Abstract
A new synthesis of pyrrolo[2,1-b]thiazoles (5) is described. Hydrolysis of acetoxy dihydro-1,4-thiazine (2) prepared by Pummerer reaction of dihydro-1,4-thiazine sulfoxide gave the intermediate α-hydroxy sulfide (4). Dehydration of 4 gave pyrrolo[2,1-b]thiazoles (5). The reaction mechanism for the formation of 5 including the intermediate thiol (6) is discussed.
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