Dehalogenabromide or thiony1 bromide. butadiene (V), dimer trans-1, 2-dibromo-3, 4-di- isopropylidenec~ clobut~ ne, and 20% of other dimers and polymers. ment reactions of IV and V with iodide ion, thiophenoxide ion, and diethylamine were examined. tion of IV, V, and the dimer by lithium aluminum hydride waa also studied.
