A correlative IR, MS, 1H, 13C and 15 NMR and theoretical study of 4-arylthiazol-2(3H)-ones
Sixteen 4-arylthiazol-2(3H)-ones (3) were synthesised by cyclisation of α-thiocyanatoacetophenones (1) in acid solution. They appear to prefer greatly the oxo tautomeric forms. In CCI4 solution an equilibrium between the free C=O bond and a "di