Highly Diastereoselective Addition of Alkynylmagnesium Chlorides to <i>N</i>-<i>tert</i>-Butanesulfinyl Aldimines: A Practical and General Access to Chiral α-Branched Amines
作者:Bai-Ling Chen、Bing Wang、Guo-Qiang Lin
DOI:10.1021/jo902424m
日期:2010.2.5
N-tert-butanesulfinyl imines proceeded with a remarkably high diastereoselectivity (dr > 13:1, mostly diastereopure), and with a general scope of both reaction partners. The high dr translated into simplified purification and higher optical purity for the synthesis of a wide array of chiral α-branched amines. The alkyne functionality also provides a multitude of opportunities for further synthetic transformations
到加法alkynylmagnesium氯化物ñ -叔-butanesulfinyl亚胺具有显着高的非对映选择性进行(DR> 13:1,大多diastereopure)中,用两个反应伙伴的一般范围。高博士转化为简化的纯化和更高的光学纯度,用于合成各种各样的手性α-支化胺。炔烃功能还为进一步的合成转化提供了许多机会。使用该方法实现了(+)-牛尿嘧啶7和(-)-cuspareine 10的短时不对称合成。