Abstract:
2-(5-Methyl-2-phenyl-2-1,2,3-diazaphosphol-4-yl)-4H-benzo[d]-1,3, 2-dioxaphosphorin-4-one 1 readily reacts with hexafluoroacetone, mesoxalic acid diethyl ester, trifluoropyruvic acid ethyl ester and chloral to give 2-(5-methyl-2-phenyl-2H-1,2,3-dizaphosphole-4-yl)-derivatives of 1,3,2- and 1,4,2-dioxaphosphepines. © 2013 Copyright Taylor and Francis Group, LLC.