Palladium mediated synthesis of conjugated E or Z enones and unsymmetrical divinyl ketones. one-pot preparation of isoegomaketone
作者:N. Jabri、A. Alexakis、J.F. Normant
DOI:10.1016/s0040-4020(01)87356-7
日期:1986.1
The palladium (o) catalyzed coupling of acyl halides or anhydrides with alkenyl copper reagents furnishes α,β ethylenic ketones and α,β-α,β' diethylenic ketones in high yield. The substitution pattern of the alkenyl copper reagent, directly obtained by carbocupration of alkynes, is fully retained. Anhydrides of Z-ethylenic acids also retain their Z stereochemistry. β-halogeno-vinyl ketones react under
The reactivity and the stability of organomanganese reagents prepared from the ate complexes MnX2 . 2LiBr (X = Br,I) and MnCl2 . R4NX (X = Br, Cl) were studied. The preparation and the use for synthetic applications of stable sec-and tert-alkylmanganese bromides in ether as well as the acylation of RMnCl by R'COOCOOEt in THF were successfully achieved for the first time. (C) 1998 Elsevier Science Ltd. All rights reserved.
Alkenyl-copper derivatives 24
作者:N Jabri、A Alexakis、J.F Normant
DOI:10.1016/s0040-4039(00)94046-2
日期:1983.1
COHIEZ G.; ALEXAKIS A.; NORMANT J. F., SYNTH. COMMUN. 1979, NO 7, 639-645