Oxygen heterocycles. Part XIV. Hydroxylated 3-aryl- and 3-pyridyl-coumarins
Abstract
A number of new 3-aryl- and 3-pyridyl-coumarins bearing one or several phenol groups on their benzene rings have been prepared from the appropriate 2-o-methoxyarylated 1-aryl- and 1-pyridyl-acrylonitriles by means of the pyridine hydrochloride cyclisation method.