作者:V. N. Britsun、A. N. Borisevich、L. S. Samoylenko、A. N. Chernega、M. O. Lozynskii
DOI:10.1007/s11172-005-0318-0
日期:2005.3
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-1H-pyrrole-5-thiolates are formed.
在 -40°C 至 +20°C 的温度范围内,3-氧代-N-苯基-3-R-丙硫酰胺在无相溶剂中发生草酰化反应,生成 4-酰基-5-苯基氨基-2,3-二氢噻吩-2.3-二酮和 2-(2-氧代-2-R-亚乙基)-3-苯基-1,3-噻唑烷-4,5-二酮、3-二酮和 2-(2-氧代-2-R-亚乙基)-3-苯基-1,3-噻唑烷-4,5-二酮,而在碳酸钾存在下,会生成 4-酰基-2,3-二氧代-1-苯基-2,3-二氢-1H-吡咯-5-硫酸酯钾盐。