ChemInform Abstract: Crotonic, Cynnamic, and Propiolic Acids Motifs in the Synthesis of Thiopyrano[2,3-d][1,3]thiazoles via hetero-Diels-Alder Reaction and Related Tandem Processes

The preparation of a series of thiopyrano[2,3-d][1,3]thiazole-6-carboxylic acids is achieved by hetero-Diels—Alder reaction of 5-arylideneisorhodanines with double and triple bond dienophiles.