2 study of the reaction of sulfuric acid upon a number of selected trichloromethylcarbinols is reported. t-Trichlorornethylcarbinols having two methyls or one methyl together with one chloromethyl attached to the carbinol carbon gave good yields of the corresponding a-chloro acid chlorides by a pinacol type of rearrangement. The presence of water in the reaction mixture caused hydrolysis of part of each a-chloro acid chloride to the corresponding a- ...