A regioselective formal [4 + 2] cycloaddition for the assembly of highly functionalized benzene rings was successfully developed. In this reaction, olefinic C–H bond functionalization/cyclization cascadereaction followed by rearomatization led to the desired molecules in one step under mild reaction conditions. This protocol also displays a broad substrate scope and good tolerance to a wide range
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.