Debromination of 4-bromo-3-(2-substituted aryl) sydnones 1 with sodium borohydride in methanol occurs readily to give good yields of the corresponding parent sydnones 2, except in those cases where the aryl substituent also reacts. The utility of the process for both sydnone purification and the preparation of novel sydnones has been examined briefly.
用
硼氢化钠在
甲醇中对 4-
溴-3-(2-取代芳基)
茚酮 1 进行脱
溴反应很容易得到产率很高的相应母体
茚酮 2,但芳基取代基也发生反应的情况除外。 该工艺在
茚酮纯化和制备新型
茚酮方面的实用性已作了简要研究。