Ruthenium-Catalyzed Diyne Hydrative Cyclization: Synthesis of Substituted 1,3-Diene Synthons
作者:Barry M. Trost、Xiaojun Huang
DOI:10.1021/ol0502937
日期:2005.5.1
[reaction: see text]. A novel and versatile strategy for the synthesis of highly functionalized substituted 3-sulfolenes based on [CpRu(CH3CN)3]PF6-catalyzed hydrative cyclization has been developed. A marked ketone directing effect in ruthenium-catalyzed cyclization was observed for the first time. This provides complementary chemoselectivity for the synthesis of 3-sulfolenes and other cyclic enones
[反应:请参见文字]。已开发出一种新颖且用途广泛的策略,用于基于[CpRu(CH3CN)3] PF6催化的水合环化反应合成高度官能化的3-硫代烯烃。首次在钌催化的环化反应中观察到明显的酮导向作用。这提供了互补的化学选择性,可用于合成3-硫杂环戊烷和其他环状烯酮。该方法的实用性已通过SO2挤出3-硫烯得到1,3-二烯以及随后的分子间和分子内Diels-Alder反应得到了证明。