Maya Shankar Singh : rechercher sur Z-Library

Singh, Maya Shankar, Nagaraju, Anugula, Verma, Girijesh Kumar, Shukla, Gaurav, Verma, Rajiv Kumar, Srivastava, Abhijeet, Raghuvanshi, Keshav

Année:

2012

Fichier:

PDF, 28 KB

2012

Eco-efficient, regioselective and rapid access to 4,5-disubstituted 1,2,3-thiadiazoles via [3 + 2] cycloaddition of α-enolicdithioesters with tosyl azide under solvent-free conditions

Journal:

Green Chemistry

Année:

2013

Langue:

english

Fichier:

PDF, 799 KB

english, 2013

Catalyst-free one-pot four-component domino reactions in water–PEG-400: highly efficient and convergent approach to thiazoloquinoline scaffolds

Nagaraju, Anugula, Ramulu, B. Janaki, Shukla, Gaurav, Srivastava, Abhijeet, Verma, Girijesh Kumar, Raghuvanshi, Keshav, Singh, Maya Shankar

Journal:

Green Chemistry

Année:

2015

Langue:

english

Fichier:

PDF, 789 KB

english, 2015

ChemInform Abstract: Dioximes as Synthons for Medium Ring Heterocyclic Compounds.

Maya Shankar Singh, Ashwani Kumar Singh

Journal:

Maya Shankar Singh, Ganesh Pandey

Année:

2000

Fichier:

PDF, 32 KB

2000

ChemInform Abstract: A Convenient Synthetic Entry into 2,2-Diorganyl-5,6-diaryl-1,3,4,2-dioxaza Silacyclohexene Derivatives via Dianion Cyclization: Sequential One-Pot Cyclosylation.

Journal:

Rajiv K. Verma, Hiriyakkanavar Ila, Maya Shankar Singh

Année:

2000

Fichier:

PDF, 29 KB

2000

ChemInform Abstract: Heteroaromatic Annulation Studies on 2-[Bis(methylthio)methylene]-1,3-indanedione: Efficient Routes to Indenofused Heterocycles.

Journal:

Ganesh Chandra Nandi, Subhasis Samai, Maya Shankar Singh

Année:

2010

Fichier:

PDF, 43 KB

2010

ChemInform Abstract: Biginelli and Hantzsch-Type Reactions Leading to Highly Functionalized Dihydropyrimidinone, Thiocoumarin, and Pyridopyrimidinone Frameworks via Ring Annulation with β-Oxodithioesters.

Journal:

Rajiv Kumar Verma, Girijesh K. Verma, Keshav Raghuvanshi, Maya Shankar Singh

Année:

2011

Fichier:

PDF, 38 KB

2011

ChemInform Abstract: An Expedient Route to Highly Functionalized 2H-Chromene-2-thiones via Ring Annulation of β-Oxodithioesters Catalyzed by InCl3 under Solvent-Free Conditions.

Journal:

Pallavi Singh, Rajiv K. Verma, Maya Shankar Singh

Année:

2011

Fichier:

PDF, 79 KB

2011

ChemInform Abstract: Efficient Synthesis of Naphthodiazacrown Ethers.

Journal:

Sushobhan Chowdhury, Ganesh Chandra Nandi, Subhasis Samai, Maya Shankar Singh

Année:

2011

Fichier:

PDF, 27 KB

2011

ChemInform Abstract: Regioselective Synthesis of Tetrahydrothiochromen-5-ones via a One-Pot Three-Component Solvent-Free Domino Protocol.

Journal:

Subhasis Samai, Ganesh Chandra Nandi, Sushobhan Chowdhury, Maya Shankar Singh

Année:

2011

Fichier:

PDF, 36 KB

2011

ChemInform Abstract: L-Proline Catalyzed Synthesis of Densely Functionalized Pyrido[2,3-d]pyrimidines via Three-Component One-Pot Domino Knoevenagel aza-Diels—Alder Reaction.

Journal:

Ganesh Chandra Nandi, Subhasis Samai, Maya Shankar Singh

Année:

2011

Fichier:

PDF, 27 KB

2011

ChemInform Abstract: One-Pot Two-Component [3 + 2] Cycloaddition/Annulation Protocol for the Synthesis of Highly Functionalized Thiophene Derivatives.

