Figure 3. Cycloaddition reaction of thioglycolic acid to Schiff’s bases(12) to give thiazolidinone (13)

From

Short Review on Synthesis of Thiazolidinone and β-Lactam

N. A. A. Elkanzi

World Journal of Organic Chemistry. 2013, 1(2), 24-51 doi:10.12691/wjoc-1-2-4