4-(bromomethyl)-3-fluorobenzenesulfonyl chloride

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

Procedure: 20.9 g (0.1 mol) of 3-fluoro-4-methylbenzenesulphonyl chloride are taken up in 200 ml of carbon tetrachloride and, after addition of 19.6 g (0.11 mol) of N-bromosuccinimide and 0.3 g of dibenzoyl peroxide, the mixture is heated under reflux for 5 hours. After cooling, the solids are filtered off and the filtrate is freed from the solvent. Flash chromatography with petroleum ether/toluene (4:1), 50 μm particle size, gives 12.4 g (44% of theory) of the title compound. Rf : 0.42 (petroleum ether/toluene 3:1). the mixture is heated under reflux for 5 hours After cooling the solids are filtered off

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

Procedure: 20.9 g (0.1 mol) of 3-fluoro-4-methylbenzenesulphonyl chloride are taken up in 200 ml of carbon tetrachloride and, after addition of 19.6 g (0.11 mol) of N-bromosuccinimide and 0.3 g of dibenzoyl peroxide, the mixture is heated under reflux for 5 hours. After cooling, the solids are filtered off and the filtrate is freed from the solvent. Flash chromatography using petroleum ether/toluene (4:1), 50 μm particle size, gives 12.4 g (44% of theory) of the title compound. the mixture is heated under reflux for 5 hours After cooling the solids are filtered off

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

Procedure: 20.9 g (0.1 mol) of 3-fluoro-4-methylbenzenesulphonyl chloride are taken up in 200 ml of carbon tetrachloride and, after addition of 19.6 g (0.11 mol) of N-bromosuccinimide and 0.3 g of dibenzoyl peroxide, the mixture is heated under reflux for 5 hours. After cooling, the solids are filtered off and the filtrate is freed from the solvent. Flash chromatography using petroleum ether/toluene (4:1), 50 μm particle size, gives 12.4 g (44% of theory) of the title compound. the mixture is heated under reflux for 5 hours After cooling the solids are filtered off

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

Procedure: 20.9 g (0.1 mol) of 3-fluoro-4-methylbenzenesulphonyl chloride are taken up in 200 ml of carbon tetrachloride and, after addition of 19.6 g (0.11 mol) of N-bromosuccinimide and 0.3 g of dibenzoyl peroxide, the mixture is heated under reflux for 5 hours. After cooling, the solids are filtered off and the filtrate is freed from the solvent. Flash chromatography using petroleum ether/toluene (4:1), 50 μm particle size, gives 12.4 g (44% of theory) of the title compound. the mixture is heated under reflux for 5 hours After cooling the solids are filtered off

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

Procedure: 20.9 g (0.1 mol) of 3-fluoro-4-methylbenzenesulphonyl chloride are taken up in 200 ml of carbon tetrachloride and, after addition of 19.6 g (0.11 mol) of N-bromosuccinimide and 0.3 g of dibenzoyl peroxide, the mixture is heated under reflux for 5 hours. After cooling, the solids are filtered off and the filtrate is freed from the solvent. Flash chromatography with petroleum ether/toluene (4:1), 50 μm particle size, gives 12.4 g (44% of theory) of the title compound. Rf : 0.42 (petroleum ether/toluene 3:1). the mixture is heated under reflux for 5 hours After cooling the solids are filtered off