2024
105. Singh, Bharat; Kashyap, Suraj; Soni, Hardik; Verma, Indersh; Ghorai, Manas K. Ring-Opening Cyclization (ROC) of Spiro-Epoxyoxindoles with Indoles/Aldehydes: An Easy Access to Polyheterocyclic spiro-Oxindoles.
(in Press)
104. Singh, Sugandha; Ghorai, Manas K; Kar, Kamal K . Exploration of cobalt(II) modification in a phenanthroline-based conjugated organic polymer towards trifunctional electrocatalysis. J. Mater. Chem. A, 2024,12, 2400-2412.
103. Shukla, Dipti; ;Sharma, Amit Kumar; Singh, Bharat; Bhattacharyya, Aditya; Ranadeep Talukdar; Ghorai, Manas K. Lewis Acid Catalyzed Domino Ring-Opening Cyclization of Azetidines with Alkynes: Synthesis of Tetrahydropyridines. Synlett 2024, 35, 2459–2464
102. Kumar, Manish; ; Singh, Bharat; Singh, Sugandha; Verma, Indresh; Kar, Kamal K.; Ghorai, Manas K. A metal-free route to substituted imidazolidines via ring-opening cyclization (ROC) of activated aziridines with N-benzylanilines: DA-COP catalyzed photo-oxidative C–H activation. Catal. Sci. Technol., 2024, 14, 6411
101. Shukla, Dipti; Kashyap, Suraj; Singh, Bharat; Sharma, Amit Kumar; Bhattacharyya, Aditya; Rahman, Noimur; Ghorai, Manas K. Lewis Acid Catalyzed SN2-Type Domino Ring-Opening Cyclization (DROC) of Aziridines with Alkynes: A Synthetic Route to 2,3-Dihydropyrroles. Synthesis 2024, 56, DOI: 10.1055/a-2415-1629
100. Goswami, Gaurav; Singh, Bharat; Wani, Imtiyaz Ahmad; Mal, Abhijit; Ghorai, Manas K. A Synthetic Route to Tetrahydro-1H-azepino[4,3,2-cd]indoles via Ring-Opening Cyclization of Activated Azetidines with 4-Bromoindole: Toward a Vasopressin V2 Receptor Antagonist. J. Org. Chem. 2024. 89, 11576-11587
99. Kashyap, Suraj; Singh, Bharat; Ghorai, Manas K. Magic Blue-Initiated SN2-Type Ring Opening of Activated Aziridines:Friedel-Crafts-Type Alkylation of Electron-Rich Arenes/Heteroarenes. J. Org. Chem. 2024. 89, 11429–11445
98. Singh, Bharat; Kashyap, Suraj; Singh, Shishir; Gupta, Sikha; Ghorai, Manas K. Catalytic Aminium Radical-Cation Salt (Magic Blue)-Initiated SN2-Type Nucleophilic Ring-Opening Transformations of Aziridines. J. Org. Chem. 2024, 89, 2247-2263.
97. Yadav, Bhoomika; Kar, Kamal K.; Ghorai, Manas K Kumar Devendra. Exploring the dielectric and conduction characteristics of iodine substituted CaCu3Ti4O12-xIx. Ceramics International (2023), 49(4), 6932-6945.
96. Singh, Sugandha; Ghorai, Manas K; Kar, Kamal K . Cobalt(ii)-bridged triphenylamine and terpyridine-based donor–acceptor coordination polymer as an efficient trifunctional electrocatalyst. Journal of Materials Chemistry A: Materials for Energy and Sustainability (2023), 11(15), 8003-8012.
95. Bharat Singh, Manish Kumar, Gaurav Goswami, Indresh Verma; and Ghorai, Manas K. Ring-Opening Cyclization (ROC) of Aziridines with Propargyl Alcohols: Synthesis of 3,4-Dihydro-2H-1,4-Oxazines. J. Org. Chem., 2023, 88, 4504-4518.
94. Imtiyaz Ahmad Wani, Sahid Sk, Abhijit Mal, Arunava Sengupta; and Ghorai, Manas K. Stereoselective Routes to Hexahydropyrroloindoles and Tetrahydropyrroloquinolines from Activated Aziridines and Electron Deficient 3H-Indoles. Org. Lett. 2022, 24, 7867-7872.
