1,1-dichloro-2,2-difluoroethene

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: p-Methoxystyrene (40.8 g., 0.30 mole), 1,1-dichloro-2,2-difluoroethylene (55.8 g., 0.42 mole), and triethylamine (3.0 ml., 0.02 mole) are heated in a sealed tube (25 × 615 mm) at 125°-130° C. for 16 hrs. The cooled mixture is then poured into water, the reaction product extracted with ether, and the extracts washed with water, dried (MgSO4), and evaporated to an oil. Distillation of the oil yields 69.0 g. (86%), b.p. 80°-85° C. (0.1 mm), of the desired intermediate sutiable for use in the next step. Part of the oil was chromatographed (alumina, cyclohexane), and redistilled, b.p. 81° C. (0.02 mm), nD27 1.5207. the reaction product extracted with ether the extracts washed with water dried (MgSO4) evaporated to an oil Distillation of the oil yields 69.0 g Part of the oil was chromatographed (alumina, cyclohexane) redistilled

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: p-Methoxystyrene (40.8 g., 0.30 mole), 1,1-dichloro-2,2-difluoroethylene (55.8 g., 0.42 mole), and triethylamine (3.0 ml., 0.02 mole) are heated in a sealed tube (25 × 615 mm) at 125°-130° C. for 16 hrs. The cooled mixture is then poured into water, the reaction product extracted with ether, and the extracts washed with water, dried (MgSO4), and evaporated to an oil. Distillation of the oil yields 69.0 g. (86%), b.p. 80°-85° C. (0.1 mm), of the desired intermediate sutiable for use in the next step. Part of the oil was chromatographed (alumina, cyclohexane), and redistilled, b.p. 81° C. (0.02 mm), nD27 1.5207. the reaction product extracted with ether the extracts washed with water dried (MgSO4) evaporated to an oil Distillation of the oil yields 69.0 g Part of the oil was chromatographed (alumina, cyclohexane) redistilled

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a 500 ml stirred reaction flask equipped with thermometer, air condenser, dropping funnel and ice water bath was placed 76.57 g (0.5 mol) of 5-methyl-2-nitrophenol in 150 ml of acetone and 5.5 g of powdered KOH (85 percent). The mixture was vigorously stirred at 10° C, whereupon 73 g of 2,2-dichloro-1,1-difluoroethene was gradually introduced. After stirring overnight, the reaction mixture was poured into ice water, and the lower organic layer separated by methylene chloride extraction. The extract was washed with diluted bicarbonate of soda solution, decolorized with charcoal, and dried over desiccant-grade magnesium sulfate. Evaporation of the solvent left an oily residue which was vacuum distilled at 5 mm to give 38.6 g of 2-(2,2-dichloro-1,1-difluoroethoxy)-4-methyl-1-nitrobenzene distilling at 156° C. reaction flask equipped with thermometer, air condenser was gradually introduced After stirring overnight the lower organic layer separated by methylene chloride extraction The extract was washed with diluted bicarbonate of soda solution dried over desiccant-grade magnesium sulfate Evaporation of the solvent left an oily residue which distilled at 5 mm

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a 500 ml stirred reaction flask equipped with thermometer, air condenser, dropping funnel and ice water bath was placed 76.57 g (0.5 mol) of 5-methyl-2-nitrophenol in 150 ml of acetone and 5.5 g of powdered KOH (85 percent). The mixture was vigorously stirred at 10° C, whereupon 73 g of 2,2-dichloro-1,1-difluoroethene was gradually introduced. After stirring overnight, the reaction mixture was poured into ice water, and the lower organic layer separated by methylene chloride extraction. The extract was washed with diluted bicarbonate of soda solution, decolorized with charcoal, and dried over desiccant-grade magnesium sulfate. Evaporation of the solvent left an oily residue which was vacuum distilled at 5 mm to give 38.6 g of 2-(2,2-dichloro-1,1-difluoroethoxy)-4-methyl-1-nitrobenzene distilling at 156° C. reaction flask equipped with thermometer, air condenser was gradually introduced After stirring overnight the lower organic layer separated by methylene chloride extraction The extract was washed with diluted bicarbonate of soda solution dried over desiccant-grade magnesium sulfate Evaporation of the solvent left an oily residue which distilled at 5 mm

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: p-Methoxystyrene (40.8 g., 0.30 mole), 1,1-dichloro-2,2-difluoroethylene (55.8 g., 0.42 mole), and triethylamine (3.0 ml., 0.02 mole) are heated in a sealed tube (25 × 615 mm) at 125°-130° C. for 16 hrs. The cooled mixture is then poured into water, the reaction product extracted with ether, and the extracts washed with water, dried (MgSO4), and evaporated to an oil. Distillation of the oil yields 69.0 g. (86%), b.p. 80°-85° C. (0.1 mm), of the desired intermediate sutiable for use in the next step. Part of the oil was chromatographed (alumina, cyclohexane), and redistilled, b.p. 81° C. (0.02 mm), nD27 1.5207. the reaction product extracted with ether the extracts washed with water dried (MgSO4) evaporated to an oil Distillation of the oil yields 69.0 g Part of the oil was chromatographed (alumina, cyclohexane) redistilled

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir: