反应详情

In 10 ml of ethanol and 5 ml of tetrahydrofuran were dissolved 300 mg (0.67 mmol) of 5-[2-(2-benzyloxy-4-dibutylaminophenyl)vinyl]thiophene-2-carboaldehyde and 147 mg (0.74 mmol) of 2-(3-cyano-4,5,5-trimethyl-2(5H)-furanylidene)propanedinitrile. To this mixture was added 52 mg of ammonium acetate, and the mixture was stirred at room temperature for 18 hours and further stirred with heating at 50° C. for 7 hours. The solvent was evaporated off and the residue was washed with ethanol to give 246 mg of a dark brown crystal (yield: 58.4%; mp: 218-219° C.)

1. stirringfurther stirred
2. temperaturewith heating at 50° C. for 7 hours
3. customThe solvent was evaporated off
4. washthe residue was washed with ethanol