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1

Catalyst-Free One-Pot Access to Pyrazoles and Disulfide-Tethered Pyrazoles via Deamidative Heteroannulation of β-Ketodithioesters with Semicarbazide Hydrochloride in Water

SINGH, MAYA, Koley, Suvajit, Panja, Sumit Kumar, Soni, Sonam

Journal:

Advanced Synthesis & Catalysis

Année:

2018

Langue:

english

Fichier:

PDF, 1.92 MB

english, 2018

2

Diversity oriented catalyst-free and solvent-free one-pot MCR at room temperature: rapid and regioselective convergent approach to highly functionalized dihydro-4H-thiopyrans

Koley, Suvajit, Chowdhury, Sushobhan, Chanda, Tanmoy, Ramulu, B. Janaki, Singh, Maya Shankar

Journal:

Année:

2013

Langue:

english

Fichier:

PDF, 2.65 MB

english, 2013

3

Y(OTf)3 catalyzed substitution dependent oxidative C(sp3)–C(sp3) cleavage and regioselective dehydration of β-allyl-β-hydroxydithioesters: alternate route to α,β-unsaturated ketones and functionalized dienes

Chowdhury, Sushobhan, Chanda, Tanmoy, Nandi, Ganesh Chandra, Koley, Suvajit, Janaki Ramulu, B., Pandey, S.K., Singh, Maya Shankar

Journal:

Année:

2013

Langue:

english

Fichier:

PDF, 657 KB

english, 2013

4

Regioselective quadruple domino aldolization/aldol condensation/Michael/SNAr-cyclization: construction of hexacyclic indeno-fused C-nor-D-homo-steroid frameworks

Chanda, Tanmoy, Chowdhury, Sushobhan, Ramulu, B. Janaki, Koley, Suvajit, Jones, Raymond C.F., Singh, Maya Shankar

Journal:

Année:

2014

Langue:

english

Fichier:

PDF, 892 KB

english, 2014

5

Indium(0)-Mediated C sp 3-S/O Cross-Coupling Approach Towards the Regioselective Alkylation of α-Enolic Esters/Dithioesters: A Mechanistic Insight

Chowdhury, Sushobhan, Chanda, Tanmoy, Gupta, Ashutosh, Koley, Suvajit, Ramulu, B. Janaki, Jones, Raymond C. F., Singh, Maya Shankar

Journal:

European Journal of Organic Chemistry

Année:

2014

Langue:

english

Fichier:

PDF, 676 KB

english, 2014

6

Regioselective dehydrative intramolecular heteroannulation of β-allyl-β-hydroxy dithioesters: facile and straightforward entry to 2H-thiopyrans

Chowdhury, Sushobhan, Chanda, Tanmoy, Koley, Suvajit, Ramulu, B. Janaki, Raghuvanshi, Keshav, Singh, Maya Shankar

Journal:

Année:

2014

Langue:

english

Fichier:

PDF, 592 KB

english, 2014

7

Iron-Promoted Domino Annulation of α-Enolic Dithioesters with Ninhydrin under Solvent-Free Conditions: Chemoselective Direct Access to Indeno[1,2- b ]thiophenes

Koley, Suvajit, Chowdhury, Sushobhan, Chanda, Tanmoy, Ramulu, B. Janaki, Nandi, Ganesh Chandra, Singh, Maya Shankar

Journal:

European Journal of Organic Chemistry

Année:

2014

Langue:

english

Fichier:

PDF, 351 KB

english, 2014

8

Palladium Catalyzed Oxidative Coupling of α-Enolic Dithioesters: A New Entry to 3,4,5-Trisubstituted 1,2-Dithioles via a Double Activation Strategy

Chowdhury, Sushobhan, Chanda, Tanmoy, Koley, Suvajit, Ramulu, B. Janaki, Jones, Raymond C. F., Singh, Maya Shankar

Journal:

Organic Letters

Année:

2013

Langue:

english

Fichier:

PDF, 809 KB

english, 2013

9

Regioselective Synthesis of Dihydrothiophene and Thiopyran Frameworks via Catalyst-Controlled Intramolecular C γ /C δ –S Fusion of α-Allyl-β′-oxodithioesters

Chowdhury, Sushobhan, Chanda, Tanmoy, Koley, Suvajit, Anand, Namrata, Singh, Maya Shankar

Journal:

