The halide mixtures were obtained by treatment of the propargyl alcohols, 11, with hydrochloric acid, calcium chloride, and copper bronze6 (see Table 11). Attempts were made to increase the proportions of IV by rearrangement with a mixture of ammonium chloride, hydrochloric acid, cuprous chloride, and copper powder, but no change was observed. When the cuprous chloride and copper bronze were omitted from the reaction ...