Journal:

Rajiv K. Verma, Hiriyakkanavar Ila, Maya Shankar Singh

Année:

2012

Fichier:

PDF, 29 KB

2012

Heteroaromatic annulation studies on 2-[bis(methylthio)methylene]-1,3-indanedione: efficient routes to indenofused heterocycles

Journal:

Subhasis Samai, Ganesh Chandra Nandi, Sushobhan Chowdhury, Maya Shankar Singh

Année:

2010

Langue:

english

Fichier:

PDF, 1.30 MB

english, 2010

l-Proline catalyzed synthesis of densely functionalized pyrido[2,3-d]pyrimidines via three-component one-pot domino Knoevenagel aza-Diels–Alder reaction

Journal:

Pallavi Singh, Rajiv K. Verma, Maya Shankar Singh

Année:

2011

Langue:

english

Fichier:

PDF, 492 KB

english, 2011

Efficient synthesis of naphthodiazacrown ethers

Journal:

Rajiv Kumar Verma, Girijesh K. Verma, Keshav Raghuvanshi, Maya Shankar Singh

Année:

2011

Langue:

english

Fichier:

PDF, 215 KB

english, 2011

An expedient route to highly functionalized 2H-chromene-2-thiones via ring annulation of β-oxodithioesters catalyzed by InCl3 under solvent-free conditions

Journal:

Verma, Rajiv Kumar, Verma, Girijesh Kumar, Shukla, Gaurav, Nagaraju, Anugula, Singh, Maya Shankar

Année:

2011

Langue:

english

Fichier:

PDF, 324 KB

english, 2011

4-Dimethylamino Pyridine-Promoted One-Pot Three-Component Regioselective Synthesis of Highly Functionalized 4H-Thiopyrans via Heteroannulation of β-Oxodithioesters

Journal:

ACS Combinatorial Science

Année:

2012

Langue:

english

Fichier:

PDF, 741 KB

english, 2012

Molecular Docking and in Vitro Antileishmanial Evaluation of Chromene-2-thione Analogues

Verma, Rajiv Kumar, Prajapati, Vijay Kumar, Verma, Girijesh Kumar, Chakraborty, Deblina, Sundar, Shyam, Rai, Madhukar, Dubey, Vikash Kumar, Singh, Maya Shankar

Journal:

ACS Medicinal Chemistry Letters

Année:

2012

Langue:

english

Fichier:

PDF, 281 KB

english, 2012

Recent developments in solvent-free multicomponent reactions: a perfect synergy for eco-compatible organic synthesis

Singh, Maya Shankar, Chowdhury, Sushobhan

Journal:

Tanmoy Chanda, Rajiv Kumar Verma, Dr. Maya Shankar Singh

Année:

2012

Langue:

english

Fichier:

PDF, 4.31 MB

english, 2012

InCl3-Driven Regioselective Synthesis of Functionalized/Annulated Quinolines: Scope and Limitations

Journal:

Chemistry – An Asian Journal

Année:

2012

Langue:

english

Fichier:

PDF, 846 KB

english, 2012

ChemInform Abstract: Solvent-Free Sonochemical One-Pot Three-Component Synthesis of 2H-Indazolo[2,1-b]phthalazine-1,6,11-triones and 1H-Pyrazolo[1,2-b]phthalazine-5,10-diones.

Gaurav Shukla, Rajiv K. Verma, Girijesh K. Verma, Maya Shankar Singh

Journal:

Maya Shankar Singh, Ganesh Chandra Nandi, Subhasis Samai

Année:

2012

Fichier:

PDF, 48 KB

2012

ChemInform Abstract: DABCO-Promoted Three-Component Regioselective Synthesis of Functionalized Chromen-5-ones and Pyrano[3,2-c]chromen-5-ones via Direct Annulation of α-Oxoketene-N,S-arylaminoacetals under Solvent-Free Conditions.

