申请人:The Ohio State University Research Foundation
公开号:US03985756A1
公开(公告)日:1976-10-12
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 ortho-alkylated aniline. The aniline 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碳
硫化物反应形成氮
硫杂环
氯化物,再将氮
硫杂环
氯化物与强碱反应,形成在2-位上被氢碳基-S-烃基
硫醚基取代的
苯胺。这些邻位取代的
硫醚化合物可以通过去
硫还原剂(如Raney
镍等)还原,形成邻位烷基化
苯胺。
苯胺可以是
氨基吡啶。氮
硫杂环盐和
硫醚中间体产品可以被分离和回收。如果需要,
硫醚化合物可以还原成邻位烷基化
苯胺产品,这些产品在制造
染料、
除草剂等方面具有广泛的用途。