Ethanol → HCID 178480057, compound

Participants

Reaction Steps

A mixture of 5-[[3,5-bis(1,1-dimethylethyl)-4hydroxyphenyl]methylene]-1,5-dihydro-1-methyl-2-(methylthio)-4H-imidazol-4-one (3.0 g, 8 mmoles), guanidine hydrochloride (1.7 g, 18 mmoles) and 50 mL of ethanol is treated with potassium t-butoxide (1.5 g, 13 mmoles) and heated under reflux for 20 hours, then stirred into 400 mL of water. The precipitate is filtered off, rinsed with water, dried, and recrystallized from acetone to afford the product (1.4 g), mp 286°-287° C. (dec). A sample recrystallized from DMF/EtOH was analytically pure which is N-[5-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methylene]-4,5-dihydro-1-methyl-4-oxo-1H-imidazol-2-yl]guanidine, mp 288°-290° C. (dec).

Provenance & Evidence