Journal:

Subhasis Samai, Ganesh Chandra Nandi, Maya Shankar Singh

Année:

2012

Fichier:

PDF, 38 KB

2012

ChemInform Abstract: Highly Convergent One-Pot Four-Component Regioselective Synthesis of 4H-Benzo[f]chromenes via Annulation of β-Oxodithioesters.

Journal:

Rajiv Kumar Verma, Girijesh Kumar Verma, Gaurav Shukla, Maya Shankar Singh

Année:

2012

Fichier:

PDF, 36 KB

2012

ChemInform Abstract: InCl3 Catalyzed Domino Route to 2H-Chromene-2-ones via [4 + 2] Annulation of 2-Hydroxyarylaldehydes with α-Oxoketene Dithioacetal under Solvent-Free Conditions.

Journal:

Tanmoy Chanda, Rajiv Kumar Verma, Maya Shankar Singh

Année:

2012

Fichier:

PDF, 33 KB

2012

ChemInform Abstract: InCl3-Driven Regioselective Synthesis of Functionalized/Annulated Quinones: Scope and Limitations.

Journal:

Maya Shankar Singh, Sushobhan Chowdhury

Année:

2012

Fichier:

PDF, 42 KB

2012

ChemInform Abstract: Recent Developments in Solvent-Free Multicomponent Reactions: A Perfect Synergy for Eco-Compatible Organic Synthesis

Journal:

Subhasis Samai, Ganesh Chandra Nandi, Maya Shankar Singh

Année:

2012

Fichier:

PDF, 18 KB

2012

Highly convergent one-pot four-component regioselective synthesis of 4H-benzo[f]chromenes via annulation of β-oxodithioesters

Journal:

Gaurav Shukla, Rajiv K. Verma, Girijesh K. Verma, Maya Shankar Singh

Année:

2012

Langue:

english

Fichier:

PDF, 491 KB

english, 2012

Solvent-free sonochemical one-pot three-component synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11-triones and 1H-pyrazolo[1,2-b]phthalazine-5,10-diones

Journal:

Girijesh K. Verma, Keshav Raghuvanshi, Ram Kumar, Maya Shankar Singh

Année:

2011

Langue:

english

Fichier:

PDF, 274 KB

english, 2011

An efficient one-pot three-component synthesis of functionalized pyrimido[4,5-b]quinolines and indeno fused pyrido[2,3-d]pyrimidines in water

Journal:

Singh, Shweta, Verma, Rajiv Kumar, Raghuvanshi, Keshav, Singh, Maya Shankar

Année:

2012

Langue:

english

Fichier:

PDF, 274 KB

english, 2012

Synthesis of benzo fused dioxadiazasilamacrocycles via remote dianion cyclization

Journal:

Nandi, Ganesh Chandra, Samai, Subhasis, Singh, Maya Shankar

Année:

2012

Langue:

english

Fichier:

PDF, 311 KB

english, 2012

Biginelli and Hantzsch-Type Reactions Leading to Highly Functionalized Dihydropyrimidinone, Thiocoumarin, and Pyridopyrimidinone Frameworks via Ring Annulation with β-Oxodithioesters

Journal:

Journal of Organic Chemistry

Année:

2010

Langue:

english

Fichier:

PDF, 1.05 MB

english, 2010

Recent advances in InCl3-catalyzed one-pot organic synthesis

Maya Shankar Singh, Keshav Raghuvanshi

Journal:

Nandi, Ganesh Chandra, Samai, Subhasis, Singh, Maya Shankar

Année:

2012

Langue:

english

Fichier:

PDF, 1.49 MB

english, 2012

One-Pot Two-Component [3 + 2] Cycloaddition/Annulation Protocol for the Synthesis of Highly Functionalized Thiophene Derivatives

Journal:

Journal of Organic Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 1.15 MB

english, 2011

Regioselective Synthesis of Tetrahydrothiochromen-5-ones via a One-Pot Three-Component Solvent-Free Domino Protocol

Chowdhury, Sushobhan, Nandi, Ganesh Chandra, Samai, Subhasis, Singh, Maya Shankar

Journal:

Organic Letters

Année:

2011

Langue:

english

Fichier:

