A NEW DIRECT METHOD FOR INTRODUCING 2-(2,4,6-TRI-t-BUTYLPHENYL)-2-PHOSPHAVINYLIDENE GROUP. FORMATION OF 1-PHOSPHA- AND 1,3-DIPHOSPHA-ALLENES

Article abstract of DOI:10.1016/S0040-4039(01)80630-4

2-Phosphavinylidene group was introduced by the corresponding trimethylsilyllithio compound toward carbonyl compounds to give 1-phosphaallenes, whereas 1,3-diphosphaallene was prepared by the reaction of 1-chloro-2-phosphavinyllithium toward a phosphinous chloride followed by dehydrochlorination.