Reactivity of a 1,3,2-diazaphosphinine toward propargyl-phosphine derivatives and activated alkenes
2,5-Diphenylphosphole and diphenylphosphino derivatives 2, 3 of 1-phenylpropargyl were prepared by reacting the corresponding diphenylphos-phinolithium and 2,5-diphospholyl lithium salts with (3-bromo-prop-1-ynyl)-benzene in THF at low temperature. Sulfur