In connection with our synthetic program, we had occasion to carry out the bromination of methyl allyl sulfide (1) at 0 OC in CC14 solution with the intention of obtaining the unsymmetrical dibromide 2. It was immediately clear from the'H NMR spectrum of the product that 2 was not formed and that the symmetrical structure 3 best accommodated the spectroscopic evidence. A 13C spectrum of the product showed only three peaks (Table I), ...
