Treatment of Cyclohexa-2,4-dien-1-one derivative 4 with 10% HCl in aqueous solution gave 1-(3,5-dimethyl-4-hydroxy)phenyl acetic acid, 5 in 93.5% yields. Transformation was identified by melting point, ?H NMR and IR spectrum. The step-by-step mechanis...
Treatment of Cyclohexa-2,4-dien-1-one derivative 4 with 10% HCl in aqueous solution gave 1-(3,5-dimethyl-4-hydroxy)phenyl acetic acid, 5 in 93.5% yields. Transformation was identified by melting point, ?H NMR and IR spectrum. The step-by-step mechanism of this reaction was proposed. Clearly loss of CH?=S?CH? was involved in the reaction to give 1-(3,5-dimethyl-4-hydroxy) phenyl acetic acid, 5.