Dimethyl Sulfoxide → 1-Methyl-3-(4-nitrophenyl)imidazolidin-2-one

Participants

Reaction Steps

A mixture of 21 parts of 1-(4-nitrophenyl)-2-imidazolidinone, 16 parts of iodomethane, 10 parts of potassium hydroxide and 200 parts of dimethyl sulfoxide was stirred for 3 hours at room temperature. Another portion of 16 parts of iodomethane and 10 parts of potassium hydroxide were added. Stirring was continued overnight. 300 Parts of water were added to the reaction mixture and the whole was stirred. The precipitated product was filtered off and crystallized from 4-methyl-2-pentanone, yielding 16.5 parts (74%) of 1-methyl-3-(4-nitrophenyl)-2-imidazolidinone; mp. 214.1°-215.5° C. (7).

Provenance & Evidence