Addition en 1,8 d'organocuprates lithiens saturés sur la cétone CH3 (CHCH)3COCH3 et sur l'ester CH3(CHCH)3COOC2H5
作者:F. Barbot、A. Kadib-Elban、Ph. Miginiac
DOI:10.1016/0022-328x(88)80253-5
日期:1988.5
The reaction of saturated lithium organocuprates with the trienic ketone CH3(CHCH)3COCH3 and with the trienic ester CH3 (CHCH)3COOC2H5 proceeds by a 1,8 conjugate addition to give a β,δ-diethylenic carboynl compound.
An efficient Ir(III) dihydride complex catalyzed 1,3-rearrangement of allylicalcohols was realized, affording the corresponding less easily accessible allylicalcohols regio- and stereoselectively in high yields from readily available starting materials. The reaction pathway involves a π-allyl-Ir(V) intermediate and the dihydride in Ir(III) dihydride complex acts as the hydrogen switch to modulate