Reactivity of carbanions of Fischer-type carbene complexes with pyrylium salts. Synthesis and characterization of new gamma-methylenepyran carbene complexes via an addition-oxidation-deprotonation process - Université de Bretagne Occidentale Access content directly
Journal Articles Tetrahedron Year : 2002

Reactivity of carbanions of Fischer-type carbene complexes with pyrylium salts. Synthesis and characterization of new gamma-methylenepyran carbene complexes via an addition-oxidation-deprotonation process

Abstract

The condensation reaction between gamma-unsubstituted pyrylium salts and carbanions of Fischer-type carbene complexes allowed the synthesis of new gamma-methylenepyran carbene complexes. NMR data, single crystal X-ray analysis, and DFT calculations suggest that these complexes have a partial pyrylium character due to the pi electron-accepting ability of the carbenic fragment and to the electron-releasing properties of the methylenepyran part. (C) 2002 Elsevier Science Ltd. All rights reserved.

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hal-01175779 , version 1 (12-07-2015)

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B. Caro, P. Le Poul, F. Robin-Le Guen, J. Y. Saillard, S. Kahlal, et al.. Reactivity of carbanions of Fischer-type carbene complexes with pyrylium salts. Synthesis and characterization of new gamma-methylenepyran carbene complexes via an addition-oxidation-deprotonation process. Tetrahedron, 2002, 58 (37), pp.PII S0040-4020(02)00800-1. ⟨10.1016/S0040-4020(02)00800-1⟩. ⟨hal-01175779⟩
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