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Your search keyword '"Bhargava, Gaurav"' showing total 5 results
Start Over Author "Bhargava, Gaurav" Topic alkenes Publication Year Range Last 50 years Publication Type Academic Journals
5 results on '"Bhargava, Gaurav"'

1. Rhodium-catalyzed intramolecular [3+2+2] cycloadditions between alkylidenecyclopropanes, alkynes, and alkenes.

Author

Araya M, Gulías M, Fernández I, Bhargava G, Castedo L, Mascareñas JL, and López F

Subjects
Catalysis, Cycloaddition Reaction, Models, Molecular, Stereoisomerism, Alkenes chemistry, Alkynes chemistry, Cyclopropanes chemistry, Rhodium chemistry
Abstract

A Rh-catalyzed intramolecular [3+2+2] cycloaddition is reported. The cycloaddition affords synthetically relevant 5,7,5-fused tricyclic systems of type 2 from readily available dienyne precursors. The transformation takes place with moderate or good yields, high diastereoselectivity, and total chemoselectivity., (© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2014
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2. Rhodium-Catalyzed Intramolecular [3+2+2] Cycloadditions between Alkylidenecyclopropanes, Alkynes, and Alkenes.

Author

Araya, Marisel, Gulías, Moisés, Fernández, Israel, Bhargava, Gaurav, Castedo, Luis, Mascareñas, José Luis, and López, Fernando

Subjects
RHODIUM catalysts, RING formation (Chemistry), ALKYNES, ALKENES, INTRAMOLECULAR catalysis
Abstract

A Rh-catalyzed intramolecular [3+2+2] cycloaddition is reported. The cycloaddition affords synthetically relevant 5,7,5-fused tricyclic systems of type 2 from readily available dienyne precursors. The transformation takes place with moderate or good yields, high diastereoselectivity, and total chemoselectivity. [ABSTRACT FROM AUTHOR]

Published
2014
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3. Palladium-catalyzed [3C + 2C + 2C] cycloaddition of enynylidenecyclopropanes: efficient construction of fused 5-7-5 tricyclic systemsThis article is part of a ChemComm ‘Catalysis in Organic Synthesis’ web-theme issue showcasing high quality research in organic chemistry. Please see our website (http://www.rsc.org/chemcomm/organicwebtheme2009) to access the other papers in this issue.Electronic supplementary information (ESI) available: Experimental procedures and spectroscopic data of previously unknown reaction products. CCDC 748242. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/b919258a

Author

Bhargava, Gaurav, Trillo, Beatriz, Araya, Marisel, López, Fernando, Castedo, Luis, and Mascareñas, José L.

Subjects
*RING formation (Chemistry), *PALLADIUM catalysts, *PROPANE, *CATALYSIS, *ORGANIC synthesis, *ALKYNES, *ALKENES, *CYCLIC compounds
Abstract

We report a Pd-catalyzed intramolecular [3C + 2C + 2C] cycloaddition between alkylidenecyclopropanes, alkynes and alkenes. The method provides synthetically relevant 5-7-5 tricyclic structures, with good chemoselectivity and complete diastereoselectivity. [ABSTRACT FROM AUTHOR]

Published
2010
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4. An unprecedented methylene oxidation accompanying the aza Diels–Alder reactions of acyclic unactivated alkenes: synthesis of novel quinolin-3-one substituted pyrimidinone derivatives

Author

Mohan, Chander, Bhargava, Gaurav, Pannu, A.P.S., and Mahajan, Mohinder P.

Subjects
*DIELS-Alder reaction, *ALKENES, *PYRIMIDINES, *METHANE
Abstract

Abstract: The regioselective aza Diels–Alder reactions of isopropenyl pyrimidinone with N-arylimines in the presence of Y/Sc triflates as catalyst are described. An unprecedented oxidation of methylene to carbonyl occurred resulting in exclusive formation of 6-oxo-1,6-dihydropyrimidin-5-yl-4H-quinolin-3-one derivatives. [Copyright &y& Elsevier]

Published
2007
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5. ChemInform Abstract: Rhodium-Catalyzed Intramolecular [3 + 2 + 2] Cycloadditions Between Alkylidenecyclopropanes, Alkynes, and Alkenes.

Author

Araya, Marisel, Gulias, Moises, Fernandez, Israel, Bhargava, Gaurav, Castedo, Luis, Mascarenas, Jose Luis, and Lopez, Fernando

Subjects
*ALKYNES, *RHODIUM catalysts, *INTRAMOLECULAR catalysis, *RING formation (Chemistry), *PYRROLE derivatives, *ALKENES
Abstract

leading to 5,7,5-fused tricyclic systems [ABSTRACT FROM AUTHOR]

Published
2015
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