Teulade, Marie Paule published the artcileα-Lithiated O,O-diethyl [chloro(trimethylsilyl)methyl]phosphonate. I. Preparation and properties, Recommanded Product: Diethyltrichloromethylphosphonate, the publication is Journal of Organometallic Chemistry (1988), 338(3), 295-303, database is CAplus.
Silylation of either (EtO)2P(O)CH2Cl or (EtO)2P(O)CCl3 in the presence of excess BuLi leads to the quant. generation of (EtO)2P(O)CClLiSiMe3. This stable type of anion can be protonated, deuterated, or alkylated. Compounds thus obtained can be desilylated in basic medium, or used for the preparation of α-bromo and α-iodo phosphonates after halogen-metal exchange. E.g., treating (EtO)2P(O)CRClSiMe3 (R = Me, Et, Pr, allyl) with BuLi, then 1,2-diiodoethane or 1,2-dibromoethane gave (EtO)2P(O)CRXSiMe3 (X = iodo, Br, resp.). Condensation with aliphatic and aromatic aldehydes gives vinylphosphonates without stereochem. control.
Journal of Organometallic Chemistry 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 C9H9BrO2, Recommanded Product: Diethyltrichloromethylphosphonate.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics