Hydrochloric Acid → 1H-Imidazole-2-propanol, 5-((3,5-dichlorophenyl)thio)-1-methyl-4-(1-methylethyl)-

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Reaction Conditions

Reaction Steps

To 3.1 g (6.9 mmol) of the above oil (136a) was added 13 ml of concentrated hydrochloric acid and the mixture was heated at 110° C. for 2 hours. After cooling, the mixture was neutralized with sodium hydrogen carbonate and extracted with ethyl acetate. The extract was washed with water, dried over sodium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (3% methanol-ethyl acetate) and recrystallized from ethyl acetate-n-hexane to provide 1.6 g (yield 39%) of 3-(5-(3,5-dichlorophenylthio)-4-isopropyl-1-methyl-1H-imidazol-2-yl)-propan-1-ol (137a) as crystals. mp 124-125° C.

Provenance & Evidence