A Robust Methodology for the Synthesis of Phosphorothioates, Phosphinothioates and Phosphonothioates
作者:David J. Jones、Eileen M. O'Leary、Timothy P. O'Sullivan
DOI:10.1002/adsc.202000059
日期:2020.4.27
A robust methodology for the synthesis of phosphorothioates, phosphinothioates and phosphonothioates, including those bearing low molecular weight S‐alkyl side‐chains, is presented. Application of the “caesium effect” in conjunction with the disulfide 3,3’‐dithiobis(propionitrile), which acts as a shelf‐stable sulfur source, avoids recourse to malodorous alkanethiols and toxic P−Cl precursors. A diverse
The reaction between phosphorothioic and thiocarboxylic acids and O-alkyl-N,N-dicyclohexylisoureas has been found to give the corresponding phosphorothiolates and thiolocarboxylates in high yields (65-95%), providing a new method for the thiophosphorylation and thiocarboxylation of alcohols.