2-Aza-4-(alkoxycarbonyl)spiro[4,5]-decan-3-one and a process for the production of it, starting either from cyclohexylidene malonic acid esters or cyclohexylidene cyanoalkylates. The cyclohexylidene malonic acid ester is reacted with hydrocyanic acid in the presence of a catalytic amount of alkali cyanide or with a stoichiometric amount of alkali cyanide, in an alcohol, and subsequently treated with an acid. The resultant (1-cyanocyclohexyl) malonic acid dialkyl ester is converted by catalytic hydrogenation into the product. The cyclohexylidene cyanoalkylate is reacted with a stoichiometric amount of alkali cyanide, in an alcohol or with hydrocyanic acid in the presence of a catalytic amount of an alkali cyanide. The resultant (1-cyanocyclohexyl)-cyanoacetic acid alkyl ester is reacted in an alcohol in an acid to provide (1-cyanocyclohexyl) malonic acid dialkyl ester. The later ester is converted by catalytic hydrogenation into the product. Process of using the product for the production of 1-(aminomethyl)cyclohexane acetic acid by converting the product with HCl or sulfuric acid at an elevated temperature.
2-Aza-4-(烷氧羰基)螺[4,5]-
癸烷-3-酮及其生产方法,可以从
环己烯基
丙二酸酯或
环己烯基
氰烷酸酯出发。将
环己烯基
丙二酸酯与
氢氰酸在碱性
氰化物的催化剂存在下或与等量的碱性
氰化物在醇中反应,然后用酸处理。所得的(1-
氰基环己基)
丙二酸二烷基酯经催化氢化转化为产物。
环己烯基
氰烷酸酯与等量的碱性
氰化物在醇中反应,或者在碱性
氰化物的催化剂存在下与
氢氰酸反应。所得的(1-
氰基环己基)-
氰乙酸烷基酯在酸性条件下在醇中反应,形成(1-
氰基环己基)
丙二酸二烷基酯。后者经催化氢化转化为产物。使用该产物生产1-(
氨甲基)
环己烷乙酸的方法是将产物与HCl或
硫酸在高温下反应。