Regioselective Rhodium-Catalyzed Hydroformylation of 1,3-Dienes to Highly Enantioenriched β,γ-Unsaturated Aldehyes with Diazaphospholane Ligands
作者:Avery L. Watkins、Clark R. Landis
DOI:10.1021/ol102797t
日期:2011.1.7
Regioselective and enantioselective rhodium-catalyzed hydroformylation of 1,3-dienes with chiral bisdiazaphospholane ligands yields β,γ-unsaturated aldehydes that retain a C═C functionality for further conversion. The reaction conditions are mild, featuring low catalyst loadings (0.5 mol %), pressures readily obtained in glass bottles, and convenient reaction times (1.5−12 h). Optimized reaction conditions
带有手性双二氮杂膦烷配体的1,3-二烯的区域选择性和对映体选择性的铑催化加氢甲酰化生成β,γ-不饱和醛,其保留C═C官能度以用于进一步转化。反应条件温和,具有催化剂用量低(0.5 mol%),在玻璃瓶中容易获得的压力以及方便的反应时间(1.5-12 h)。优化的反应条件可产生高对映体选择性(> 90%ee),区域选择性(88-99%),并转化为10,1,3-二烯,涵盖多种取代模式,转化为β,γ-不饱和醛(99%)。