Coutrot, Philippe published the artcileSynthesis of diethyl 1,1-dichloroalkane- and 1-chloroalkanephosphonates, Computed Properties of 866-23-9, the publication is Synthesis (1977), 615-17, database is CAplus.
RCCl2P(O)(OEt)2 (I, R = Me, Et, Pr, Bu, CH2:CHCH2, MeCH:CHCH2, MeOCH2) and RR1CClP(O)(OEt)2 (II, R = Me, Et, Pr, Bu; R1 = H, Me, Et, Bu, CH2:CHCH2, Cl(CH2)3) (11 compounds) were prepared in 42-81 and 66-89% yields resp. Thus, alkylation of (EtO)2P(O)CCl2Li with RBr in presence of PO(NMe2)3 at -80° gave I. Lithiation of I followed by alkylation with R1X (X = Br, iodo) gave II.
Synthesis 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, Computed Properties of 866-23-9.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics