Regioselectivity in Thermal Rhodium(II)-Catalysed Büchner-Type Reactions of Substituted Aryl Halides: Studies towards the Synthesis of Halide-Substituted Cycloheptatrienes

The results of Büchner-type reactions of various substituted aryl halide derivatives with ethyl diazoacetate are presented, together with a discussion of factors affecting the regioselectivity of these processes.