申请人:The Ohio State University Research Foundation
公开号:US04035375A1
公开(公告)日:1977-07-12
Preparing ortho-substituted anilines by reacting an N-chloroaniline with a non-carbonylic di-hydrocarbon sulfide to form an azasulfonium chloride, reacting the azasulfonium chloride with a strong base to form an aniline substituted in the 2-position with a hydrocarbon-S-hydrocarbyl thio-ether group. The ortho-substituted thio-ether compounds can be reduced with a de-sulfurizing reducing agent such as Raney nickel or the like to form the orthoalkylated aniline. The analine may be an amino-pyridine. The azasulfonium salt and thio-ether intermediate products can be isolated and recovered. If desired, the thio-ether compounds can be reduced to form ortho-alkylated aniline products which are useful as intermediates for a wide variety of purposes, including their uses in making dyes, herbicides, and the like.
通过将N-氯苯胺与非羰基二氢硫化碳化物反应,形成一个氮硫杂环氯化物,然后再将该杂环氯化物与强碱反应,从而形成一个在2位被氢碳-硫-碳基基团取代的苯胺。这些邻位取代的硫醚化合物可以用去硫化还原剂(例如Raney镍等)还原为邻烷基化苯胺。苯胺可以是氨基吡啶。可以分离和回收氮硫杂环盐和硫醚中间体产品。如果需要,可以将硫醚化合物还原为有用的邻烷基化苯胺中间体,用于多种目的,包括制造染料、除草剂等。