Journal of Organic Chemistry p. 4367 - 4370 (1983)
Update date:2022-08-03
Topics:
Grob Schmidt, Diane
Zimmer, Hans
The ring transformation of 3-(arylmethylene)-2,4(3H,5H)-furandiones (2) into the corresponding pyrazolones (3) is described.The conversion with selected hydrazines proceeds regioselectively to form a uniquely substituted pyrazolone system (3) as the major
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