93831-08-4

Basic information

• Product Name: 5-Ethyl-1-phenyl-1H-[1,2,4]triazole-3-carboxylic acid methyl ester
• CAS NO: 93831-08-4
• Molecular Weight: 231.254
• Mol File: 93831-08-4.mol

Chemical Properties

• CAS DataBase Reference: 5-Ethyl-1-phenyl-1H-[1,2,4]triazole-3-carboxylic acid methyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 5-Ethyl-1-phenyl-1H-[1,2,4]triazole-3-carboxylic acid methyl ester(93831-08-4)
• EPA Substance Registry System: 5-Ethyl-1-phenyl-1H-[1,2,4]triazole-3-carboxylic acid methyl ester(93831-08-4)

Safety Data

• Hazardous Substances Data: 93831-08-4(Hazardous Substances Data)

Upstream product

• 74328-35-1 4-(1-ethyl-propenyl)-morpholine 
• 93831-03-9 Methyl azido-(phenylhydrazono)-acetate 
• 7182-09-4 N-(1-propenyl)piperidine 

Relevant articles and documents

Ketone Enamines as Dipolarophiles towards C-Azidohydrazones

The reaction of methyl azido(phenylhydrazono)acetate (1) with the enamines (4)-(7) leads to different kinds of ring-closed products, namely 1,2,4-triazines (8)-(10), 1,2,3-triazoles (12)-(15), and 1,2,4-triazoles (16)-(19).An open-chain azo compound (20) is also formed.In one case, an intermediate 4,5-dihydro-1H-1,2,3-triazole (11) has been isolated.A mechanistic picture is proposed involving preliminary cycloaddition of the azido group to the enamine and subsequent reaction of the 4,5-dihydro-1H-1,2,3-triazoles according to various concurrent pathways.

The Reaction of C-Azidohydrazones with Enamines

Methyl azido(phenylhydrazono)acetate (1) reacts with variously substituted enamines (4) - (7) to give product mixtures including 1,4,5,6-tetrahydro-1,2,4-triazines (8) - (13) and 1,2,4-triazoles (14) - (16).A mechanism is proposed involving a preliminary