Preparation and reactions of ethyl 4-bromo-2,3-dioxobutyrate 2-arylhydrazones and 4-bromo-2,3-dioxo-1-phenylbutanal 2-arylhydrazones.
D002087:Butyrates / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D006834:Hydrazines / Q000138:chemical synthesis; D011720:Pyrazoles / Q000138:chemical synthesis*
D002087:Butyrates; D006834:Hydrazines; D011720:Pyrazoles