Abstract Phosphonoalkylation of acylchloro-phosphates or-phosphinates in the presence of excess lithium diisopropylamide leads to direct generation of lithiated methylene- diphosphonate anions. This stable type of anion can be either protonated in acidic medium to provide tetrasubstituted methylenediphosphonate or alkylatd. When aliphatic or aromatic aldehydes are added spontaneous formation of vinyl-phosphonates is observed. This ...
![[diethoxyphosphorylmethyl(phenyl)phosphoryl]benzene Structure](https://image.chemsrc.com/caspic/425/58263-57-3.png)
