Process for making methylphosphonic dichloride

Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus halides

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C07F 942

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active

048714860

ABSTRACT:
Disclosed is a process for producing methylphosphonic dichloride comprising reacting dimethyl methylphosphonate with a chlorinating agent selected from the group consisting of thionyl chloride and phosgene in the presence of a catalytic amount of an inorganic halide selected from the group consisting of ammonium halide and metallic halides where the metal cation is selected from the metals of Groups IA, IIA, IIIB, IVB, VB, VIB, VIIB, VIIIB, IB, IIB and IIIA of the Periodic Table.

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Chemicals Abstracts 92:42113u.
K. Moednitzer and R. E. Miller, "A Convenient One-Step, High Yield Preparation of Methylphosphonyl Dichloride From Dimethyl Memthylphosphonate", Syng. React. Inorg. Metal-Org. Chem. 4(5), pp. 417-427 (1974).

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