4-bromo-2,5-difluorobenzenesulfonyl chloride

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: A solution of 4-bromo-2,5-difluorobenzenesulfonyl chloride (1.17 g, 4 mmol) in CH2Cl2 (3 mL) was added to a solution of 2-aminoethanol (0.36 mL, 6 mmol) and triethylamine (1.67 mL, 12 mmol) in CH2Cl2 (12 mL) at ambient temperature. The mixture was stirred at ambient temperature for 1 h and concentrated. The crude product was purified by chromatography on a silica gel column using 0 to 10% MeOH/CH2Cl2 to give 884 mg (70%) of 4-bromo-2,5-difluoro-N-(2-hydroxyethyl)benzenesulfonamide as a white solid. 1H NMR (400 MHz, CDCl3): δ 7.67 (dd, 1H, Ja=7.2 Hz, Jb=6.0 Hz), 7.47 (dd, 1H, Ja=8.7 Hz, Jb=5.1 Hz), 5.39-5.14 (m, 1H), 3.78-3.64 (m, 2H), 3.26-3.10 (m, 2H), 1.73 (bs, 1H); LRMS (ESI), m/z 314/316 (M−H). concentrated The crude product was purified by chromatography on a silica gel column

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

Procedure: Ammonium hydroxide (5 ml) was added to a solution of 2,5-difluoro-4-bromophenylsulfonyl chloride (4.3 g) in tetrahydrofuran (20 ml) at room temperature (CARE:exotherm) and stirred for 10 min. The reaction mixture was poured into water and extracted with ethyl acetate. The ethyl acetate was dried over anhydrous magnesium sulfate and filtered. The filtrate was evaporated and the residue triturated with 20% diethyl ether in isohexane to give the sub-title compound as a solid (4.3 g). extracted with ethyl acetate The ethyl acetate was dried over anhydrous magnesium sulfate filtered The filtrate was evaporated the residue triturated with 20% diethyl ether in isohexane

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

Procedure: Morpholine (0.16 ml) was added to a stirred solution of 4-bromo-2,5-difluoro-benzenesulfonyl chloride (0.18 g) in dichloromethane (6 ml) under nitrogen. The reaction mixture was stirred overnight and then quenched with water. The organic phase was dried (MgSO4) and concentrated in vacuo to give the sub-title compound as a white solid (200 mg). quenched with water The organic phase was dried (MgSO4) concentrated in vacuo

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

Procedure: The title compound was prepared 4-[2,6-dichloro-4-(trifluoromethyl)phenyl]-1,3-thiazol-2-amine (85 mg) and 4-bromo-2,5-difluorobenzenesulfonyl chloride (79 mg) as described in the synthetic METHOD B to give a white solid (38.2 mg) with purity >90%: MS (pos) m/z 567.2, 569.2, 571.2; MS (neg) m/z 565.5, 567.5, 569.5.

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

Procedure: The title compound was prepared 4-[2,6-dichloro-4-(trifluoromethyl)phenyl]-1,3-thiazol-2-amine (85 mg) and 4-bromo-2,5-difluorobenzenesulfonyl chloride (79 mg) as described in the synthetic METHOD B to give a white solid (38.2 mg) with purity >90%: MS (pos) m/z 567.2, 569.2, 571.2; MS (neg) m/z 565.5, 567.5, 569.5.

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

Procedure: The title compound was prepared 4-[2-chloro-4-(4-chlorophenoxy)phenyl]-1,3-thiazol-2-amine (91 mg) and 4-bromo-2,5-difluorobenzenesulfonyl chloride (79 mg) as described in the synthetic METHOD B to give a white solid (46.9 mg) with purity >90%: MS (neg) m/z 589.5, 591.5, 593.5; HRMS m/z 589.8745 (calc. of monoisotopic mass for C21 H11 Br Cl2 F2N2 O3 S2 gives 589.8740).

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

Procedure: The title compound was prepared 4-(3-chloro-2-thienyl)-1,3-thiazol-2-amine (59 mg) and 4-bromo-2,5-difluorobenzenesulfonyl chloride (79 mg) as described in the synthetic METHOD B to give a white solid (22.3 mg) with purity >90%: MS (pos) m/z 471.2, 473.2.

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

Procedure: A solution of 4-bromo-2,5-difluorobenzenesulfonyl chloride (1.17 g, 4 mmol) in CH2Cl2 (3 mL) was added to a solution of 2-aminoethanol (0.36 mL, 6 mmol) and triethylamine (1.67 mL, 12 mmol) in CH2Cl2 (12 mL) at ambient temperature. The mixture was stirred at ambient temperature for 1 h and concentrated. The crude product was purified by chromatography on a silica gel column using 0 to 10% MeOH/CH2Cl2 to give 884 mg (70%) of 4-bromo-2,5-difluoro-N-(2-hydroxyethyl)benzenesulfonamide as a white solid. 1H NMR (400 MHz, CDCl3): δ 7.67 (dd, 1H, Ja=7.2 Hz, Jb=6.0 Hz), 7.47 (dd, 1H, Ja=8.7 Hz, Jb=5.1 Hz), 5.39-5.14 (m, 1H), 3.78-3.64 (m, 2H), 3.26-3.10 (m, 2H), 1.73 (bs, 1H); LRMS (ESI), m/z 314/316 (M−H). concentrated The crude product was purified by chromatography on a silica gel column

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

Procedure: Ammonium hydroxide (5 ml) was added to a solution of 2,5-difluoro-4-bromophenylsulfonyl chloride (4.3 g) in tetrahydrofuran (20 ml) at room temperature (CARE:exotherm) and stirred for 10 min. The reaction mixture was poured into water and extracted with ethyl acetate. The ethyl acetate was dried over anhydrous magnesium sulfate and filtered. The filtrate was evaporated and the residue triturated with 20% diethyl ether in isohexane to give the sub-title compound as a solid (4.3 g). extracted with ethyl acetate The ethyl acetate was dried over anhydrous magnesium sulfate filtered The filtrate was evaporated the residue triturated with 20% diethyl ether in isohexane

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

Procedure: A solution of 5-(cis-3,5-dimethyl-1-piperazinyl)-2-(methyloxy)aniline (D4) (500 mg, 2.12 mmol) in dichloromethane (30 ml) was treated with morpholinomethyl-polystyrene HL resin (1 g, 4 mmol/g loading, 4.24 mmol) followed by 4-bromo-2,5-difluorobenzene sulfonyl chloride (930 mg, 3.2 mmol). The resulting solution was stirred room temperature for 18 hours and was then filtered, washing with dichloromethane, and the filtrate concentrated in vacuo. The residue was then purified using an SCX ion exchange cartridge (Varian bond-elute) eluting with methanol followed by ammonia (0.5M to 2M in methanol). The appropriate fractions were combined and reduced in vacuo to afford a crude product which was purified further by trituration with methanol to afford the desired product D37. MS (ES+) m/e 490/492 [M+H]+. was then filtered washing with dichloromethane the filtrate concentrated in vacuo The residue was then purified an SCX ion exchange cartridge (Varian bond-elute) eluting with methanol to afford a crude product which was purified further by trituration with methanol