Metalation of<i>t</i>-butyl sulfoxides, sulfones and sulfonamides of pyridazine and pyrazine. Metalation of diazines. XX
作者:Alain Turck、Nelly Plé、Paméla Pollet、Guy Quéguiner
DOI:10.1002/jhet.5570350228
日期:1998.3
groups for metalation has been tested. Various functionalized products were obtained in good yields. In the case of 3-tert-butylsulfinyl-6-methoxypyridazine, the metalation was regioselective in ortho to the sulfinyl group. The metalation of 2-tert-butylsulfinyl and 2-tert-butylsulfonylpyrazine gave low to moderate yields. Synthesis of diazinesulfonamides were improved and the metalation of N-tert-
在哒嗪系列中,已经测试了使用叔丁基亚磺酰基和叔丁基磺酰基作为金属的邻位导向基团。以高收率获得了各种功能化产品。在3-的情况下,叔丁基亚-6- methoxypyridazine,所述金属化中是区域选择性的邻位的亚磺酰基。2-叔丁基亚磺酰基和2-叔丁基磺酰基吡嗪的金属化得到低至中等的产率。改进了二嗪磺酰胺的合成,并实现了N-叔丁基磺酰胺基吡嗪的金属化。