反应详情

9.2 g of 4,4'-diamino-1,1'-dianthrimide are heated in 75 ml of nitrobenzene to 145°-150° C. 6.5 g of thiophene-2-carboxylic acid chloride are then added dropwise over a period of 30 minutes. The temperature of the suspension is increased to 170°-175° C. over a period of 2 hours and the suspension is stirred for 2 hours at that temperature. After cooling, the product is filtered off and washed with nitrobenzene and ethanol. 12.5 g of the anthrimide of the formula (2) are obtained. The anthrimide is converted into the carbazole compound of the formula (1) in accordance with Example 1, paragraph 2.

1. temperatureThe temperature of the suspension is increased to 170°-175° C. over a period of 2 hours
2. temperatureAfter cooling
3. filtrationthe product is filtered off
4. washwashed with nitrobenzene and ethanol