Stereoretentive Addition of<i>N</i>-<i>tert</i>-Butylsulfonyl-α-Amido Silanes to Aldehydes, Ketones, α,β-Unsaturated Esters, and Imines
作者:Tsuyoshi Mita、Keisuke Saito、Masumi Sugawara、Yoshihiro Sato
DOI:10.1002/asia.201600270
日期:2016.5.20
Enantioenriched N‐tert‐butylsulfonyl‐α‐amido silanes were successfully reacted with aldehydes, ketones, imines, and α,β‐unsaturated esters in the presence of a sub‐stoichiometric amount of CsF (0.5 equiv) in 1,2‐dimethoxyethane (DME) at −20 °C to afford the corresponding coupling products with up to 89 % enantiospecificity in a retentive manner.
对映体富集Ñ -叔-butylsulfonyl-α -酰氨基硅烷进行了成功地与醛,酮,亚胺,和α,β -不饱和酯中的CsF(0.5当量)的亚化学计量的量的存在下,在1,2-二甲氧基乙烷反应( DME)在-20°C下以保持性方式提供相应的偶联产物,其对映体特异性高达89%。