5,6-二氯-2,2-二氟-1,3-苯并二氧戊环

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A precooled mixture of 140 ml of 100% strength nitric acid and 200 ml of 100% strength sulphuric acid is added dropwise at 5° to 10° C. (internal temperature) with good stirring to 219 g (0.96 mol) of 5,6-dichloro-2,2-difluorobenzo[1.3]dioxole. The reaction mixture is then subsequently stirred at room temperature for 6 h. It is added to ice-water and extracted with ether, and the extract is dried and concentrated. 233 g (89% of theory) of 5,6-dichloro-4-nitro-2,2-difluoro-benzo(1.3)dioxole having a melting point of 29°-30° C. are obtained. is added dropwise at 5° to 10° C. (internal temperature) extracted with ether the extract is dried concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A precooled mixture of 140 ml of 100% strength nitric acid and 200 ml of 100% strength sulphuric acid is added dropwise at 5° to 10° C. (internal temperature) with good stirring to 219 g (0.96 mol) of 5,6-dichloro-2,2-difluorobenzo[1.3]dioxole. The reaction mixture is then subsequently stirred at room temperature for 6 h. It is added to ice-water and extracted with ether, and the extract is dried and concentrated. 233 g (89% of theory) of 5,6-dichloro-4-nitro-2,2-difluoro-benzo(1.3)dioxole having a melting point of 29°-30° C. are obtained. is added dropwise at 5° to 10° C. (internal temperature) extracted with ether the extract is dried concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A precooled mixture of 140 ml of 100% strength nitric acid and 200 ml of 100% strength sulphuric acid is added dropwise at 5° to 10° C. (internal temperature) with good stirring to 219 g (0.96 mol) of 5,6-dichloro-2,2-difluorobenzo[1.3]dioxole. The reaction mixture is then subsequently stirred at room temperature for 6 h. It is added to ice-water and extracted with ether, and the extract is dried and concentrated. 233 g (89% of theory) of 5,6-dichloro-4-nitro-2,2-difluoro-benzo(1.3)dioxole having a melting point of 29°-30° C. are obtained. is added dropwise at 5° to 10° C. (internal temperature) extracted with ether the extract is dried concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A precooled mixture of 140 ml of 100% strength nitric acid and 200 ml of 100% strength sulphuric acid is added dropwise at 5° to 10° C. (internal temperature) with good stirring to 219 g (0.96 mol) of 5,6-dichloro-2,2-difluorobenzo[1.3]dioxole. The reaction mixture is then subsequently stirred at room temperature for 6 h. It is added to ice-water and extracted with ether, and the extract is dried and concentrated. 233 g (89% of theory) of 5,6-dichloro-4-nitro-2,2-difluoro-benzo(1.3)dioxole having a melting point of 29°-30° C. are obtained. is added dropwise at 5° to 10° C. (internal temperature) extracted with ether the extract is dried concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A precooled mixture of 140 ml of 100% strength nitric acid and 200 ml of 100% strength sulphuric acid is added dropwise at 5° to 10° C. (internal temperature) with good stirring to 219 g (0.96 mol) of 5,6-dichloro-2,2-difluorobenzo[1.3]dioxole. The reaction mixture is then subsequently stirred at room temperature for 6 h. It is added to ice-water and extracted with ether, and the extract is dried and concentrated. 233 g (89% of theory) of 5,6-dichloro-4-nitro-2,2-difluoro-benzo(1.3)dioxole having a melting point of 29°-30° C. are obtained. is added dropwise at 5° to 10° C. (internal temperature) extracted with ether the extract is dried concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A precooled mixture of 140 ml of 100% strength nitric acid and 200 ml of 100% strength sulphuric acid is added dropwise at 5° to 10° C. (internal temperature) with good stirring to 219 g (0.96 mol) of 5,6-dichloro-2,2-difluorobenzo[1.3]dioxole. The reaction mixture is then subsequently stirred at room temperature for 6 h. It is added to ice-water and extracted with ether, and the extract is dried and concentrated. 233 g (89% of theory) of 5,6-dichloro-4-nitro-2,2-difluoro-benzo(1.3)dioxole having a melting point of 29°-30° C. are obtained. is added dropwise at 5° to 10° C. (internal temperature) extracted with ether the extract is dried concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A precooled mixture of 140 ml of 100% strength nitric acid and 200 ml of 100% strength sulphuric acid is added dropwise at 5° to 10° C. (internal temperature) with good stirring to 219 g (0.96 mol) of 5,6-dichloro-2,2-difluorobenzo[1.3]dioxole. The reaction mixture is then subsequently stirred at room temperature for 6 h. It is added to ice-water and extracted with ether, and the extract is dried and concentrated. 233 g (89% of theory) of 5,6-dichloro-4-nitro-2,2-difluoro-benzo(1.3)dioxole having a melting point of 29°-30° C. are obtained. is added dropwise at 5° to 10° C. (internal temperature) extracted with ether the extract is dried concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A precooled mixture of 140 ml of 100% strength nitric acid and 200 ml of 100% strength sulphuric acid is added dropwise at 5° to 10° C. (internal temperature) with good stirring to 219 g (0.96 mol) of 5,6-dichloro-2,2-difluorobenzo[1.3]dioxole. The reaction mixture is then subsequently stirred at room temperature for 6 h. It is added to ice-water and extracted with ether, and the extract is dried and concentrated. 233 g (89% of theory) of 5,6-dichloro-4-nitro-2,2-difluoro-benzo(1.3)dioxole having a melting point of 29°-30° C. are obtained. is added dropwise at 5° to 10° C. (internal temperature) extracted with ether the extract is dried concentrated