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Your search keyword '"Bhargava, Gaurav"' showing total 4 results
Start Over Author "Bhargava, Gaurav" Topic alkynes Topic ring formation (chemistry) Publication Year Range Last 50 years
4 results on '"Bhargava, Gaurav"'

1. Rhodium-catalysed chemo- and regio-selective [3 + 2+2] cycloadditions of bis(methylenecyclopropanes) and alkynes: Synthesis of spirocyclic 5–7 condensed cycloheptenes.

Author

Kuila, Bilash, Sharma, Priyanka, Mahajan, Dinesh, Singh, Prabhpreet, and Bhargava, Gaurav

Subjects
SPIRO compounds synthesis, RING formation (Chemistry), ALKYNES
Abstract

Rhodium-catalyzed intermolecular [3 + 2+2] cycloaddition reactions of bis(methylenecyclopropanes) with different alkynes are described. The rhodium-catalyzed [3 + 2+2] cycloadditions resulted in the formation of functionalized 5–7–3 spirocyclic carbocycles in moderate yields with excellent regio- and chemo-selectivity. [ABSTRACT FROM AUTHOR]

Published
2020
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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. 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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