93. Amrita Saha; Karuna Mahato; Satysen Yadav;Ghorai, Manas K Application of Donor-Acceptor Cyclopropanes in Total synthesis of Natural . Wiley, 2022 3527349871, 9783527349876(Book Chapter).
92. Yadav, Bhoomika; Ghorai, Manas K.; Kar, Kamal K., Kumar Devendra and Yadav, Dharmendra Impact of defect migration on electrical and dielectric properties in molten salt synthesized CaCu3Ti4O12 and customizing the properties by compositional engineering with Mg doping. Mater. Chem. Phys. 2022, 281, 125893.
91. Yadav, Bhoomika; Sinha Prerna; Ghorai, Manas K.; Kar, Kamal K. and Kumar Devendra Exploring the electrical behavior of iodine substituted CaCu3Ti4O12-xIx by impedance and modulus spectroscopy. J. Phys. Chem. Solids 2022, 164, 110613.
90. Verma, Kapil Dev; Sinha, Prerna; Ghorai, Manas K.; Kar, Kamal K. Mesoporous electrode from human hair and bio-based gel polymer electrolyte for high-performance supercapacitor. Diam. Relat. Mater. 2022, 123, 108879
2016-2021 89. Das, Subhomoy; Goswami, Gaurav; Halder, Sandipan; Ghorai, Manas K. Domino imino-aldol-aza-Michael and imino-aldol-aza-Michael-imino-aldol reactions: Diastereoselective synthesis of highly functionalized 2,6-disubstituted piperidines. Tetrahedron Letters (2021), 93, 132285-132294. 88. Sugandha Singh, Ghorai, Manas K and Kamal K. Kar, Extraction of unburned carbon from coal fly ash. Elsevier, 2021, 000 (Book Chapter)., doi.org/10.1016/B978-0-12-817686-3.00013-X.
87. Sugandha Singh, Ghorai, Manas K and Kamal K. Kar, Fly ash reinforced epoxy composites Fly ash reinforced polyethylene composites. Elsevier, 2021, 000 (Book Chapter)., DOI:10.1016/b978-0-12-817686-3.00002-5.
86. Sugandha Singh, Ghorai, Manas K and Kamal K. Kar, , Electrochemical performance of elements derived from coal combustion fly ash for high performance Lithium-ion battery. Elsevier, 2021, 000 (Book Chapter)., DOI:10.1016/b978-0-12-817686-3.00019-0.
85. Verma, Kapil Dev; Sinha, Prerna; Banerjee, Soma; Kar, Kamal K.; Ghorai, Manas K. Characteristics of separator materials for supercapacitors. Handbook of Nanocomposite Supercapacitor Materials I. Springer Series in Materials Science, vol 300. Springer, Cham.
(2020), doi.org/10.1007/978-3-030-43009-2_11. 84. Tarannum, Saima; Chauhan, Navya; Ghorai, Manas K. Aziridines and 2H-azirines—monocyclic. Reference Module in Chemistry, Molecular Sciences and Chemical Engineering
(2020), doi.org/10.1016/B978-0-12-409547-2.14954-6. 83. Pradhan, Sajan; Chauhan, Navya; Shahi, Chandan K.; Bhattacharyya, Aditya; Ghorai, Manas K. Stereoselective synthesis of hexahydroimidazo[1,2-a]quinolines via SN2-type ring-opening hydroarylation-hydroamination cascade cyclization of activated aziridines with N-propargylanilines. Organic Letters (2020), 22, 7903-7908. doi.org/10.1021/acs.orglett.0c02801. 82. Samanta, Debabrata; Kumar, Manish; Singh, Sugandha; Verma, Parul; Kar, Kamal K.; Maji, Tapas Kumar; Ghorai, Manas K. Triphenylamine and terpyridine-zinc(II) complex based donor-acceptor soft hybrid as a visible light-driven hydrogen evolution photocatalyst. Journal of Materials Chemistry A: Materials for Energy and Sustainability (2020), DOI: 10.1039/d0ta02318c. 81. Bhattacharyya, Aditya; Das, Subhomoy; Chauhan, Navya; Biswas, Pronay K.; Ghorai, Manas K. Facile synthesis of oxime amino ethers via Lewis acid catalyzed SN2-type ring opening of activated aziridines with aryl aldehyde oximes. Synlett (2020), 31(7), 708-712. 