34823-97-7

Basic information

• Product Name: 3(2H)-Benzofuranone, hydrazone
• CAS NO: 34823-97-7
• Molecular Formula: C8H8N2O
• Molecular Weight: 148.164
• Mol File: 34823-97-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3(2H)-Benzofuranone, hydrazone(CAS DataBase Reference)
• NIST Chemistry Reference: 3(2H)-Benzofuranone, hydrazone(34823-97-7)
• EPA Substance Registry System: 3(2H)-Benzofuranone, hydrazone(34823-97-7)

Safety Data

• Hazardous Substances Data: 34823-97-7(Hazardous Substances Data)

Upstream product

• 49615-93-2 (3-aminobenzo[b]furan-2-yl)phenylmethanone 

Relevant articles and documents

Reaction of 2-acyl-3-aminobenzofurans with hydrazines

While 2-acetyl and 2-benzoyl-3-aminobenzofurans did not react with hydrazine, monomethyl- and N,N-dimethylhydrazine to give the related hydrazones, their 3-N-(p-toluenesulfonyl) derivatives afforded them smoothly in good yields. Depending upon reaction conditions, products arising from hydrazone cyclization to benzofuropyrazoles and/or from furan ring cleavage at the C2-O bond to give 5-(2-hydroxyphenyl)pyrazoles were also formed. The formation of these products depends upon hydrazones configuration and is discussed. Only (E)-isomers appear to undergo furan ring opening. In acidic media at room temperature either the hydrazones or the monomethylhydrazones gave the same related α-azines. Microanalyses, ir, uv, 1H-nmr and ms spectra are in agreement with the proposed structures.