反应详情

Benzenesulfonyl chloride (0.26 mL, 2.03 mmol) was slowly added to an ice-cooled solution of (4-amino-phenyl)-(4-methoxy-phenyl)-methanone (178) (0.42 g, 1.85 mmol) and pyridine (0.16 mL, 2.03 mmol) in dry dichloromethane (5 mL). The reaction mixture was stirred at room temperature for 20 h then partitioned between EtOAc and water. The layers were separated and the aqueous layer was extracted with EtOAc. The organic extracts were combined, washed with brine, dried over Na2SO4, filtered, and concentrated to give a solid. The solid was recrystallized from hot dichloromethane and methanol to give 0.451 g (66%) of the title compound 182. 1H NMR (400 MHz, DMSO-d6): δ 3.82 (s, 3 H), 7.03 (d, J=8.8 Hz, 2 H), 7.22 (d, J=8.6 Hz, 2 H), 7.57-7.65 (m, 7 H), 7.84 (d, J=7.3 Hz, 2 H), 10.87 (s, 1 H).

1. customthen partitioned between EtOAc and water
2. customThe layers were separated
3. extractionthe aqueous layer was extracted with EtOAc
4. washwashed with brine
5. dry with materialdried over Na2SO4
6. filtrationfiltered
7. concentrationconcentrated
8. customto give a solid
9. customThe solid was recrystallized from hot dichloromethane and methanol