handled one-pot synthetic procedure was previously developed for the synthesis of bisphosphinates starting from acyl chlorides. Herein, other trivalent derivatives as acid anhydrides and activated esters were tested to form various bisphosphinates. This modulation of the reactivity can be controlled according to the nature of the acid derivative for the use of sensitive and functionalized substrates
Abstract A convenient and generalizable procedure has been optimized to access to 1-hydroxymethylene-1,1-bisphosphinate compounds. Several alkyl, including an alendronate bisphosphinate analog, and (hetero)aryl compounds were rapidly obtained in satisfying to excellent yields. A side product could be identified as a phosphino-phosphonate isomer and plausible mechanistic pathways are discussed here