Synthesis of Unsymmetrical Difluoromethylene Bisphosphonates
作者:Jianyun Guo、Pascal Balić、Vladimir S. Borodkin、Dmitri V. Filippov、Jeroen D. C. Codée
DOI:10.1021/acs.orglett.3c04211
日期:2024.1.26
We demonstrate the use of the symmetrical diethyl(dimethyl)difluoromethylene bisphosphonate reagent for the synthesis of terminal and unsymmetrical difluoromethylene bisphosphonates, close analogues of biologically important molecules. The difference in reactivity of the methyl and ethyl groups in the symmetrical diethyl(dimthyl)difluoromethylene bisphosphonate is exploited in a stepwise demethylation–condensation