21761-80-8

Basic information

• Product Name: 3-thia-pentane-1,2,4,5-tetracarboxylic acid tetraethyl ester
• CAS NO: 21761-80-8
• Molecular Weight: 378.444
• Mol File: 21761-80-8.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 3-thia-pentane-1,2,4,5-tetracarboxylic acid tetraethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 3-thia-pentane-1,2,4,5-tetracarboxylic acid tetraethyl ester(21761-80-8)
• EPA Substance Registry System: 3-thia-pentane-1,2,4,5-tetracarboxylic acid tetraethyl ester(21761-80-8)

Safety Data

• Hazardous Substances Data: 21761-80-8(Hazardous Substances Data)

Upstream product

• 23060-14-2 diethyl 2-mercaptosuccinate 
• 51838-02-9 2-cyano-N-(2-phenylethyl)ethanamide 
• 623-91-6 diethyl Fumarate 

Relevant articles and documents

High regioselectivity in the heterocyclization of β-oxonitriles to 4-oxothiazolidines: X-ray structure proof

Base-catalyzed reactions of β-oxonitriles 1 with diethyl mercaptosuccinate favour heterocyclization to afford 2-alkylidene-4-oxothiazolidines 3, rather than 2-alkylidene-4-oxo-1,3-thiazinanes 4. The observed regioselectivity is based on spectroscopic and experimental evidence, including a single-crystal X-ray structure determination.