Oxalylation of the 3-oxo-N-phenyl-3-R-propanethioamides

…, AN Borisevich, LS Samoylenko, AN Chernega…

Index: Britsun; Borisevich; Samoylenko; Chernega; Lozynskii Russian Chemical Bulletin, 2005 , vol. 54, # 3 p. 770 - 773

Full Text: HTML

Citation Number: 3

Abstract

Abstract Oxalylation of 3-oxo-N-phenyl-3-R-propanethioamides in aprotic solvents in the temperature range from− 40° C to+ 20° C results in 4-acyl-5-phenylamino-2, 3- dihydrothiophene-2, 3-diones and 2-(2-oxo-2-R-ethylidene)-3-phenyl-1, 3-thiazolidine-4, 5- diones, while in the presence of potassium carbonate, potassium 4-acyl-2, 3-dioxo-1-phenyl- 2, 3-dihydro-1 H-pyrrole-5-thiolates are formed.