Dimethyl Sulfate → HCID 12833691, compound

Participants

Reaction Steps

To a stirred solution of 3.25 parts of potassium hydroxide solution 86% in 80 parts of methanol are added 11 parts of 4-(1-ethyl-2-mercapto-1H-imidazol-4-yl)phenol and stirring is continued till all solid enters solution. Then there are added 6.9 parts of dimethyl sulfate and the whole is stirred overnight at room temperature. The precipitate is filtered off and the filtrate is evaporated. The solid residue is stirred with water. The product is filtered off and crystallized from 4-methyl-2-pentanone, yielding 7 parts (60%) of 4-[1-ethyl-2-(methylthio)-1H-imidazol-4-yl]phenol; mp. 218.2° C.

Provenance & Evidence