Reactivity of carbanions of Fischer-type carbene complexes with pyrylium salts. Synthesis and characterization of new γ-methylenepyran carbene complexes via an addition–oxidation–deprotonation process
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- Authors:
- Caro, Bertrand
Le Poul, Pascal
Robin-Le Guen, Françoise
Saillard, Jean-Yves
Kahlal, Samia
Moinet, Claude
Le Poul, Nicolas
Vaissermann, Jacqueline - Source:
-
Tetrahedron . Sep2002, Vol. 58 Issue 37, p7519. 12p. - Publication Date:
- 2002-09-09
- Language:
- English
- Abstract:
- The condensation reaction between γ-unsubstituted pyrylium salts and carbanions of Fischer-type carbene complexes allowed the synthesis of new γ-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 π electron-accepting ability of the carbenic fragment and to the electron-releasing properties of the methylenepyran part. [Copyright &y& Elsevier]
- Subjects:
- CONDENSATION
PYRYLIUM compounds
CARBANIONS - Format:
- Academic Journal
- DOI:
- 10.1016/S0040-4020(02)00800-1
- Database:
- Academic Search Index
- Journal:
- Tetrahedron
- Volume:
- 58
- Issue:
- 37
- Page Start:
- 7519
- Page Count:
- 12
- ISSN:
- 00404020
