The regioselective lithiationâfunctionalization of 2-arylazetidines has been explored. The nature of the N-substituent is mainly responsible for a regioselectivity switch. ortho-Lithiation occurred, using hexyllithium as a greener base, in N-alkylazetidines, while α-benzylic lithiation has been observed with N-Boc azetidines.
已经探讨了2-芳基氮杂
环丁烷的区域选择性
锂化-功能化。N-取代基的性质主要导致了区域选择性的转换。在N-烷基氮杂
环丁烷中,使用六基
锂作为更环保的碱时发生了邻位
锂化,而在N-Boc氮杂
环丁烷中观察到了α-苄基
锂化。