Organic Letters

Année:

2014

Langue:

english

Fichier:

PDF, 898 KB

english, 2014

10

Lewis acid promoted construction of chromen-4-one and isoflavone scaffolds via regio- and chemoselective domino Friedel–Crafts acylation/Allan–Robinson reaction

Chanda, Tanmoy, Chowdhury, Sushobhan, Koley, Suvajit, Anand, Namrata, Singh, Maya Shankar

Journal:

Organic & Biomolecular Chemistry

Année:

2014

Langue:

english

Fichier:

PDF, 1.26 MB

english, 2014

11

Lewis acid mediated three-component one-flask regioselective synthesis of densely functionalized 4-amino-1,2-dihydropyridines via cascade Knoevenagel/Michael/cyclization sequence

Koley, Suvajit, Chowdhury, Sushobhan, Chanda, Tanmoy, Janaki Ramulu, B., Samai, Subhasis, Motisa, Lerato, Singh, Maya Shankar

Journal:

Année:

2015

Langue:

english

Fichier:

PDF, 6.15 MB

english, 2015

12

CuSO 4 – d -glucose, an inexpensive and eco-efficient catalytic system: direct access to diverse quinolines through modified Friedländer approach involving S N Ar/reduction/annulation cascade in one pot

Anand, Namrata, Chanda, Tanmoy, Koley, Suvajit, Chowdhury, Sushobhan, Singh, Maya Shankar

Journal:

Année:

2015

Langue:

english

Fichier:

PDF, 999 KB

english, 2015

13

Ligand- and Base-Free Cu II -Mediated Selective S -Arylation of α-Enolic Dithioesters by Chan-Lam Coupling at Room Temperature

Koley, Suvajit, Chowdhury, Sushobhan, Chanda, Tanmoy, Ramulu, B. Janaki, Anand, Namrata, Singh, Maya Shankar

Journal:

European Journal of Organic Chemistry

Année:

2015

Langue:

english

Fichier:

PDF, 1.18 MB

english, 2015

14

Synthesis of 3-hydroxyindanones via potassium salt of amino acid catalyzed regioselective intramolecular aldolization of ortho-diacylbenzenes

Chanda, Tanmoy, Chowdhury, Sushobhan, Anand, Namrata, Koley, Suvajit, Gupta, Ashutosh, Singh, Maya Shankar

Journal:

Tetrahedron Letters

Année:

2015

Langue:

english

Fichier:

PDF, 1.00 MB

english, 2015

15

Metal-Free Reagent Dependent SS and CC Homocoupling of α-Enolic Dithioesters at Room Temperature: Direct Access to Fully Substituted Symmetrical Thiophenes via Chemoselective Paal-Knorr Approach

Ramulu, B. Janaki, Nagaraju, Anugula, Chowdhury, Sushobhan, Koley, Suvajit, Singh, Maya Shankar

Journal:

Advanced Synthesis & Catalysis

Année:

2015

Langue:

english

Fichier:

PDF, 1.46 MB

english, 2015

16

Organoindium mediated Csp3–S cross-coupling/migratory allenylation/thioannulation cascade: expedient synthesis of highly substituted thiophene frameworks

Chowdhury, Sushobhan, Chanda, Tanmoy, Koley, Suvajit, Ramulu, B. Janaki, Jones, Raymond C.F., Singh, Maya Shankar

Journal:

Année:

2015

Langue:

english

Fichier:

PDF, 873 KB

english, 2015

17

Copper-catalyzed site-selective S–S and C–C homocoupling of α-enolic dithioesters: straightforward and efficient access to 1,2-dithiols

Ramulu, B. Janaki, Nagaraju, Anugula, Chowdhury, Sushobhan, Koley, Suvajit, Singh, Maya Shankar

Journal:

Tetrahedron Letters

Année:

2015

Langue:

english

Fichier:

PDF, 686 KB

english, 2015

18

Iodine-Mediated Annulation of S-Allylated α-Enolic Dithioesters: Rapid Access to 2-Alkylidene-1,3-dithiolanes at Room Temperature

Ramulu, B., Chowdhury, Sushobhan, Nagaraju, Anugula, Koley, Suvajit, Anand, Namrata, Singh, Maya

Journal:

Année:

2015

Langue:

english

Fichier:

