Regio- and Enantioselective Intermolecular Hydroacylation: Substrate-Directed Addition of Salicylaldehydes to Homoallylic Sulfides
作者:Matthew M. Coulter、Kevin G. M. Kou、Baye Galligan、Vy M. Dong
DOI:10.1021/ja107198e
日期:2010.11.24
enantioselective intermolecular olefin hydroacylation under mild conditions. Hydroacylations between homoallylic sulfides, containing a substrate-bound directing group, and salicylaldehyde derivatives occur in the presence of a spiro-phosphoramidite ligand, (R)-SIPHOS-PE, to give α-branched ketones in >20:1 selectivity and up to 97% ee. Our conditions are also applicable to the asymmetric intermolecular hydroacylation
我们报告了在温和条件下 Rh 催化的、区域选择性和对映选择性的分子间烯烃加氢酰化。在螺亚磷酰胺配体 (R)-SIPHOS-PE 存在下,含有底物结合导向基团的同烯丙基硫化物和水杨醛衍生物之间发生氢酰化,以 >20:1 的选择性和高达97% EE。我们的条件也适用于 1,2-二取代烯烃的不对称分子间加氢酰化。