80. Wani, Imtiyaz Ahmad; Goswami, Gaurav; Sk, Sahid; Mal, Abhijit; Sayyad, Masthanvali; Ghorai, Manas K. A synthetic route to 1,4-disubstituted tetrahydro-β-carbolines and tetrahydropyranoindoles via ring-opening/Pictet-Spengler reaction of aziridines and epoxides with indoles/aldehydes. Organic & Biomolecular Chemistry (2020), 18(2), 272-287. 79. Tarannum, Saima; Sk, Sahid; Das, Subhomoy; Wani, Imtiyaz Ahmad; Ghorai, Manas K. Stereoselective syntheses of highly functionalized imidazolidines and oxazolidines via ring-opening-cyclization of activated aziridines and epoxides with amines and aldehydes. The Journal Of Organic Chemistry (2020), 85(2), 367-379. 78. Chauhan, Navya; Pradhan, Sajan; Ghorai, Manas K. Stereospecific Synthesis of Highly Substituted Piperazines via an One-Pot Three Component Ring-Opening Cyclization from N-Activated Aziridines, Anilines, and Propargyl Carbonates. The Journal Of Organic Chemistry (2019), 84(4), 1757-1765. 77. Ghorai, Manas K; Goswami, Gaurav. The synthesis of tolterodine from activated azetidine. Indian Pat. Appl. (2019), IN 201811046497 A 20191213. 76. Ghorai, Manas K; Pradhan, Sajan. Process for the synthesis of 3-spiropiperidino indolenines. Indian Pat. Appl. (2019), IN 201811022519 A 20190705. 75. Ghorai, Manas K; Shahi, Chandan Kumar; Bhattacharyya, Aditya.; Pradhan, Sajan. Process for the synthesis of quinoxalines. Indian Pat. Appl. (2019), IN 201711016754 A 20190315. 74. Goswami, Gaurav; Chauhan, Navya; Mal, Abhijit; Das, Subhomoy; Das, Mowpriya; Ghorai, Manas K. Synthesis of 3,3-diaryl/heteroarylpropylamines via nucleophilic ring opening of activated azetidines with arenes and heteroarenes: New synthetic route to (±)tolterodine. ACS Omega (2018), 3, 17562-17572. 73. Wani, Imtiyaz Ahmad; Das, Subhomoy; Mondal, Shobhan; Ghorai, Manas K. Stereoselective construction of pyrazinoindoles and oxazinoindoles via ring-opening/Pictet-Spengler reaction of aziridines and epoxides with 3-methylindoles and carbonyls. The Journal Of Organic Chemistry (2018), 83(23), 14553-14567. 72. Pradhan, Sajan; Shahi, Chandan Kumar; Bhattacharya, Aditya; Ghorai, Manas K. Stereoselective synthesis of 3-spiropiperidino indolenines via SN2-type ring opening of activated aziridines with 1H-indoles/Pd-catalyzed spirocyclization with propargyl carbonates. Chemical Communication (2018), 54(62), 8583-8586. 71. Mal, Abhijit; Wani, Imtiyaz Ahmad; Goswami, Gaurav; Ghorai, Manas K. Synthesis of nonracemic 1,4-benzoxazines via ring opening/cyclization of activated aziridines with 2-halophenols: Formal synthesis of levofloxacin. The Journal Of Organic Chemistry (2018), 83(15), 7907-7918. 70. Bhattacharya, Aditya; Shahi, Chandan Kumar; Pradhan, Sajan; Ghorai, Manas K. Stereospecific synthesis of 1,4,5,6-tetrahydropyrimidines via domino ring-opening cyclization of activated aziridines with α-acidic isocyanides. Organic Letters (2018), 20, 2925-2928. 69. Wani, Imtiyaz Ahmad; Bhattacharya, Aditya; Sayyad, Masthanvali; Ghorai, Manas K. Temperature-modulated diastereoselective transformations of 2-vinylindoles to tetrahydrocarbazoles and tetrahydrocycloheptadiindoles. Organic & Biomolecular Chemistry (2018), 16(16), 2910-2922. 68. Saha, Amrita; Bhattacharya, Aditya; Talukdar, Ranadeep; Ghorai, Manas K. Stereospecific syntheses of enaminonitriles and β-enaminoesters via domino ring-opening cyclization (DROC) of activated cyclopropanes with pronucleophilic malononitriles. The Journal Of Organic Chemistry (2018), 83(4), 2131-2144. 67. Veeraswamy, Vadlamuri; Goswami, Gaurav; Mukherjee, Satobhisha; Ghosh, koena; Saha, Manik Lal; Sengupta. Arunava; Ghorai, Manas K. Memory of chirality concept in asymmetric intermolecular Michael addition of α-amino ester enolates to enones and nitroalkene. The Journal Of Organic Chemistry (2018), 83(3), 1106-1115. 