反应详情

温度

50 °C

In 7 ml of ethanol and 2 ml of tetrahydrofuran were dissolved 248 mg (0.62 mmol) of 5-[4-(4-dibutylamino-2-methoxyphenyl)-1,3-butadienyl]thiophene-2-carboaldehyde and 137 mg (0.61 mmol) of 2-(3-cyano-4,5,5-trimethyl-2(5H)-furanylidene) propanedinitrile. To this mixture was added 50 mg of ammonium acetate, and the mixture was stirred with heating at 50° C. for 4 hours. The product was separated by filtration, washed with ethanol, and purified by silica gel column chromatography to give 241 mg of a dark brown crystal (yield: 66.8%; mp: 185-187° C.)

1. customThe product was separated by filtration
2. washwashed with ethanol
3. custompurified by silica gel column chromatography