Concise synthesis of functionalized benzocyclobutenones
作者:P.-H. Chen、Nikolas A. Savage、Guangbin Dong
DOI:10.1016/j.tet.2014.03.080
日期:2014.7
to access functionalized benzocyclobutenones from 3-halophenol derivatives is described. This modified synthesis employs a [2+2] cycloaddition between benzynes generated from dehydrohalogenation of aryl halides using LiTMP and acetaldehyde enolate generated from n-BuLi and THF, followed by oxidation of the benzocyclobutenol intermediates to provide benzocyclobutenones. The [2+2] reaction can be run on