66. Ghorai, Manas K; Sayyad, Masthanvali; Nanaji, Yerramsetti. One-pot process for the synthesis of indole and indole derivatives. Indian Pat. Appl. (2018), IN 2015DE03880 A 20180105. 65. Mal, Abhijit; Goswami, Gaurav; Wani, Imtiyaz Ahmad; Ghorai, Manas K. Synthetic route to chiral indolines via Cu(OAc)2-catalyzed ring-opening/C(sp2)-H activation of activated aziridines. Chemical Communication (2017), 53(74), 10263-10266. 64. Shahi, Chandan Kumar; Pradhan, Sajan; Bhattacharyya, Aditya; Kumar, Raushan; Ghorai, Manas K. Accessing quinoxalines by ring-opening/cyclization/detosylation/aromatization of activated aziridines with 2-bromoanilines: Synthesis of tyrphostin AG 1296. European Journal of Organic Chemistry (2017), 3487-3495. 63. Pradhan, Sajan; Shahi, Chandan Kumar; Bhattacharyya, Aditya; Chauhan, Navya; Ghorai, Manas K. Syntheses of tetrahydrobenzoazepinoindoles and dihydrobenzodiazepinoindoles via ring-opening cyclization of activated aziridines with 2-(2-bromophenyl)-1H-indoles. Organic Letters (2017), 19(13), 3438-3441. 62. Wani, Imtiyaz Ahmad; Sayyad, Masthanvali; Ghorai, Manas K. Domino ring-opening cyclization (DROC) of activated aziridines and epoxides with nitrones via dual catalysis "On water". Chemical Communication (2017), 53, 4386-4389. 61. Sayyad, Masthanvali; Wani, Imtiyaz Ahmad; Tiwari, Deo Prakash; Ghorai, Manas K. Synthetic Route to Isomeric Imidazoindoles via Regioselective Ring-Opening of Activated Aziridines Followed by Copper Catalysis C-N Cyclization. European Journal of Organic Chemistry (2017), 2369-2378. 60. Sayyad, Masthanvali; Wani, Imtiyaz Ahmad; Babu, Raja; Nanaji. Yerramsetti; Ghorai, Manas K. A synthetic route to chiral 1,4-disubstituted tetrahydro-β-carbolines via domino ring-opening cyclization of activated aziridines with 2-vinylindoles. The Journal of Organic Chemistry (2017), 82, 2364-2374. 59. Pradhan, Sajan; Shahi, Chandan Kumar; Bhattacharyya, Aditya; Chauhan, Navya; Ghorai, Manas K. Divergent and stereospecific route to five to eight memebered 1,3- and 1,4-di-azaheterocycles via ring-opening cyclization of activated aziridines with aryl amine. ChemistrySelect (2017), 2, 550-556. 58. Shahi, Chandan Kumar; Bhattacharyya, Aditya; Nanaji, Yerramsetti; Ghorai, Manas K. A stereoselective route to tetrahydrobenzoxazepines and tetrahydrobenzodiazepines via ring-opening and aza-Michael addition of activated aziridines with 2-hydroxyphenyl and 2-aminophenyl acrylates. The Journal of Organic Chemistry (2017), 82, 37-47. (Highlighted in cover page) 57. Mal, Abhijit; Sayyad, Masthanvali; Wani, Imtiyaz Ahmad; Ghorai, Manas K. Domino ring-opening cyclization of activated aziridines with indoles: Synthesis of chiral hexahydropyrroloindoles. The Journal of Organic Chemistry (2017), 82, 4-11. (Featured Article; Highlighted in cover page) 56. Bhattacharyya, Aditya; Kavitha,C.V; Ghorai, Manas K. Stereospecific synthesis of 2-iminothiazolidines via domino ring-opening cyclization of activated aziridines with aryl- and alkyl isothiocyanates. The Journal of Organic Chemistry (2016), 81, 6433-6443. 55. Sayyad, Masthanvali; Mal, Abhijit; Wani, Imtiyaz Ahmad; Ghorai, Manas K. A synthetic route to chiral tetrahydropyrroloindoles via ring opening of activated aziridines with 2-bromoindoles followed by copper-catalyzed C-N cyclization. The Journal of Organic Chemistry (2016), 81, 6424-6432. 54. Talukdar, Ranadeep; Saha, Amrita; Ghorai, Manas K. Domino-Ring Opening-Cyclization (DROC) of donor-acceptor (DA) cyclopropanes. Israel Journal of Chemistry (2016), 56, 445-453.
