Part of #A Conveniet One Step Synthesis Of Pyrazolo[5,4-d] Benzopyranes# :
Publishing year : 2009
Conference : National Symposium on Chemical Engineering
Number of pages : 5
Abstract: Pyrazolo [5,4-d] benzopyranes have been synthesized in one step in a good yield by the reaction of 2-pyridazine-5-ones with orthohydroxybenzalaldehydes in the presence of hydrochloric acid.