作者:Takaaki Jinzaki、Mitsuru Arakawa、Hidenori Kinoshita、Junji Ichikawa、Katsukiyo Miura
DOI:10.1021/ol401663u
日期:2013.7.19
(dimethylsilyl)acetonitriles (Me2HSiCR3R4CN) react spontaneously with aldehydes in DMSO to give β-hydroxynitriles in good to high yields. The addition to ketones is effectively promoted by using MgCl2 or CaCl2. (Dimethylsilyl)acetonitrile (Me2HSiCH2CN) shows lower reactivity than the α-alkylated analogues. However, the parent reagent adds efficiently to aldehydes and ketones under catalysis by AcOLi or MgCl2.
α-烷基化的(二甲基甲硅烷基)乙腈(Me 2 HSiCR 3 R 4 CN)与醛在DMSO中自发反应,以高至高收率得到β-羟基腈。通过使用MgCl 2或CaCl 2可以有效地促进酮的添加。(二甲基甲硅烷基)乙腈(Me 2 HSiCH 2 CN)显示出比α-烷基化类似物低的反应性。但是,母体试剂在AcOLi或MgCl 2的催化下可以有效地添加到醛和酮中。