Synthesis of 2,3,5,6-tetrahydro-1-alkyl/aryl-1H-benzo[f]chromen-3-ol derivatives from β-tetralones and α,β-unsaturated aldehydes
作者:Jung-Hsuan Chen、Chihliang Chang、Hui-Ju Chang、Kwunmin Chen
DOI:10.1039/c1ob05966a
日期:——
Organocatalytic domino Michaelâhemiacetalization of β-tetralones with α,β-unsaturated aldehydes is presented. Treatment of β-tetralones with α,β-unsaturated aldehydes in the presence of diphenylprolinol silyl ether gave 2,3,5,6-tetrahydro-1-alkyl/aryl-1H-benzo[f]chromen-3-ol derivatives with high to excellent chemical yields (50â99%) and high levels of enantioselectivities (up to 96% ee).
本文介绍了有机催化多米诺Michael-半缩醛化反应,即在二苯基脯氨醇硅醚的存在下,β-四氢萘酮与α,β-不饱和醛反应,生成2,3,5,6-四氢-1-烷基/芳基-1H-苯并[f]色烯-3-醇衍生物,具有高达优秀的化学产率(50-99%)和高水平的手性选择性(高达96% ee)。