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Process for the production of aminomalonic acid dinitrile as an aminomalonic acid dinitriltosylate precipitate or as an acetylaminomalodinitrile precipitate
Process for the production of aminomalonic acid dinitrile as an aminomalonic acid dinitriltosylate precipitate or as an acetylaminomalodinitrile precipitate
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机译:制备氨基丙二酸二硝酰甲苯磺酸盐沉淀物或作为乙酰基氨基丙二腈沉淀的氨基丙二酸二腈的方法
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摘要
Process for the production of aminomalonic acid dinitrile from a malonic acid dinitrile compound, such as oximinomalonic acid dinitrile or phenylazomalonic acid dinitrile. The reaction is carried out at an elevated hydrogen pressure in the presence of Raney catalysts and a solvent. When tetrahydrofurane is used as a solvent, the reaction product is precipitated with p-toluene sulfonic acid. When acetic anhydride is used as solvent, the reaction product is precipitated as acetyl aminomalonic acid dinitrile.
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