Regioselective functionalization of 2-arylazetidines: evaluating the ortho-directing ability of the azetidinyl ring and the α-directing ability of the N-substituent
作者:Leonardo Degennaro、Marina Zenzola、Piera Trinchera、Laura Carroccia、Arianna Giovine、Giuseppe Romanazzi、Aurelia Falcicchio、Renzo Luisi
DOI:10.1039/c3cc48555b
日期:——
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。