Pyridazine chemistry. Part 28. Synthesis of pyrazolo- and isoxazolo-pyridazines starting from 5-aminopyridazin-4-yl aryl ketones
Abstract
Procedures for the preparation of 3-arylpyrazolo[3,4-d]pyridazines [e.g.(6)] as well as 1- or 5- substituted derivatives thereof [(8a), (8b), (7a), and (7b)] and 3-arylisoxazolo [4,5-d]pyridazines [e.g. (11)] are reported.