Reaction of secondary phosphine oxides with acylacetylenes
作者:M. Yu. Dvorko、T. E. Glotova、I. A. Ushakov、N. K. Gusarova
DOI:10.1134/s1070428010040056
日期:2010.4
Secondary phosphine oxides reacted with 1-alkanoyl-2-phenylacetylenes in chemoselective fashion under mild conditions (20 degrees C, THF) in the absence of a catalyst (diphenylphosphine oxide) or in the presence of potassium hydroxide [bis(2-phenylethyl)phosphine oxide] to give 1-alkyl-1-diphenyl(or 2-phenylethyl)-phosphoryl-3-phenylprop-2-yn-1-ols in up to 96% yield. The reaction of diphenylphosphine oxide with 1-alkanoyl-2-phenylacetylenes in the system KOH-THF (20A degrees C) afforded not only adducts at the carbonyl group but also products of double alpha,beta-addition at the triple bond, 2,3-bis(diphenylphosphoryl)-3-phenylpropan-1-ones.