84282-65-5

Upstream product

• 84304-74-5 Trifluoro-acetic acid N'-(2,4-dichloro-phenyl)-hydrazide 
• 84282-55-3 3-(2,4-Dichloro-phenyl)-5-trifluoromethyl-3H-[1,3,4]oxadiazol-2-one 
• 124-40-3 dimethyl amine 

Relevant academic research and scientific papers

Preparation of 2-phenylsemicarbazides

2-Phenylsemicarbazides are prepared by a multi-step process involving: (a) treating a phenylhydrazine, or salt thereof, with a chloroformate; (b) adding phosgene; (c) treating the resulting product with an amine; and (d) hydrolyzing the resulting acylated semicarbazide. The reaction can proceed through a Δ2 -1,3,4-oxadiazolin-5-one intermediate formed with heating in step (b). Certain of the products are novel compounds.