反应详情

A solution of 17.2 g. of 2-benzoylimidazole (A. Sonn and P. Greif, Ber. 66 (1933), 1900) in 100 ml. of anhydrous tetrahydrofuran was added drop-wise to a Grignard reagent prepared from 5.8 g. of magnesium and 45.9 g. of 1-bromo-4-chlorobenzene in 150 ml. of anhydrous tetrahydrofuran. The reaction mixture was boiled under reflux for half an hour, cooled and poured onto a mixture of ice and hydrochloric acid. The solution was neutralized with concentrated ammonia solution and extracted with tetrahydrofuran. The organic solvents layer was dried and concentrated; the residue was crystallised from isopropyl alcohol. Melting point of the product was 162°-165° C.

1. customprepared from 5.8 g
2. temperatureunder reflux for half an hour
3. temperaturecooled
4. extractionextracted with tetrahydrofuran
5. customThe organic solvents layer was dried
6. concentrationconcentrated
7. customthe residue was crystallised from isopropyl alcohol
8. customwas 162°-165° C.