Add time:07/16/2019 Source:sciencedirect.com
Chromone-3-carboxamides react with cyanothioacetamide in the presence of NaOEt in boiling ethanol to form 5-oxo-2-thioxo-1,5-dihydro-2H-chromeno[4,3-b]pyridine-3-carbonitriles (67–87% yields), whereas their reaction with N-methylcyanothioacetamide and a catalytic amount of Et3N in boiling ethanol affords 5-cyano-2-(2-hydroxyphenyl)-1-methyl-6-thioxo-1,6-dihydropyridine-3-carboxamides in 57–73% yields.
We also recommend Trading Suppliers and Manufacturers of N-methyl-6-oxo-1,6-dihydropyridine-3-carboxamide (cas 1007-18-7). Pls Click Website Link as below: cas 1007-18-7 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View