53. Ghorai, Manas K.; Bhattacharyya, Aditya;
Das, Subhomoy; Chauhan, Navya. Ring expansions of activated aziridines and azetidines.
Topics in Heterocyclic Chemistry (2016), 41, 49-142.
52.
Talukdar, Ranadeep; Saha, Amrita; Tiwari, Deo P; Ghorai, Manas K. Ring opening of DA-cyclopropanes with electron rich arene/heteroarene: Synthesis of 2-(2,2-diarylethyl)malonates.
Tetrahedron (2016), 72, 613-624.
2011-2015
51. Sayyad, Masthanvali;
Nanaji, Yerramsetti; Ghorai, Manas K. A synthetic route to 2-alkyl indoles via thiophenol-mediated ring-opening of N-tosylaziridines followed by copper powder-mediated C-N cyclization/aromatization.
The Journal of Organic Chemistry (2015), 80, 12659-12667.
50. Ghorai, Manas K.;
Halder, Sandipan; Das, Subhomoy. Domino Michael-Michael and Aldol-Aldol Reactions: Diastereoselective synthesis of functionalized cyclohexanone derivatives containing quaternary carbon center.
The Journal of Organic Chemistry (2015), 80, 9700-9712. (Article) 49. Samanta, Sauvik; Mal, Abhijit; Halder, Sandipan; Ghorai, Manas K. Racemization-free synthesis of morpholinone derivatives from α-amino acids. Synthesis (2015), 47, 3776-3782.
48. Ghorai, Manas K.;
Shahi, Chandan Kumar; Bhattacharyya, Aditya; Sayyad, Masthanvali; Mal, Abhijit; Wani, Imtiyaz Ahmad; Chauhan, Navya. Syntheses of tetrahydrobenzodiazepines via SN2-type ring-opening of activated aziridines with 2-bromobenzylamine followed by Cu(I)-catalyzed C–N bond formation.
Asian Journal of Organic Chemistry (2015), 4, 1103-1111.
47. Ghorai, Manas K.;
Das, Subhomoy; Das, Kalpataru; Kumar, Amit. Stereoselective synthesis of activated 2-arylazetidines via imino-aldol reaction.
Organic & Biomolecular Chemistry (2015), 13, 9042-9049. 46. Banerjee, Soma; Kar, Kamal K.; Ghorai, Manas K.; Das, Subhomoy. Synthesis of polyether ether ketone membrane with pendent phosphonic acid group and determination of proton conductivity and thermal stability. High Performance Polymers (2015), 27(4), 402-411.
45. Ghorai, Manas K.;
Sayyad, Masthanvali; Nanaji, Yerramsetti; Jana, Sourita. A synthetic route to chiral dihydrobenzothiazines via ring-opening of activated aziridines with 2-halothiophenols/Cu-powder mediated C−N cyclization.
Chemistry - An Asian Journal (2015), 10, 1480-1489.
44. Samanta, Sauvik;
Bhattacharyya, Aditya; Das, Subhomoy; Ghorai, Manas K. Organocatalytic domino approaches for enantioselective formation of six membered carbacycles. Current Organic Chemistry (2014), 18, 2842-2856.
43. Talukdar, Ranadeep; Tiwari, Deo P; Saha, Amrita; Ghorai, Manas K. Diastereoselective synthesis of functionalized tetrahydrocarbazoles via a domino-ring opening–cyclization of donor–acceptor cyclopropanes with substituted 2-vinylindoles. Organic Letters (2014), 16(15), 3954-3957.
