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AssigneeMitsui Toatsu Chemicals, Inc.
InventorsRyuichi Mita, Chojiro Higuchi, Toshio Kato, Nobuyuki Kawashima, Akihiro Yamaguchi, Shosuke Nagai, Takao Takano
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A process for producing aziridine-2-carboxylic acid or its salts is provided which comprises treating an alpha-halogeno-beta-aminopropionitrile or its mineral acid salt with an alkali or alkaline earth metal hydroxide in water or in a water-containing organic solvent. In a preferred embodiment, aziridine-2-carboxylic acid or its salt is produced by treating the reaction mixture containing an alpha-halogeno-beta-aminopropionitrile obtained by reacting an alpha, beta-dihalogenopropionitrile or an alpha-halogenoacrylonitrile with ammonia, with an alkali or alkaline earth metal hydroxide in the presence of water without isolating the alpha-halogeno-beta-aminopropionitrile from the reaction mixture beforehand.
A process for producing aziridine-2-carboxylic acid salt which comprises a step wherein an .alpha.-halogeno-.beta.-aminopropionitrile-containing reaction mixture obtained by reacting an .alpha.,.beta.-dihalogenopropionitrile or an .alpha.-halogenoacrylonitrile with ammonia in water, an organic solvent or a mixture of water and an organic solvent at a temperature of -40.degree. to 30.degree. C., is treated with an alkali or alkaline earth metal hydroxide.
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