58038-06-5Relevant articles and documents
AN EFFICIENT METHOD FOR THE CONVERSION OF ARYLHYDRAZINES INTO 2-ARYL-4,4-DIALKYLSEMICARBAZIDES
Pilgram, K. H.
, p. 697 - 706 (2007/10/02)
Arylhydrazines are converted into 2-aryl-4,4-dialkylsemicarbazides by subsequent reaction with chloroformate, phosgene, dialkylamine, and alkaline hydrolysis.
Preparation of 2-phenylsemicarbazides
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, (2008/06/13)
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.