Synthesis and unexpected reactions of 2-Hydroxy-3-pyridinylacetic hydrazides. Formation of 2<i>H</i>-Pyrrolo[2,3-<i>b</i>]pyridin-2-ones
作者:Christopher A. Teleha、Roger A. Greenberg、Robert J. Chorvat
DOI:10.1002/jhet.5570350127
日期:1998.1
Treatment of 2-hydroxy-3-pyridinylacetic hydrazides under mild mesylation conditions provided 2H-pyrrolo[2,3-b]pyridin-2-ones as unexpected products. This rearrangement is believed to result from an intramolecular attack of the hydrazide on a reactive pyridinium species formed under the reaction conditions.
在温和的甲磺酰化条件下处理2-羟基-3-吡啶基乙酰肼提供了2H-吡咯并[2,3 - b ]吡啶-2-酮作为预料不到的产物。据信这种重排是由于酰肼对在反应条件下形成的反应性吡啶鎓类物质的分子内攻击所引起的。