反应详情

A mixture of 10.0 g of N-[3-(hydroxymethyl)phenyl]-N'-[4-(tetradecyloxy)phenyl]urea, 70 ml of hydrogen bromide in acetic acid and 40 ml of chloroform is refluxed for 2.5 hours, then cooled. The solid is collected and washed with carbon tetrachloride and two times with water. The collected solid is crystallized from ethyl alcohol:tetrahydrofuran followed by recrystallization from tetrahydrofuran to give 7.4 g of the desired product as a white powder, m.p. 164°-169° C.

1. temperatureis refluxed for 2.5 hours
2. temperaturecooled
3. customThe solid is collected
4. washwashed with carbon tetrachloride and two times with water
5. customThe collected solid is crystallized from ethyl alcohol
6. customtetrahydrofuran followed by recrystallization from tetrahydrofuran