Abstract
Efficient desulfurisation reactions of the conjugate addition products derived from 1-methyl-2-imidazolyl and 2-pyridyl sulfoxides have been achieved. Hydrodesulfurisation was effected either by reduction of the sulfoxides to sulfides, followed by treatment with Raney nickel, or more reliably by reaction of either the sulfides or the sulfoxides with nickel boride. Pyrolytic elimination furnished alkenes stereoselectively on heating the sulfoxides to reflux in toluene or chloroform.
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