132884-96-9Relevant academic research and scientific papers
Synthesis of 1-phosphacycloalkene P-M(CO)5 complexes (M = Cr, W) by intramolecular phospha-Wittig reactions
Marinetti, Angela,Le Floch, Pascal,Mathey, Fran?ois
, p. 1190 - 1195 (2008/10/08)
Intramolecular phospha-Wittig reactions have been used to prepare 1-phosphacyclopentene and 1-phosphacyclohexene complexes with M = Cr(CO)5 or W(CO)5. These complexes are unstable when the P=C double bond is substituted by a phenyl and isolable with a methyl substituent. In this last case, a slow dimerization occurs via a P-H + P=C intermolecular addition after partial isomerization of the 1-phosphacycloalkene into the corresponding secondary vinylphosphine complex. Intramolecular phospha-Wittig reactions fail for the synthesis of 1-phosphacyclopropene and 1-phosphacyclobutene complexes.
