Hydrogen Bromide → HCID 178419740, compound

Participants

Reaction Steps

A mixture of 8 gm (0.032 mol) of 2-(3,4,5-trimethoxy-phenylimino)-imidazolidine base and 150 ml of 48% of hydrobromic acid was refluced for 5 hours on an oil bath. Thereafter, the reaction mixture was evaporated in vacuo to half its original volume and allowed to stand overnight in the refrigerator. The amorphous precipitate which had formed was isolated and dried, yielding 7.3 gm (78.6% of theory) of 2-(3,4,5-trihydroxy-phenylimino)-imidazolidine hydrobromide, m.p. 204°-206° C., Rf -value 0.3 in mobile phase 75 parts sec.butanol, 15 parts formic acid, 10 parts water. Carrier: silicagel, visualization; potassium iodoplatinate.

Provenance & Evidence