M. Elmkadmi et al., FROM SILYLPHOSPHANES AND 2-BENZAL-1-INDANONES TO NEW PHOSPHANES, PHOSPHANE OXIDES OR SULFIDES AND PHOSPHONIUM SALTS, Phosphorus, sulfur and silicon and the related elements, 116, 1996, pp. 109-121
Diethyl(trimethylsilyl)phosphane 1 reacts with the conjugated carbonyl
moiety of 2-benzal-1-indanones 2-6 to afford exclusively 1,4-adducts
2a-6a. Subsequent oxydation or sulfuration of most of the adducts lead
s to the corresponding phosphane oxides or sulfides. Further hydrolysi
s or reaction with HCl involves the desilylation with the formation of
new (thio)phosphorylated ketones or phosphonium salts.