UNEXPECTED BEHAVIOR OF THE OXIDIZING-AGENT SODIUM M-NITROBENZENESULFONATE - SYNTHESIS OF A NEW CLASS OF -HYDROXY[1]BENZOPYRANO-[4-3-C]PYRIDAZIN-3(2H)-ONES
G. Cignarella et D. Barlocco, UNEXPECTED BEHAVIOR OF THE OXIDIZING-AGENT SODIUM M-NITROBENZENESULFONATE - SYNTHESIS OF A NEW CLASS OF -HYDROXY[1]BENZOPYRANO-[4-3-C]PYRIDAZIN-3(2H)-ONES, Journal of heterocyclic chemistry, 32(1), 1995, pp. 79-80
Sodium m-nitrobenzene sulfonate, widely used in dehydrogenation of 4,5
-dihydro-3(2H)-pyridazinones to their corresponding aromatic derivativ
es, behaves in an unexpected way when ihydro-5H[1]benzopyrano[4,3-c]py
ridazin-3(2H)-ones are employed as substrate. The synthesis of a new c
lass of 5-hydroxy[1]benzopyrano[4,3-c]pyridazin-3(2H)-ones is describe
d.