反应详情

温度

60 °C

In 15 ml of 1-methyl-2-pyrrolidone were dissolved 0.76 g (2.13 mmol) of 5-[2-(4-dibutylamino-2-hydroxyphenyl)vinyl]thiophene-2-carboaldehyde and 0.8 g (5.84 mmol) of epibromohydrin. To this mixture was added 0.59 g (4.27 mmol) of anhydrous potassium carbonate and the mixture was stirred with heating at 60° C. for 4 hours. After the reaction mixture was poured into water, extraction with ethyl acetate, washing with a saturated saline solution, drying over anhydrous sodium sulfate, and concentration were performed. The residual liquid was purified by silica gel column chromatography. From the earlier fraction, 0.31 g of 5-[2-[4-dibutylamino-2-(oxiranylmethoxy)phenyl]vinyl]thiophene-2-carboaldehyde was obtained. From the later fraction, 0.45 g of 5-[2-[2-(3-bromo-2-hydroxypropoxy)-4-dibutylaminophenyl]vinyl]thiophene-2-carboaldehyde was obtained.

1. washwashing with a saturated saline solution
2. dry with materialdrying over anhydrous sodium sulfate, and concentration
3. customThe residual liquid was purified by silica gel column chromatography