91632-74-5

Basic information

• Product Name: 3-Butenoic acid, 2-[(3,5-dimethylphenyl)methylhydrazono]-4-(4-methoxyphenyl)-, methyl ester
• CAS NO: 91632-74-5
• Molecular Formula: C21H24N2O3
• Molecular Weight: 352.433
• Mol File: 91632-74-5.mol

Chemical Properties

• CAS DataBase Reference: 3-Butenoic acid, 2-[(3,5-dimethylphenyl)methylhydrazono]-4-(4-methoxyphenyl)-, methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 3-Butenoic acid, 2-[(3,5-dimethylphenyl)methylhydrazono]-4-(4-methoxyphenyl)-, methyl ester(91632-74-5)
• EPA Substance Registry System: 3-Butenoic acid, 2-[(3,5-dimethylphenyl)methylhydrazono]-4-(4-methoxyphenyl)-, methyl ester(91632-74-5)

Safety Data

• Hazardous Substances Data: 91632-74-5(Hazardous Substances Data)

Upstream product

• 105213-31-8 (E)-methyl 4-(4-methoxyphenyl)-2-oxobut-3-enoate 
• 80398-80-7 N-methyl N-(3,5-dimethylphenyl)hydrazine 

Downstream Products

• 91632-78-9 methyl 3-<2,4-dimethyl-6-(methylamino)phenyl>-4-(4-methoxyphenyl)-2-oxo-3-butenoate 

Relevant articles and documents

Rearrangement of Arylhydrazones of α,β-Unsaturated Carbonyl Compounds in Polyphosphoric Acid. 6

The reactions of a series of N-methyl-N-arylhydrazones of α,β-unsaturated carbonyl compounds 1 with hot polyphosphoric acid are described.Three main courses were observed, depending on the structure of the carbonyl portion of the substrate.Unsaturated α-oxo ester hydrazones (1a-c) rearranged to give substituted 3--2-oxo-3-butenoic acid esters (2a-c); the reaction mechanism strictly resembles the initial steps of the Fischer indole synthesis.Unsaturated aldehyde hydrazones alternatively gave either the di-3-indolylmethane derivatives (3a,b) or the amino nitriles (4a-c).The first process develops through intermediates structurally similar to 2; the latter was demonstrated to be exclusively intramolecular.