Selective Monoacylation of Symmetrical Diamines via Prior Complexation with Boron
作者:Zhongxing Zhang、Zhiwei Yin、Nicholas A. Meanwell、John F. Kadow、Tao Wang
DOI:10.1021/ol0300773
日期:2003.9.1
[reaction: see text] Pretreatment of a symmetrical primary or secondary diamine with 9-BBN prior to the addition of an acyl chloride significantly suppressed undesired diacylation, and the product of monoacylation predominated. The reactive preference is interpreted as the result of a selective deactivation of one nitrogen atom of the diamine by 9-BBN.
[反应:见正文]在添加酰氯之前,用9-BBN预处理对称的伯或仲二胺会显着抑制不希望的二酰化作用,并且单酰化产物占主导地位。反应性偏爱被解释为二胺的一个氮原子被9-BBN选择性失活的结果。