A novel rearrangement reaction. A single-step conversion of tetrahydro-1-isoquinolinecarboxylic acids into 1-isoquinolones
作者:Claude Vaccher、Pascal Berthelot、Michel Debaert、Didier Barbry
DOI:10.1002/jhet.5570210455
日期:1984.7
The preparation of 2-acyl-6,7-dimethoxy-1,2,3,4-tetrahydro-1-isoquinolinecarboxamides is described. The mixed anhydride of 2-acyl-6,7-dimethoxy-1,2,3,4-tetrahydro-1-isoquinolinecarboxylic acid with isobutyl chloroformate was reacted with the corresponding hydrazines at — 10, — 15°. Besides those compounds, isoquinolones occur through a new side reaction. The structure of those products was established
描述了2-酰基-6,7-二甲氧基-1,2,3,4-四氢-1-异喹啉羧酰胺的制备。使2-酰基-6,7-二甲氧基-1,2,3,4-四氢-1-异喹啉羧酸与氯甲酸异丁酯的混合酸酐与相应的肼在-10,-15°下反应。除这些化合物外,异喹诺酮还会通过新的副反应发生。这些产物的结构通过13 C和1 H nmr和质谱确定。讨论了反应的可能机理。