139174-95-1

Basic information

• Product Name: ethyl 5-<2-chloro-4-phenylazo>-2,4-bis(ethoxycarbonyl)-3-thiopheneacetate
• CAS NO: 139174-95-1
• Molecular Weight: 556.037
• Mol File: 139174-95-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: ethyl 5-<2-chloro-4-phenylazo>-2,4-bis(ethoxycarbonyl)-3-thiopheneacetate(CAS DataBase Reference)
• NIST Chemistry Reference: ethyl 5-<2-chloro-4-phenylazo>-2,4-bis(ethoxycarbonyl)-3-thiopheneacetate(139174-95-1)
• EPA Substance Registry System: ethyl 5-<2-chloro-4-phenylazo>-2,4-bis(ethoxycarbonyl)-3-thiopheneacetate(139174-95-1)

Safety Data

• Hazardous Substances Data: 139174-95-1(Hazardous Substances Data)

Upstream product

• 58168-14-2 ethyl 2-amino-3,5-dicarbethoxythiophene-4-acetate 
• 92-00-2 m-chloro-N,N-bis-β-hydroxyethylaniline 
• 105-56-6 ethyl 2-cyanoacetate 
• 105-50-0 diethyl 1,3-acetonedicarboxylate 

Relevant articles and documents

Synthesis and Application of 5-Arylazothiophene Derivatives

Synthesis of 5-(hetoarylazo or arylazo)thiophene derivatives (6a-g) was achieved by diazotization of ethyl 5-amino-2,4-bis(ethoxycarbonyl)-3-thiopheneacetate (3) using nitrosyl hydrogensulfate, coupling with suitable heterocyclic hydroxy and N,N- dialkyl-substituted arylamines which resulted in thiophene azo dyes.The key intermediate 3, used as the diazonium component, was synthesized in one pot and in excellent yield from diethyl 3-oxopentanedioate, sulfur and ethyl cyanoacetate following the Gewald Synthesis.Tthe dyes when applied as disperse dyes on polyester fibres gave excellent results.