42. Ghorai, Manas K.;
Sahoo, Ashis K; Bhattacharyya, Aditya. Ring-opening of aziridines/Cu-catalyzed C-N / C-C bond formation: Syntheses of imidazo-, oxa- and thiazepine ring systems.
The Journal of Organic Chemistry (2014), 79, 6468-6479.
41. Ghorai, Manas K.;
Talukdar, Ranadeep; Tiwari, Deo P. A route to highly functionalized β-enaminoesters via a domino ring-opening cyclization/decarboxylative tautomerization sequence of donor–acceptor cyclopropanes with substituted malononitriles.
Organic Letters (2014), 16, 2204-2207. 40. Ghorai, Manas K.; Halder, Sandipan; Samanta, Sauvik. Carboamination and alkylative cyclization with C-N bond formation in stereoselective syntheses. Stereoselective Synthesis of Drug and Natural Products (2013), 2, 1211-1250. 39. Ghorai, Manas K.; Tiwari, Deo P.; Bhattacharyya, Aditya. Asymmetric hydroamination and reductive amination in total sythesis. Stereoselective Synthesis of Drug and Natural Products (2013), 2, 1173-1210.
38. Ghorai, Manas K.;
Samanta, Sauvik; Das, Subhomoy. Synthesis of 3,5-disubstituted cyclohex-2-en-1-one via a five-step domino reaction catalyzed by secondary amines: Formation of (E)-α,β-unsaturated methyl ketones.
Asian Journal of Organic Chemistry (2013), 2, 1026-1030.
37. Ghorai, Manas K.;
Talukdar, Ranadeep; Tiwari, Deo P. An efficient synthetic route to carbocyclic enaminonitriles via Lewis acid catalyzed Domino-Ring-Opening-Cyclization (DROC) of donor-acceptor cyclopropanes with malononitrile.
Chemical Communication (2013), 49, 8205-8207.
36. Ghorai, Manas K.;
Tiwari, Deo P.; Jain, Nikita. Lewis acid catalyzed ring opening of activated aziridines with electron rich arenes/heteroarenes.
The Journal of Organic Chemistry (2013), 78, 7121-7130. (Article)
35. Ghorai, Manas K.;
Nanaji, Yerramsetti. A synthetic route to chiral indolines via ring opening/C−N cyclization of activated 2-haloaryl-aziridines. The Journal of Organic Chemistry (2013), 78, 3867-3878. (Article)
34. Ghorai, Manas K.; Tiwari, Deo P. Enantioselective synthesis of 4,5-dihydropyrroles via Domino Ring Opening Cyclization (DROC) of N-activated aziridines with malononitrile.
The Journal of Organic Chemistry (2013), 78, 2617-2625. (Article)
33. Ghorai, Manas K.;
Ghosh, Koena; Yadav, Ashok K.; Nanaji, Yerramsetti.; Halder, Sandipan; Sayyad, Masthanvali. Memory of chirality (MOC) concept in imino-aldol reaction: Enantioselective synthesis of α,β-diamino esters and aziridines.
The Journal of Organic Chemistry (2013), 78, 2311-2326. (Article) 32. Ghorai, Manas K.; Halder, Sandipan. Process for the synthesis of highly functionalized racemic and non-racemic piperidines. Indian Pat. Appl. (2012), IN 2010DE02403 A 20120413. 31. Ghorai, Manas K.; Tiwari, Deo P. Process for preparation of chiral γ-lactams. Indian Pat. Appl. (2012), IN 2010DE01870 A 20120224.
30. Ghorai, Manas K.;
Shukla, Dipti; Bhattacharyya, Aditya. Syntheses of chiral β- and γ-amino ethers, morpholines and their homologues via nucleophilic ring opening of chiral activated aziridines and azetidines.
The Journal of Organic Chemistry (2012), 77, 3750-3753. (Article)
29. Ghorai, Manas K.;
Halder, Sandipan; Samanta, Sauvik. Regioselective addition of 1,3-dicarbonyl dianions to carbonyl compounds: one pot lactonization and ketalization of δ-hydroxyl-β-keto esters to protected pyrone derivatives.
Australian Journal of Chemistry (2012), 65, 1262-1270.
