One-Pot Preparation of 6-Substituted 3(2<i>H</i>)-Pyridazinones from Ketones
作者:W. J. Coates、A. Mckillop
DOI:10.1055/s-1993-25861
日期:——
A one-pot process for the preparation of 6-phenyl-3(2H)-pyridazinone from acetophenone and glyoxylic acid has been investigated and shown to have wide utility in the preparation of 6- and 5,6-substituted 3(2H)-pyridazinones. Limitations to the process encountered with 2′-hydroxyacetophenone and with basic heteroaromatic ketones have been overcome, and the processes described offer the rapid and efficient synthesis of many 6-substituted pyridazinones from readily available ketones.