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.
http://hal.univ-brest.fr/hal-01175779
Contributeur : Nicolas Le Poul
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Soumis le : dimanche 12 juillet 2015 - 21:17:02
Dernière modification le : mercredi 16 mai 2018 - 11:22:53
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, Elsevier, 2002, 58 (37), pp.PII S0040-4020(02)00800-1. 〈10.1016/S0040-4020(02)00800-1〉. 〈hal-01175779〉
