反应详情

温度

5 °C

In a 3 liter-four-necked flask, 173.7 (2.38 mol) of N,N-dimethylformamide was placed and cooled to 5° C., followed by addition of 201.4 g (1.31 mol) of POCl3 in 15 min below 10° C. under stirring. After stirring for 30 min. below 10° C., 200 g (1.19 mol) of 2-hexylthiophene was added dropwise to the mixture in 10 min. at room temperature, followed by stirring for 1.5 hours and further stirring for 2 hours at 60° C. After the reaction, the reaction mixture was poured into 5 liters of iced water, subjected to 3 times of extraction with 2 liters of chloroform and washed 6 times with 2 liter of water. The organic layer was dried with CaCl2, followed by distilling-off of the solvent and reduced-pressure distillation in an atmosphere of nitrogen to obtain 199.2 g of a product (yield: 85.0%).

1. stirringAfter stirring for 30 min. below 10° C.
2. stirringby stirring for 1.5 hours
3. stirringfurther stirring for 2 hours at 60° C
4. customAfter the reaction
5. extractionsubjected to 3 times of extraction with 2 liters of chloroform
6. washwashed 6 times with 2 liter of water
7. dry with materialThe organic layer was dried with CaCl2
8. distillationfollowed by distilling-off of the solvent and reduced-pressure distillation in an atmosphere of nitrogen