PDF, 861 KB

english, 2011

One-Pot Three-Component Heteroannulation of β-Oxo Dithioesters, Amines and Hydroxylamine: Regioselective, Facile and Straightforward Entry to 5-Substituted 3-Aminoisoxazoles

Samai, Subhasis, Chanda, Tanmoy, Ila, Hiriyakkanavar, Singh, Maya Shankar

Journal:

European Journal of Organic Chemistry

Année:

2013

Langue:

english

Fichier:

PDF, 678 KB

english, 2013

One-pot straightforward approach to 2,3-disubstituted benzo/naphtho[b]furans via domino annulation of α-oxoketene dithioacetals and 1,4-benzo/naphthoquinone mediated by AlCl3 at room temperature

Verma, Girijesh Kumar, Verma, Rajiv Kumar, Shukla, Gaurav, Anugula, Nagaraju, Srivastava, Abhijeet, Singh, Maya Shankar

Journal:

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

Année:

2013

Langue:

english

Fichier:

PDF, 1.58 MB

english, 2013

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

Journal:

Ramulu, B. Janaki, Chanda, Tanmoy, Chowdhury, Sushobhan, Nandi, Ganesh C., Singh, Maya Shankar

Année:

2013

Langue:

english

Fichier:

PDF, 2.65 MB

english, 2013

Organocatalyzed straightforward synthesis of highly fluorescent 3,5-disubstituted 2,6-dicyanoanilines via domino annulation of α-enolicdithioesters with malononitrile

Journal:

Singh, Maya Shankar, Nandi, Ganesh Chandra, Chanda, Tanmoy

Année:

2013

Langue:

english

Fichier:

PDF, 512 KB

english, 2013

β-Oxodithioesters: a new frontier for diverse heterocyclic architectures

Journal:

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

Année:

2013

Langue:

english

Fichier:

PDF, 796 KB

english, 2013

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

Journal:

Verma, Girijesh Kumar, Shukla, Gaurav, Nagaraju, Anugula, Srivastava, Abhijeet, Raghuvanshi, Keshav, Singh, Maya Shankar

Année:

2013

Langue:

english

Fichier:

PDF, 657 KB

english, 2013

DMAP-promoted domino annulation of β-ketothioamides with internal alkynes: a highly regioselective access to functionalized 1,3-thiazolidin-4-ones at room temperature

Journal:

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

Année:

2014

Langue:

english

Fichier:

PDF, 265 KB

english, 2014

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

Journal:

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

Année:

2014

Langue:

english

Fichier:

PDF, 892 KB

english, 2014

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

Journal:

European Journal of Organic Chemistry

Année:

2014

Langue:

english

Fichier:

PDF, 676 KB

english, 2014

A facile and straightforward synthesis of 1,2,3-thiadiazoles from α-enolicdithioesters via nitrosation/reduction/diazotization/cyclization cascade in one-pot

Nagaraju, Anugula, Ramulu, B. Janaki, Shukla, Gaurav, Srivastava, Abhijeet, Verma, Girijesh Kumar, Raghuvanshi, Keshav, Singh, Maya Shankar

Journal:

Shukla, Gaurav, Verma, Girijesh Kumar, Nagaraju, Anugula, Verma, Rajiv Kumar, Raghuvanshi, Keshav, Singh, Maya Shankar

Année:

2014

Langue:

english

Fichier:

PDF, 424 KB

english, 2014

DMAP mediated one-pot domino thienannulation: a versatile, regioselective and green mechanochemical route to naphtho[2,3-b]thiophenes

Journal:

Nagaraju, Anugula, Shukla, Gaurav, Srivastava, Abhijeet, Ramulu, B. Janaki, Verma, Girijesh Kumar, Raghuvanshi, Keshav, Singh, Maya Shankar

Année:

2013

Langue:

english

Fichier:

PDF, 658 KB

english, 2013

Easy access to α-hydroxyimino-β-oxodithioesters and application towards the synthesis of diverse 1,4-thiazine-3-ones via reduction/annulation cascade

Journal:

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

Année:

2014

Langue:

english

Fichier:

PDF, 700 KB

english, 2014

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

Journal: