在任选取代的通式I 1,2,3,4-四氢-9-氰基甲基咔唑-1-酮的制备方法，其中R是氢，卤素，烷基或烷氧基是指被任选取代的1的氰甲基， CH2 - - 1,2,3,4-四氢咔唑-1-酮通式II 其中R具有上述含义，式II与通式的Cyanmethylierungsmittel原料III R'是CN的（III），其中 R'是卤素或下式基团R-SO2-O-，并且R 2是烷基，苯基或取代的苯基，在有水的两相系统和在强碱和已知的相转移催化剂的存在下，水不混溶的有机溶剂中反应。

In a method for the preparation of optionally substituted 1,2,3,4-tetrahydro-9-cyanomethyl-carbazol-1-ones of the formula I allgemainen wherein R is hydrogen, halogen, alkyl or alkoxy by cyanomethylation of optionally substituted 1,2,3,4-tetrahydro-carbazol-1-ones of the general formula II wherein R has the abovementioned meanings, the starting material of formula 11 with a Cyanmethylierungsmittel of the general formula III is wherein R ^{1 is} halogen or a radical of the formula R ² -SO ₂ -O-and R ² represents alkyl, phenyl or substituted phenyl, in a two phase system of water and a water-immiscible organic solvent in the presence of a strong base and a known phase transfer catalyst converts.