acetylenedicarboxylates in solventless conditions to form 1:1 adducts, which undergo a cyclization reaction to produce alkyl Z-2-(2-amino-4-oxo-1,3-thiazol-5(4H)-yliden)acetates in fairly good yields. The stereochemistry of the ethyl Z-2-(2-amino-4-oxo-1,3-thiazol-5(4H)-yliden)acetate was established by the use of X-ray single crystal structure analysis. The reaction is completely stereoselective.
钛脲与乙炔二羧酸二烷基酯在无溶剂条件下反应形成 1:1 加合物,经过环化反应生成烷基 Z-2-(2-amino-4-oxo-1,3-thiazol-5(4H)-yliden)acetates收益率相当不错。Z-2-(2-amino-4-oxo-1,3-thiazol-5(4H)-yliden) 乙酸乙酯的立体化学是通过使用 X 射线单晶结构分析建立的。该反应是完全立体选择性的。
ASKARI S. H.; MOSS S. F.; TAYLOR D. R., J. CHEM. SOC. PERKIN TRANS., PART 1, 1981, NO 2, 360-365
作者:ASKARI S. H.、 MOSS S. F.、 TAYLOR D. R.
DOI:——
日期:——
An efficient solvent-tuning approach for the rapid synthesis of thiazolidinone derivatives and the selective synthesis of 2-amino-4H-1,3-thiazin-4-one and dimethyl 3,3′-thiodiacrylates
作者:Garima Choudhary、Rama Krishna Peddinti
DOI:10.1016/j.tetlet.2014.08.032
日期:2014.10
Green synthetic approach has been developed for the rapid generation of thiazolidinone derivatives as crystallized products under catalyst-free conditions in water by polarity adjustment with ethyl lactate as a co-solvent in excellent yields. Additionally, interesting findings on the synthesis of 2-amino-4H-1,3-thiazin-4-one and dimethyl 3,3'-thiodiacrylates have been reported. (C) 2014 Elsevier Ltd. All rights reserved.