AN ALKYLPHOSPHONYL NUCLEOPHILIC-SUBSTITUTION REACTION THAT PROCEEDS BY AN ELIMINATION ADDITION MECHANISM WITH AN ALKYLIDINEOXOPHOSPHORANE (PHOSPHENE) INTERMEDIATE
Mjp. Harger et Bt. Hurman, AN ALKYLPHOSPHONYL NUCLEOPHILIC-SUBSTITUTION REACTION THAT PROCEEDS BY AN ELIMINATION ADDITION MECHANISM WITH AN ALKYLIDINEOXOPHOSPHORANE (PHOSPHENE) INTERMEDIATE, Journal of the Chemical Society, Chemical Communications, (16), 1995, pp. 1701-1702
For the phosphonamidic chloride R(2)CHP(O)(NEt(2))Cl having R(2)CH = 9
-fluorenyl, substitution at phosphorus is unexpectedly fast with Et(2)
NH as the nucleophile, and discriminates less than is usual between co
mpeting Me(2)NH and Et(2)NH nucleophiles; such behaviour is consistent
with an elimination-addition mechanism and a fluorenylidineoxophospho
rane intermediate 8.