Studies on Acetylenic Compounds. I

Oxidation (i). Oxidation of Acetylenic Alcohols. (1)

Abstract

Following acetylenic alcohols were oxidized with manganese dioxide and corresponding acetylenic ketones were formed without affecting the triple bond. The alcohols used were 1-phenyl-2-propyn-1-ol, 1, 4-diphenyl-3-butyn-2-ol, 1-hexyn-3-ol, 1-phenyl-2, 4-heptadiyn-1-ol, 1-(2-hydroxyphenyl)-2, 4-hexadiyn-1-ol, 1-(1-naphthyl)-2, 4-hexadiyn-1-ol, 1-(3-methoxy-4-hydroxyphenyl)-2, 4-hexadiyn-1-ol, 1, 6-di (1-naphthyl)-2, 4-hexadiyne-1, 6-diol (two isomers of m.p. 182° and 169°), and 1, 6-diphenyl-2, 4-hexadiyne-1, 6-diol (two isomers of m.p. 135° and 113°).