PDF, 1.08 MB

english, 2015

19

Thionyl chloride mediated dehydroxylation of 3-hydroxyindanones to indenones

Chanda, Tanmoy, Chowdhury, Sushobhan, Koley, Suvajit, Anand, Namrata, Singh, Maya Shankar

Journal:

Tetrahedron Letters

Année:

2015

Langue:

english

Fichier:

PDF, 660 KB

english, 2015

20

Metal-free Brønsted acid mediated synthesis of fully substituted thiophenes via chemo- and regioselective intramolecular cyclization of α,α′-bis(β-oxodithioesters) at room temperature

SINGH, MAYA SHANKAR, Ramulu, B. Janaki, Koley, Suvajit

Journal:

Organic & Biomolecular Chemistry

Année:

2015

Langue:

english

Fichier:

PDF, 1.54 MB

english, 2015

21

Metal-free aerobic one-pot synthesis of substituted/annulated quinolines from alcohols via indirect Friedländer annulation

Anand, Namrata, Koley, Suvajit, Ramulu, B. Janaki, Singh, Maya Shankar

Journal:

Organic & Biomolecular Chemistry

Année:

2015

Langue:

english

Fichier:

PDF, 1.40 MB

english, 2015

22

ChemInform Abstract: Y(OTf) 3 Catalyzed Substitution Dependent Oxidative C(sp 3 )-C(sp 3 ) Cleavage and Regioselective Dehydration of β-Allyl-β-hydroxydithioesters: Alternate Route to α,β-Unsaturated Ketones and Functionalized Dienes.

Chowdhury, Sushobhan, Chanda, Tanmoy, Nandi, Ganesh Chandra, Koley, Suvajit, Ramulu, B. Janaki, Pandey, S. K., Singh, Maya Shankar

Journal:

Année:

2014

Langue:

english

Fichier:

PDF, 31 KB

english, 2014

23

ChemInform Abstract: Synthesis of 3-Hydroxyindanones via Potassium Salt of Amino Acid Catalyzed Regioselective Intramolecular Aldolization of ortho-Diacylbenzenes.

Chanda, Tanmoy, Chowdhury, Sushobhan, Anand, Namrata, Koley, Suvajit, Gupta, Ashutosh, Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 24 KB

2015

24

ChemInform Abstract: Metal-Free Reagent Dependent S-S and C-C Homocoupling of α-Enolic Dithioesters at Room Temperature: Direct Access to Fully Substituted Symmetrical Thiophenes via Chemoselective Paal-Knorr Approach.

Ramulu, B. Janaki, Nagaraju, Anugula, Chowdhury, Sushobhan, Koley, Suvajit, Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 28 KB

2015

25

ChemInform Abstract: Iodine-Mediated Annulation of S-Allylated α-Enolic Dithioesters: Rapid Access to 2-Alkylidene-1,3-dithiolanes at Room Temperature.

Ramulu, B. Janaki, Chowdhury, Sushobhan, Nagaraju, Anugula, Koley, Suvajit, Anand, Namrata, Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 29 KB

2015

26

ChemInform Abstract: Iron-Promoted Domino Annulation of α-Enolic Dithioesters with Ninhydrin under Solvent-Free Conditions: Chemoselective Direct Access to Indeno[1,2-b]thiophenes.

Koley, Suvajit, Chowdhury, Sushobhan, Chanda, Tanmoy, Ramulu, B. Janaki, Nandi, Ganesh Chandra, Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 24 KB

2015

27

ChemInform Abstract: Organoindium Mediated Csp 3 -S Cross-Coupling/Migratory Allenylation/Thioannulation Cascade: Expedient Synthesis of Highly Substituted Thiophene Frameworks.

Chowdhury, Sushobhan, Chanda, Tanmoy, Koley, Suvajit, Ramulu, B. Janaki, Jones, Raymond C. F., Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 21 KB

2015

28

Acid-Controlled Chemodivergent Synthesis of Three Differently Substituted Quinolines via Site Selective Coupling of ortho - Aminoaryl Ketones with α-Enolic Dithioesters

Koley, Suvajit, Chanda, Tanmoy, Ramulu, B. Janaki, Chowdhury, Sushobhan, Singh, Maya Shankar

Journal:

Advanced Synthesis & Catalysis

Année:

2016

Langue:

english

Fichier:

PDF, 1.26 MB

english, 2016

29

ChemInform Abstract: Lewis Acid Promoted Construction of Chromen-4-one and Isoflavone Scaffolds via Regio- and Chemoselective Domino Friedel-Crafts Acylation/Allan-Robinson Reaction.

Chanda, Tanmoy, Chowdhury, Sushobhan, Koley, Suvajit, Anand, Namrata, Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 26 KB

2015

30

ChemInform Abstract: Regioselective Dehydrative Intramolecular Heteroannulation of β-Allyl-β-hydroxydithioesters: Facile and Straightforward Entry to 2H-Thiopyrans.

Chowdhury, Sushobhan, Chanda, Tanmoy, Koley, Suvajit, Ramulu, B. Janaki, Raghuvanshi, Keshav, Singh, Maya Shankar

Journal:

Année:

2014

Fichier:

PDF, 31 KB

2014

31

ChemInform Abstract: Regioselective Quadruple Domino Aldolization/Aldol Condensation/Michael/S N Ar-Cyclization: Construction of Hexacyclic Indeno-Fused C-nor-D-homo-Steroid Frameworks.

Chanda, Tanmoy, Chowdhury, Sushobhan, Ramulu, B. Janaki, Koley, Suvajit, Jones, Raymond C. F., Singh, Maya Shankar

Journal:

Année:

2014

Fichier:

PDF, 27 KB

2014

32

ChemInform Abstract: Ligand- and Base-Free Cu II -Mediated Selective S-Arylation of α-Enolic Dithioesters by Chan-Lam Coupling at Room Temperature.

Koley, Suvajit, Chowdhury, Sushobhan, Chanda, Tanmoy, Ramulu, B. Janaki, Anand, Namrata, Singh, Maya Shankar

Journal:

Année:

2015

Langue:

english

Fichier:

PDF, 25 KB

english, 2015

33

ChemInform Abstract: CuSO 4 -D-Glucose, an Inexpensive and Eco-Efficient Catalytic System: Direct Access to Diverse Quinolines Through Modified Friedlaender Approach Involving S N Ar/Reduction/Annulation Cascade in One Pot.

Anand, Namrata, Chanda, Tanmoy, Koley, Suvajit, Chowdhury, Sushobhan, Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 25 KB

2015

34

ChemInform Abstract: Copper-Catalyzed Site-Selective S-S and C-C Homocoupling of α-Enolic Dithioesters: Straightforward and Efficient Access to 1,2-Dithiols.

Ramulu, B. Janaki, Nagaraju, Anugula, Chowdhury, Sushobhan, Koley, Suvajit, Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 24 KB

2015

35

ChemInform Abstract: Metal-Free Broensted Acid Mediated Synthesis of Fully Substituted Thiophenes via Chemo- and Regioselective Intramolecular Cyclization of α,α′-Bis(β-oxodithioesters) at Room Temperature.

Ramulu, B. Janaki, Koley, Suvajit, Singh, Maya Shankar

Journal:

Année:

2016

Fichier:

PDF, 31 KB

2016

36

ChemInform Abstract: Thionyl Chloride Mediated Dehydroxylation of 3-Hydroxyindanones to Indenones.

Chanda, Tanmoy, Chowdhury, Sushobhan, Koley, Suvajit, Anand, Namrata, Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 84 KB

2015

37

ChemInform Abstract: Progress in 1,3-Dipolar Cycloadditions in the Recent Decade: An Update to Strategic Development Towards the Arsenal of Organic Synthesis

Singh, Maya Shankar, Chowdhury, Sushobhan, Koley, Suvajit

Journal:

Année:

2016

Fichier:

PDF, 16 KB

2016

38

ChemInform Abstract: Metal-Free Aerobic One-Pot Synthesis of Substituted/Annulated Quinolines from Alcohols via Indirect Friedlaender Annulation.

Anand, Namrata, Koley, Suvajit, Ramulu, B. Janaki, Singh, Maya Shankar

Journal:

Année:

2016

Fichier:

PDF, 23 KB

2016

39

ChemInform Abstract: Diversity Oriented Catalyst-Free and Solvent-Free One-Pot MCR at Room Temperature: Rapid and Regioselective Convergent Approach to Highly Functionalized Dihydro-4H-thiopyrans.

