Dichlorocarbene addition to 1-methoxybiphenylene. Formation of a benzo[3,4]cyclobuta[1,2-c]tropone derivative
Abstract
1-Methoxybiphenylene (1) reacts with dichlorocarbene to give 1-chlorobenzo[3,4]cyclobuta-[1,2-c]tropone (2) and two fluorenone derivatives (3) and (4).