Isbell, A. F. published the artcileSynthesis of organophosphorus compounds, Formula: C5H10Cl3O3P, the publication is United States Department of Commerce, Office of Technical Services, AD [ASTIA Document] (1961), 9 pp., database is CAplus.
Monoalkylphosphonates of the type RP(O)(OR’)2(R = R’ = Me, Et, or Bu; R = Ph, R’ = Et; R = PhCH2, R’ = Bu) were treated with Na metal, using either PhCH3 or excess ester as solvent. In all cases, the gas R’H was given off, yields being 0.3-0.5 moles gas/mole ester in PhCH3 and 0.1 or less in excess ester. In addition, white solids were formed; they were insoluble in PhCH3 but soluble in excess ester. Viscosity and non-crystalline character increased with increasing mol. weight of R. These solids were believed to consist in part of RP(O)(OR’)ONa. Other compounds studied were (MeO)3P; (EtO)3P; (BuO)3PO; triethyl α,α-dimethylphosphonoacetate; triethyl phosphonoformate; BuPhP(O)OBu, and Et2P(O)OEt. Attempts were also made to synthesize fluoroalkylphosphonic esters. F3CCl or F3Cl with (BuO)2P(O)Na or (EtO)3P gave no reaction. (EtO)3P(O)CCl3 heated with KF.2H2O gave 83% CHCl3 and a salt-like product. RP(O)(OEt)2 (R = ClCH2 or Cl2CH) heated with anhydrous KF gave no reaction, but Cl3CP(O)(OEt)2 reacted with KF or NaF to give FP(O)(OEt)2, (b47 88.5-89.5°); n27D 1.3710; d27 1.1399.
United States Department of Commerce, Office of Technical Services, AD [ASTIA Document] published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C5H10Cl3O3P, Formula: C5H10Cl3O3P.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics