(2Z,1S)-1,3-diphenyl-2-propenol (3) is obtained from the chiral 5,6-dihydro-1,4-dithiin Ib in two steps and 60% enantiomeric excess. Combining our previously reported stereoselective double bond formation and this 1,4 asymmetric induction introduces a new route to chiral allylic alcohols with cis geometry from simple aldehydes and methyl ketones.
(2Z,1S)-1,3
-二苯基-2-
丙烯醇(3)由手性5,6-二氢-1,4-二
硫杂
环己烷Ib经两步反应,以60%的对映体过量率获得。结合我们之前报道的立体选择性双键形成和这种1,4不对称诱导,提供了一种从简单醛和甲基酮制备具有顺式几何结构的手性
烯丙醇的新途径。