反应详情

To a solution of 3.0 g. (8.4 mmol.) of 2-benzoyl-3-bromomethylquinoxaline 1,4-dioxide and 0.90 g. (9.2 mmol.) of potassium acetate in 40 ml. of N,N-dimethylformamide, was added 0.22 g. (1.3 mmol.) of finely ground potassium iodide. The reaction mixture was stirred for 1.5 hours at ambient temperature, and then it was poured into 1,000 ml. of ether. The solid which precipitated was removed by filtration and discarded. Evaporation of the filtrate in vacuo left a yellow solid which was washed with methanol and dried, to give 2.7 g. (94% yield) of 2-benzoyl-3-acetoxymethylquinoxaline 1,4-dioxide, m.p. 164°-167° C.

1. additionit was poured into 1,000 ml
2. customThe solid which precipitated
3. customwas removed by filtration
4. customEvaporation of the filtrate in vacuo
5. waitleft a yellow solid which
6. washwas washed with methanol
7. customdried
8. customto give 2.7 g