Aminolithiation–arylation consecutive cyclization of N-(2-fluorophenyl)methylaminoalkylstyryls giving aryl-substituted pyrido[1,2-b]isoquinolines
作者:Yasutomo Yamamoto、Yasue Nakanishi、Ken-ichi Yamada、Kiyoshi Tomioka
DOI:10.1016/j.tet.2018.05.085
日期:2018.9
Aminolithiation-arylation tandem cyclization of N-(2-fluorophenyl)methylaminoalkylstyryls proceeded smoothly to give hexahydro-2H-pyrido[1,2-b]isoquinoline using a stoichiometric amount of n-BuLi with high trans selectivity. The arylation reaction was highly accelerated by the addition of HMPA. Both pyrido- and pyrrolo-[1,2-b]isoquinoline were successfully constructed by this tandem reaction. (C) 2018 Elsevier Ltd. All rights reserved.