Bromothiolation of Arynes for the Synthesis of 2-Bromobenzenethiol Equivalents.

A new method to synthesize o -bromobenzenethiol equivalents through aryne intermediates is disclosed. Various o -bromobenzenethiol equivalents are prepared by the bromothiolation of aryne intermediates with potassium xanthates. Aryl xanthates serve in the synthesis of diverse organosulfurs involving phenothiazines and thianthrenes by further transformations.