Highly convenient electrolysis procedure for the preparation of. alpha.-halogenated ketones and acetals from enol acetates, enol ethers, and silyl enol ethers
electrochemical conversion of 6-methoxydihydropyran has been carried out by Kruglikova et a1. 2 in MeOH-NH4Br, giving a 45% yield of'3-bromo-2, 6-dimethoxytetrahydro-pyran. More recently, White and Coleman7 reported a preparative procedure of acetals of a-chloro aldehydes from alkanols by an electrolytic reaction. In a practical sense, however, synthetic utility of the electrochemical procedures has not been recognized yet. In an effort to ...