反应详情

A solution of 1.1 (2.0 g) in DCM (10 mL) in an ice-bath, was treated with thionyl chloride (10 mL). The reaction mixture was stirred at room temperature for 2 hours. The reaction mixture was then poured into ice water and extracted with EtOAc. The organic layer was dried (MgSO4), filtered, and concentrated under vacuum. The resulting material was chromatographed on a silica gel column, eluting with 5-10% EtOAc in hexane, to afford 1.2. 1H NMR (DMSO-d6) δ 7.54 (s, 1H), 7.45 (dd, 1H, J1=1.0 Hz, J2=8.50 Hz), 7.37 (d, 1H, J=8.0 Hz), 3.07 (m, 1H), 5.60 (q, 1H), 2.93 (m, 1H), 2.59 (m, 1H), 2.26 (m, 1H).

1. extractionextracted with EtOAc
2. dry with materialThe organic layer was dried (MgSO4)
3. filtrationfiltered
4. concentrationconcentrated under vacuum
5. customThe resulting material was chromatographed on a silica gel column
6. washeluting with 5-10% EtOAc in hexane
7. customto afford 1.2