hydrazidicazidesrearrange to semicarbazides. In trifluoroacetic acid, both trifluoroacetyl semicarbazide and the parent semicarbazide are isolated, and the variation in yield with the nature of the hydrazidicazide has been investigated. We have also demonstrated, by use of an optically active hydrazidicazide substrate, that the migrating group in the aziderearrangement retains its configuration
Preparation of Aryl Hydrazonates and 1,2-Diacylhydrazines by Phase Transfer Catalysis
作者:Ahmad Sami Shawali、Hamdi Mahmoud Hassaneen、Richard Pagni、Mourad Sherif Sherif
DOI:10.1246/bcsj.54.2545
日期:1981.8
A series of aryl hydrazonates has been prepared in excellent yield (>90%) by phase-transfercatalysis technique from the corresponding phenol and hydrazonoyl bromides in dichloromethane in the presence of tetrabutylammonium iodide. 1,2-Diacyl derivatives of arylhydrazines were also prepared by the same technique using carboxylic acids in place of phenols.