Conclusions
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1.
Methyldichlorophosphine reacts withα-crotonic acid and gives methyl-(β-chIoroformylisopropyl) phosphinic acid chloride.
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2.
The hydrolysis of methyl-(β-chloroformylisopropyl)phosphinic acid chloride gives methyl-(β-carboxyisopropyl)phosphinic acid, the alcoholysis gives the complete ester of this acid; its reaction with acetic anhydride leads to the formation of 2,3-dimethyl-2, 5-dioxo-1, 2-oxaphospholane.
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3.
The reaction of 2, 3-dimethyl-2, 5-dioxo-1, 2-oxaphospholane with ethanol gives the ethyl ester of methyl-(β-carboxyisopropyl)phosphinic acid, the reaction with aniline gives methyl-(β-phenyl-carbamoyl-isopropyl)phosphinic acid.
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4.
The ethyl ester of methyl-(β-carbethoxyisopropyl)phosphinic acid with PCl5 gives methyl-(β-carbethoxyisopropyl)phosphinic acid chloride.
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Literature cited
V. K. Khairullin, T. I. Sobchuk, and A. N. Pudovik, Zh. Obshch. Khim.,37, 709 (1967).
V. K. Khairullin, R. M. Kondrat'eva, and A. N. Pudovik, Zh. Obshch. Khim.,38, 288 (1968).
Beilstein, Berlin,2, 411 (1933).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1166–1168, May, 1969.
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Khairullin, V.K., Dmitrieva, G.V. & Pudovik, A.N. The reaction of methyldichlorophosphine with crotonic acid. Russ Chem Bull 18, 1067–1069 (1969). https://doi.org/10.1007/BF00922875
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DOI: https://doi.org/10.1007/BF00922875