A NEW AND EFFECTIVE AMINOMETHYLATION BY THE USE OF<i>N</i>-(<i>p</i>-TOLUENESULFONYLMETHYL)-<i>p</i>-TOLUENESULFONAMIDE AS AN EQUIVALENT OF METHANIMINE. A CONVENIENT PREPARATION OF PYRROLE COMPOUNDS
作者:Hideki Kinoshita、Katsuhiko Inomata、Masatoshi Hayashi、Takeshi Kondoh、Hiroshi Kotake
DOI:10.1246/cl.1986.1033
日期:1986.6.5
N-(p-toluenesulfonylmethyl)-p-toluenesulfonamide was treated with base to generate N-methylene-p-toluenesulfonamide which reacted with a variety of nucleophiles forming the corresponding N-tosyl-aminomethylated compounds in good yields. Furthermore, the N-tosyl-aminomethylated acetals thus obtained were converted into the corresponding N-tosylpyrroles with the aid of acid catalyst in excellent yields.
容易获得的 N-(对甲苯磺酰基甲基)-对甲苯磺酰胺用碱处理以生成 N-亚甲基-对甲苯磺酰胺,其与多种亲核试剂反应以良好的产率形成相应的 N-甲苯磺酰基-氨基甲基化化合物。此外,由此获得的N-甲苯磺酰基-氨基甲基化缩醛在酸催化剂的帮助下以优异的产率转化为相应的N-甲苯磺酰基吡咯。