20999-77-3

Basic information

• Product Name: 1,2-Propanedione, 1-phenyl-, 2-(phenylhydrazone)
• CAS NO: 20999-77-3
• Molecular Formula: C15H14N2O
• Molecular Weight: 238.289
• Mol File: 20999-77-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,2-Propanedione, 1-phenyl-, 2-(phenylhydrazone)(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Propanedione, 1-phenyl-, 2-(phenylhydrazone)(20999-77-3)
• EPA Substance Registry System: 1,2-Propanedione, 1-phenyl-, 2-(phenylhydrazone)(20999-77-3)

Safety Data

• Hazardous Substances Data: 20999-77-3(Hazardous Substances Data)

Upstream product

• 64-17-5 ethanol 
• 90-63-1 (RS)-1-hydroxy-1-phenylpropan-2-one 
• 64-19-7 acetic acid 
• 100-63-0 phenylhydrazine 
• 10488-87-6 ethyl 2-benzoylpropionate 
• 100-34-5 benzene diazonium chloride 
• 2684-02-8 benzenediazonium 
• 579-07-7 1-Phenylpropane-1,2-dione 

Downstream Products

• 400900-22-3 3-benzoyl-1-phenyl-1H-pyrazole-4-carbaldehyde 

Relevant articles and documents

Addition of Semidione Radicals to Arenediazonium Ions: Synthesis of 1,1-Diacyl-2-arylhydrazines

The α-dicarbonyl compounds 1 are selectively reduced to semidione radicals 2 by aqueous Ti3+, via inner-sphere electron transfer (ET).When an equimolar amount of an arenediazonium salt (3) is present, 2 adds to the nitrogen-nitrogen triple bond of 3 to afford the intermediate azo radical cation C, which, depending on the nature of the para substituent of the N-phenyl ring, undergoes rearrangement to a 1,1-diacyl-2-arylhydrazine (4) or preferentially reduction to a hydrazone (5).A mechanism that accounts for both the rearrangement and the substituent effects that are observed is proposed.