反应详情

A solution of 2-acetylamino-2-(5′-chloro-3,4,5,6-tetrahydro-2H-[1,2′]bipyridinyl-4-yl)-6-(4,4,5,5-tetramethyl-[1,3,2]-dioxaborolan-2-yl)hexanoic acid, tert-butylamide (1.07 g) in 6 N HCl (20 mL) was stirred at 90° C. for 1 day. After cooling to room temperature, the reaction mixture was transferred to a separatory funnel, diluted with deionized water (10 mL) and washed with dichloromethane (3×). The aqueous layer was frozen in liquid nitrogen and lyophilized to give title compound as a white solid (590 mg, 82%); 1H NMR (D2O, 300 MHz) δ 8.00 (d, J=2.5 Hz, 1H), 7.47 (dd, J1=9.0 Hz, J2=2.5 Hz, 1H), 6.79 (d, J=9 Hz, 1H), 4.42 (d, J=13.5 Hz, 1H), 4.32 (d, J=13 Hz, 1H), 2.79 (t, J=12 Hz, 2H), 2.06 (m, 1H), 1.78-1.94 (m, 3H), 1.55-1.70 (m, 2H), 1.43 (m, 4H), 1.30 (m, 1H) and 0.82 (t, J=7 Hz, 2H); MS (+CI): m/z for C16H25BClN3O4: expected 369.2. found 370.2 (M+H)+, 352.23 (M+H−H2O)+.

1. customthe reaction mixture was transferred to a separatory funnel
2. washwashed with dichloromethane (3×)
3. temperatureThe aqueous layer was frozen in liquid nitrogen