Koley, Suvajit, Chowdhury, Sushobhan, Chanda, Tanmoy, Ramulu, B. Janaki, Singh, Maya Shankar

Journal:

Année:

2014

Fichier:

PDF, 30 KB

2014

40

ChemInform Abstract: Palladium Catalyzed Oxidative Coupling of α-Enolic Dithioesters: A New Entry to 3,4,5-Trisubstituted 1,2-Dithioles via a Double Activation Strategy.

Chowdhury, Sushobhan, Chanda, Tanmoy, Koley, Suvajit, Ramulu, B. Janaki, Jones, Raymond C. F., Singh, Maya Shankar

Journal:

Année:

2014

Fichier:

PDF, 29 KB

2014

41

ChemInform Abstract: Regioselective Synthesis of Dihydrothiophene and Thiopyran Frameworks via Catalyst-Controlled Intramolecular C γ /C δ -S Fusion of α-Allyl-β′-oxodithioesters.

Chowdhury, Sushobhan, Chanda, Tanmoy, Koley, Suvajit, Anand, Namrata, Singh, Maya Shankar

Journal:

Année:

2015

Fichier:

PDF, 32 KB

2015

42

ChemInform Abstract: In/I 2 Mediated Functional Group Transformation: A Direct Approach Toward the Selective Conversion of Dithioester to Ester.

Chowdhury, Sushobhan, Koley, Suvajit, Chanda, Tanmoy, Singh, Maya Shankar

Journal:

Année:

2016

Fichier:

PDF, 25 KB

2016

43

Advances of azide-alkyne cycloaddition-click chemistry over the recent decade

Singh, Maya Shankar, Chowdhury, Sushobhan, Koley, Suvajit

Journal:

Année:

2016

Langue:

english

Fichier:

PDF, 2.27 MB

english, 2016

44

Chemo- and regio-selective synthesis of hexacyclic indeno-fused coumarins via domino Diels–Alder dimerization/Baeyer–Villiger oxidation

Chanda, Tanmoy, Chowdhury, Sushobhan, Koley, Suvajit, Singh, Maya Shankar

Journal:

Année:

2016

Langue:

english

Fichier:

PDF, 709 KB

english, 2016

45

ChemInform Abstract: Advances of Azide-Alkyne Cycloaddition-Click Chemistry over the Recent Decade

Singh, Maya Shankar, Chowdhury, Sushobhan, Koley, Suvajit

Journal:

Année:

2016

Fichier:

PDF, 16 KB

2016

46

Switching Selectivity of alpha-Enolic dithioesters: One Pot Access to Functionalized 1,2- and 1,3-Dithioles

Koley, Suvajit, Chanda, Tanmoy, Samai, Subhasis, Singh, Maya Shankar

Journal:

Journal of Organic Chemistry

Année:

2016

Langue:

english

Fichier:

PDF, 1.44 MB

english, 2016

47

Dithioester-enabled chemodivergent synthesis of acids, amides and isothiazoles via C C bond cleavage and C O/C N/C S bond formations under metal- and catalyst-free conditions

Soni, Sonam, Koley, Suvajit, Singh, Maya Shankar

Journal:

Tetrahedron Letters

Année:

2017

Langue:

english

Fichier:

PDF, 925 KB

english, 2017

48

2-Mercaptoquinoline Analogues: A Potent Antileishmanial Agent

Koley, Suvajit, Tiwari, Neeraj, Neelabh,, Singh, Rakesh Kumar, Singh, Maya Shankar

Journal:

ChemistrySelect

Année:

2018

Langue:

english

Fichier:

PDF, 3.02 MB

english, 2018

49

ChemInform Abstract: Acid-Controlled Chemodivergent Synthesis of Three Differently Substituted Quinolines via Site Selective Coupling of ortho-Aminoaryl Ketones with α-Enolic Dithioesters.

Koley, Suvajit, Chanda, Tanmoy, Ramulu, B. Janaki, Chowdhury, Sushobhan, Singh, Maya Shankar

Journal:

Année:

2016

Fichier:

PDF, 32 KB

2016

50

ChemInform Abstract: Chemo- and Regio-Selective Synthesis of Hexacyclic Indeno-Fused Coumarins via Domino Diels-Alder Dimerization/Baeyer-Villiger Oxidation.

Chanda, Tanmoy, Chowdhury, Sushobhan, Koley, Suvajit, Singh, Maya Shankar

Journal:

Année:

2016

Fichier:

PDF, 21 KB

2016