(2-bromophenyl)methanesulfonyl chloride

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

Procedure: By using 5-(4-aminophenyl)-1H-naphtho[1,2-b][1,4]diazepine-2,4(3H,5H)-dione obtained in Example 1, (3), and (2-bromophenyl)methanesulfonyl chloride, the title compound (yield 46%) was obtained in the same manner as that of Example 145.

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

Procedure: To a solution of (2-bromophenyl)methanesulfonyl chloride (2 g, 7 mmol) in THF (15 mL) was added CH3NH2/H2O (25%, 2 g, 20 mmol) at 0° Celsius. The resulting mixture was warmed up to rt, stirred for 16 hours, concentrated to dryness and purified by HPLC to give the title compound (0.8 g, 41%). MS (ESI): mass calcd. for C8H8BrO2S, 262.96; m/z found, 264.0 [M+H]+; 1H NMR (300 MHz, CDCl3) δ 7.65-7.54 (m, 2H), 7.35 (m, 1H), 7.22 (dd, J=7.6, 1.7, 1H), 4.53 (s, 2H), 4.10 (s, 1H), 2.72 (s, 3H). concentrated to dryness purified by HPLC

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a suspension of crude sodium (2-bromophenyl)methanesulfonate (34 g) in toluene (500 mL) was added PCl5 (34 g, 0.16 mol). The resulting mixture was stirred at 100° Celsius for 4 hours before concentrating to dryness and pouring the residue onto crushed ice (150 g), stirring for 5 min, and extracting with DCM (3×50 mL). The combined organic extracts were dried over MgSO4, filtered and concentrated to dryness to give (2-bromophenyl)methanesulfonyl chloride (16.8 g, 77%). 1H NMR (300 MHz, DMSO-d6) δ 7.62-7.45 (m, 2H), 7.29 (m, 1H), 7.18-7.01 (m, 1H), 3.97 (s, 2H). before concentrating to dryness pouring the residue onto crushed ice (150 g) stirring for 5 min extracting with DCM (3×50 mL) The combined organic extracts were dried over MgSO4 filtered concentrated to dryness

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

Procedure: By using 5-(4-aminophenyl)-1H-naphtho[1,2-b][1,4]diazepine-2,4(3H,5H)-dione obtained in Example 1, (3), and (2-bromophenyl)methanesulfonyl chloride, the title compound (yield 46%) was obtained in the same manner as that of Example 145.