Abstract
Regioselective condensation of α‐tosyloxyacetophenones 1 and N‐substituted thioureas 2 in acidic medium to give regioisomers 2‐aminothiazoles I and 2‐imino‐2,3‐dihydrothiazoles II is largely influenced by the substituents present on 1 and 2. A mechanism, supported by DFT calculations has been proposed to explain the observed regioselectively.
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