5-Phenylpyridazinones-A serendipitous route from coumarins
作者:Manjunath D. Ghate、Vithal B. Jadhav、Lokesh A. Shastri、Manohar V. Kulkarni、Geetha M. Kulkarni、Chih-Hau Chen、Chung-Ming Sun
DOI:10.1016/j.tetlet.2008.05.015
日期:2008.7
A new route of the ring transformation has been discovered during the reaction of 4-bromomethylcoumarins with hydrazine hydrate leading to the formation of pharmacologically important pyridazinones in a single step with very high yields. These so obtained pyridazinones have the potential for further functional group interconversions.