An improved process is provided for the production of thioalkyl aniline compounds, which are known and useful as intermediates for producing anthelmintic, antibacterial and fungicidal benzimidazole compounds. According to the process a thiocyano aniline compound, an alcohol and an alkali metal cyanide are reacted, with the additional presence of an alkyl halide, and also with a dipolar aprotic solvent, or in the preence of an immiscible solvent and a phase transfer catalyst. A further improvement consists of providing said phase transfer catalyst as a polymer-bound catalyst.
本发明提供了一种生产
硫代烷基
苯胺化合物的改进工艺,
硫代烷基
苯胺化合物是生产驱虫、抗菌和杀真菌的
苯并咪唑化合物的已知和有用的中间体。根据该工艺,
硫代
氰基
苯胺化合物、醇和碱
金属
氰化物在烷基卤化物和双极性非烷基溶剂的作用下,或在不相溶溶剂和相转移催化剂的作用下发生反应。进一步的改进是将所述相转移催化剂作为聚合物结合催化剂。