Direct CC triple bond formation from the CC double bond with potassium tert-butoxide in dimethylformamide containing trace amounts of oxygen

Abstract

A novel and facile method for direct acetylenic bond formation from the CC double bond by treatment with KOBu^t in dimethylformamide has been found both in a 9,10-bis(4′-substituted styryl)anthracene series and in a 4-substituted 4′-nitro-stilbene series; its scope and limitations have been examined.