反应详情

To a solution of 5-(4-hydroxybenzyl)-2,4-thiazolidinedione (9.4 g) in N,N-dimethylformamide (80 ml) was added 60% sodium hydride in oil (3.4 g), and the mixture was stirred for 30 minutes. Then, a solution of 4-chloromethyl-2-phenyloxazole (9.6 g) in N,N-dimethylformamide (20 ml) was added dropwise thereto at room temperature. After being stirred at 70° C. for 1 hour, the reaction solution was poured into water, and the aqueous mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with water, dried (MgSO4) and concentrated to give 5-[4-(2-phenyl-4-oxazolylmethoxy)benzyl]-2,4-thiazolidinedione (9.1 g, 47.4%). Recrystallization from ethanol yielded colorless needles. m.p. 188°-189° C. Elemental analysis for C20H16N2O4S; Calcd.: C, 63.15; H, 4.24; N, 7.36. Found: C, 63.19; H, 4.16; N, 7.23.

1. customat room temperature
2. stirringAfter being stirred at 70° C. for 1 hour
3. extractionthe aqueous mixture was extracted with ethyl acetate
4. washThe ethyl acetate layer was washed with water
5. dry with materialdried (MgSO4)
6. concentrationconcentrated