Diels-Alder reactions of 2-Alkenylboranes and cis-1-alkenylboranes. Anomalous selectivity that allows a choice of regiochemistry
作者:Daniel A. Singleton、Kyeongsook Kim、Jose P. Martinez
DOI:10.1016/s0040-4039(00)93382-3
日期:1993.5
2-Alkenyl- and cis-1-alkenylboranes are highly reactive Diels-Alder dienophiles which display unusual selectivity patters. By taking advantage of a reversal of regiochemistry of reaction with alkenyldihalo- versus alkenyldialkylboranes, any desired regioisomeric product may be favored, usually with very high selectivity.
2-烯基-和顺-1-烯基硼烷是高反应性的狄尔斯-阿尔德二烯亲和物,其显示出不同寻常的选择性模式。通过利用与烯基二卤代-与烯基二烷基硼烷的反应的区域化学的逆转,通常以非常高的选择性,任何期望的区域异构产物都是有利的。