Enantioselective 1,4-additions of ClMeAl(CHCHR) (R = alkyl, alkenyl, Ph) to cyclohexenones
作者:D. Willcox、S. Woodward、A. Alexakis
DOI:10.1039/c3cc48191c
日期:——
Chloromethylvinyl alanes (E)-ClMeAl(CH=CHR) prepared directly from terminal alkynes undergo 1,4-addition to cyclohexenone and 3-methylcyclohexenone in moderate to good yield (30-70%) and good to excellent stereoselectivity (80-98% ee) using readily available copper(I) sources and chiral ligands.
直接从末端炔烃制备的氯甲基乙烯基丙氨酸(E)-ClMeAl(CH = CHR)以中等至良好的收率(30-70%)和良好至优异的立体选择性(80-98%)加到环己烯酮和3-甲基环己烯酮中ee)使用现成的铜(I)来源和手性配体。