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-氯苯胺与非酮二烃硫化物反应,形成_azasulfonium_氯化物,将_azasulfonium_氯化物与强碱反应,在2位上带有烃基-S-烃基硫醚基团的苯胺。这种正构硫醚化合物可以用脱硫还原剂如Raney镍等还原,形成正构烷基化苯胺。苯胺可以是氨基吡啶。可以分离和回收_azasulfonium_盐和硫醚中间体。如果需要,硫醚化合物可以还原形成正构烷基化苯胺产品,这些产品可用作多种用途的中间体,包括用于制造染料、除草剂等。