28. Ghorai, Manas K.;
Tiwari, Deo P.; Kumar, Amit; Das, Kalpataru. SN2-type ring opening of substituted-N-tosylaziridines with zinc (II) halides: Control of racemization by quaternary ammonium salt.
Journal of Chemical Sciences (2011), 123, 951-961.
27. Ghorai, Manas K.;
Sahoo, Ashis k.; Kumar, Sarvesh. Synthetic route to chiral tetrahydroquinoxalines via ring-opening of activated aziridines.
Organic Letters (2011), 13, 5972-5975.
26. Ghorai, Manas K.;
Nanaji, Yerramsetti; Yadav, Ashok K. Ring opening/C-N cyclization of activated aziridines with carbon nucleophiles: Highly diastereo- and enantioselective synthesis of tetrahydroquinolines.
Organic Letters (2011), 13, 4256-4269.
2005-2010
25. Ghorai, Manas K.;
Halder, Sandipan; Das, Raj Kumar. Domino imino-Aldol-aza-Michael reaction: One pot diastereo- and enantioselective synthesis of piperdines.
The Journal of Organic Chemistry (2010), 75, 7061-7072. (featured article)
24. Ghorai, Manas K.;
Tiwari, Deo P. Lewis acid catalyzed highly stereoselective domino-ring-opening cyclzation of activated aziridines with enolates: Synthesis of functionalized chiral γ-lactams.
The Journal of Organic Chemistry (2010), 75, 6173-6181.
23. Ghorai, Manas K.;
Kumar, Amit; Tiwari, Deo P. BF3.OEt2-mediated
highly regioselective SN2-type ring-opening of N-activated aziridines and N-activated
azetidines by tetraalkylammonium halides.
The Journal of Organic Chemistry (2010), 75, 137-151. 22 . Ghorai, Manas K.;
Shukla, Dipti; Das, Kalpataru.
Enantioselective syntheses of morpholines and their homologues via an SN2-type
ring opening of aziridine and azetidine with haloalcohols.
The Journal of Organic Chemistry (2009), 74, 7013-7022.
21. Ghorai, Manas K.;
Das, Kalpataru; Kumar, Amit. An efficient
synthetic route to substituted tetrahydropyrimidines by Cu(OTf)2-mediated
nucleophilic ring-opening followed by the [4+2] cycloaddition of
N-tosylazetidines with nitriles.
20.
Ghorai, Manas K.; Ghosh, Koena; Yadav, Ashok. K.
Enantioselective synthesis of a,β-diamino ester derivatives: Memory of chirality in imino-Aldol reactions.
Tetrahedron Letters (2009), 50, 476-479.
19. Chen, Jingyang; Ghorai, Manas K.; Kenney, Grace; Stubbe,
JoAnne. Mechanistic studies on
bleomycin-mediated DNA damage: multiple binding modes can result in
double-stranded DNA cleavage.
Nucleic Acids Research (2008), 36(11), 3781-3790.
18. Ghorai,
Manas K.; Kumar, Amit; Das, Kalpataru. Lewis acid-mediated unprecedented
ring-opening rearrangement of 2-aryl-N-tosylazetidines to enantiopure
(E)-allylamines. Organic Letters (2007), 9(26), 5441-5444.
17. Ghorai,
Manas K.; Das, Kalpataru; Shukla, Dipti. Lewis
acid-mediated highly regioselective SN2-type ring-opening of
2-aryl-N-tosylazetidines and aziridines by alcohols. The Journal of Organic Chemistry (2007), 72(15), 5859-5862. 16. Ghorai, Manas K.; Das,
Kalpataru; Kumar, Amit. Lewis acid mediated SN2-type nucleophilic ring
opening followed by [4+2] cycloaddition of N-tosylazetidines with aldehydes and
ketones: Synthesis of chiral 1,3-oxazinanes and 1,3-amino alcohols. Tetrahedron Letters (2007), 48(25), 4373-4377. 15. Ghorai, Manas K.; Kumar,
Amit; Halder, Sandipan. Regioselective addition of 1,3-dicarbonyl dianion
to N-sulfonyl aldimines: An expedient route to N-sulfonyl piperidines and
N-sulfonyl
azetidines. Tetrahedron (2007), 63(22), 4779-4787. 14. Ghorai, Manas K.; Ghosh,
Koena. Lewis acid mediated nucleophilic ring opening followed by cycloaddition of 2-aryl-N-tosylaziridines with carbonyl compounds: Further
support towards an SN2-type mechanism. Tetrahedron Letters (2007),
48(18), 3191-3195. 13. Ghorai, Manas K.; Das,
Kalpataru; Kumar, Amit. A convenient synthetic route to enantiopure
N-tosylazetidines from α-amino acids. Tetrahedron Letters (2007), 48(14), 2471-2475. 12. Ghorai, Manas K.; Ghosh,
Koena; Das, Kalpataru. Copper(II) triflate promoted cycloaddition of
α-alkyl or aryl substituted N-tosylaziridines with nitriles: A highly efficient
synthesis of substituted imidazolines. Tetrahedron Letters
(2006),
47(30), 5399-5403.
