Organophosphorus compounds. Part 163: Reactivity of phosphaalkynes towards in situ-generated titanium imido complexes

Treatment of kinetically stabilized phosphaalkynes 5 in toluene with primary amines 4 in the presence of equimolar amounts of cyclopentadienyltitaniumtrichloride (2) leads to azaphosphatitanacyclobutane species 6. The formation of compounds 6 enables a first insight into the mechanism of the reaction of titanium imides with phosphaalkynes, presented in several recent papers.