Selective Monolithiation of Dibromobiaryls Using Microflow Systems
作者:Aiichiro Nagaki、Naofumi Takabayashi、Yutaka Tomida、Jun-ichi Yoshida
DOI:10.1021/ol8015572
日期:2008.9.18
Selective monolithiation of dibromobiaryls, such as 2,2'-dibromobiphenyl, 4,4'-dibromobiphenyl, 2,7-dibromo-9,9-dioctylfluorene, 2,2'-dibromo-1,1'-binaphthyl, and 5,5'-dibromo-2,2'-bithiophene, with 1 equiv of n-butyllithium followed by the reaction with electrophiles was achieved using a microflow system by virtue of fast micromixing and precise temperature control. Sequential introduction of two