39684-36-1

Basic information

• Product Name: 3-THIENYLGLYOXYLIC ACID
• Synonyms: 3-THIENYLGLYOXYLIC ACID;ALPHA-OXO-3-THIOPHENEACETIC ACID
• CAS NO: 39684-36-1
• Molecular Formula: C₆H₄O₃S
• Molecular Weight: 156.16
• Mol File: 39684-36-1.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 274.2 °C at 760 mmHg
• Flash Point: 119.7 °C
• Appearance: /
• Density: 1.486 g/cm³
• Vapor Pressure: 0.00265mmHg at 25°C
• Refractive Index: 1.605
• CAS DataBase Reference: 3-THIENYLGLYOXYLIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: 3-THIENYLGLYOXYLIC ACID(39684-36-1)
• EPA Substance Registry System: 3-THIENYLGLYOXYLIC ACID(39684-36-1)

Safety Data

• Hazardous Substances Data: 39684-36-1(Hazardous Substances Data)

Usage

InChI:InChI=1/C6H4O3S/c7-5(6(8)9)4-1-2-10-3-4/h1-3H,(H,8,9)

Upstream product

• 498-62-4 3-thiophene carboxaldehyde 
• 82069-41-8 2-(thiophen-3-yl)-2-((trimethylsilyl)oxy)acetonitrile 
• 104749-67-9 methyl 2-oxo-2-(thiophen-3-yl)acetate 
• 53091-09-1 ethyl 2-oxo-2-(thiophen-3-yl)acetate 
• 1468-83-3 1-(thiophen-3-yl)-ethanone 

Downstream Products

• 26453-81-6 di(thiophen-3-yl)methanone 
• 117177-65-8 N-Benzyl-(3-thienyl)glyoxylohydroxamsaeure 

Relevant articles and documents

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Minisci aroylation of N-heterocycles using choline persulfate in water under mild conditions

Metal persulfate mediated thermal oxidative organic transformations invariably require a higher temperature and frequently use an organic solvent. The objective of this work was to develop persulfate mediated oxidative transformations that can be performed nearly at room temperature using water as a solvent. This report describes modified Minisci aroylation of isoquinolines with arylglyoxylic acids using choline persulfate and its pre-composition (choline acetate and K2S2O8) in water at 40 °C. A few other nitrogen heterocycles were also utilized affording various aroylated products in good to excellent yields. Unlike metal persulfate that could produce metal salt byproducts, a key feature of the chemistry reported herein includes the use of environmentally benign choline persulfate containing biodegradable choline as a counter-cation, the Minisci reaction demonstrated at 40 °C in water as the only solvent, and unconventional activation of persulfate. This journal is

Copper/Persulfate-Promoted Oxidative Decarboxylative C?H Acylation of Pyrazolones with α-Oxocarboxylic Acids: Direct Access to 4-Acylpyrazolones under Mild Conditions

A facile and efficient oxidative C?H acylation of N-substituted pyrazolones using α-oxocarboxylic acids as an acyl group source was developed. A combination of Cu(OAc)2 and K2S2O8 enables the reaction to proceed smoothly under air and provides a wide array of 4-acylpyrazolone products in moderate to excellent yields. The mechanism of this transformation is believed to proceed via a copper-induced decarboxylation to form the acyl-copper species. This method provides a convenient and useful route for a direct installation of an acyl moiety into bioactive pyrazolone derivatives, which can be further utilized in many applications. (Figure presented.).