New routes to free and coordinated 1H-diphosphirenes
Résumé
Diphosphirenium salt 1 reacts with LiAlH4 leading to P-hydrophosphaalkene 2, which on treatment with a catalytic amount of BF3·OEt2 affords 1H-diphosphirene 3, while with a stoichiometric amount of W(CO)5(thf), complex 4 is obtained.