11. Ghorai,
Manas K.; Das, Kalpataru; Kumar, Amit; Das, Animesh. A
convenient synthetic route to 2-aryl-N-tosylazetidines and their ZnX2 (X=I, OTf)
mediated regioselective nucleophilic ring opening reactions: Synthesis of γ-iodoamines and tetrahydropyrimidines. Tetrahedron Letters (2006), 47(30), 5393-5397. 10. Ghorai, Manas K.; Das,
Kalpataru; Kumar, Amit; Ghosh, Koena. An efficient route to regioselective
opening of N-tosylaziridines with zinc(II) halides. Tetrahedron Letters
(2005), 46(23), 4103-4106.
Previous
Publications 9. Schmittel, Michael; Ghorai,
Manas K. Reactivity patterns of radical ions - a unifying picture of
radical-anion and radical-cation transformations. Electron Transfer in
Chemistry (2001), 2, 5-54. 8. Schmittel, Michael; Ghorai,
Manas K. Aldolases as Leitmotiv - A nonenzymatic domino aldol reaction
triggered by zinc bisenolate and polyenolate (ate) complexes. Synlett (2001), 12, 1992-1994. 7. Schmittel, Michael; Ghorai,
Manas K.; Haeuseler, Andreas; Henn, Wolfgang; Koy, Thomas; Sollner, Rolf. Stereoselective synthesis of tetrahydropyran-2,4-diols by a single domino
aldol-aldol hemiacetal one-pot reaction. European The Journal of Organic Chemistry (1999), 9, 2007-2010. 6. Pandey, Ganesh; Ghorai,
Manas K.; Hajra, Saumen. The intermolecular
β-coupling of cyclic enones with activated alkenes and alkynes: unexpected β-alkoxy elimination from a 4-alkoxy-2-alkyl-1-hydroxy-cyclopentenyl radical. Tetrahedron Letters (1998), 39(45), 8341-8344. 5. Pandey, Ganesh; Ghorai,
Manas K.; Hajra, Saumen. A new strategy for the construction of carbocycles
and oxacycles by intramolecular reductive coupling of α,β-unsaturated esters. Tetrahedron Letters (1998), 39(13), 1831-1834.
4. Pandey,
Ganesh; Hajra, Saumen; Ghorai, Manas K.; Kumar, K. Ravi. Designing
photosystems for harvesting photons into electrons by sequential
electron-transfer processes: Reversing the reactivity profiles of α,β-unsaturated ketones as carbon radical precursor by one electron reductive β-activation. Journal of the American Chemical Society (1997), 119(38), 8777-8787. 3. Pandey, Ganesh; Hajra,
Saumen; Ghorai, Manas K.; Kumar, K. Ravi. Visible light initiated
photosensitized electron transfer cyclizations of aldehydes and ketones to
tethered α,β-unsaturated esters: Stereoselective synthesis of optically pure C-furanosides. The Journal of Organic Chemistry (1997), 62(17), 5966-5973. 2. Pandey, Ganesh; Ghorai,
Manas K.; Hajra, Saumen. Design of a photosystem to harvest visible-light
into electrons: Photosensitized one-electron redox reactions in organic
synthesis. Pure and Applied Chemistry (1996), 68(3), 653-658.
1. Pandey,
Ganesh; Hajra, Saumen; Ghorai, Manas K. Visible-light initiated photosensitized electron transfer (PET) reductive β-Activation of α,β-unsaturated ketones for radical cyclization: A new concept in promoting radical reactions. Tetrahedron Letters (1994), 35(42), 7837-7840. 
