Addition de carbanions α benchrotreniques sur divers aldehydes non enolisables; evolution des produits primaires d'addition par oxydation d'oppenauer-woodward, influence de la substitution
作者:M.-C. Senechal-Tocquer、D. Senechal、J.-Y. Le Bihan、D. Gentric、B. Caro
DOI:10.1016/0022-328x(87)80307-8
日期:1987.4
Aromatic hydrocarbons complexed with a Cr(CO)3 unit react with benzaldehydes and furfural in THF and in the presence of t-BuOK at the benzylic position to give condensation products in good yields. Formation of ketones by “in situ Oppenauer-Woodward” oxidation is observed. Influence of ring substituents on this formation is discussed.
Elaboration of α-substituted benzyl ethers and sulphides by suppression of the Wittig and related rearrangements
作者:Stephen G. Davies、Nicholas J. Holman、Charles A. Laughton、Bryan E. Mobbs
DOI:10.1039/c39830001316
日期:——
Co-ordination of benzyl alkyl ethers and sulphides to chromium tricarbonyl allows α-substitution via the corresponding α-carbanions to be achieved by suppression of the Wittig and related rearrangements.