反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
To a mixture of #46 (500 mg, 0.504 mmol, 1 eq.) in tetrahydrofuran (8 mL, 0.06 M) was added diethylamine (4 mL). After stirring for 18 hours, the reaction mixture was concentrated in vacuo and the residue was purified by silica gel chromatography (Gradient: 0% to 10% methanol in dichloromethane) to give #47 (374 mg, 96%) as a white solid. LC-MS: m/z 769.6 [M+H+], retention time=0.70 minutes; 1H NMR (400 MHz, DMSO-d6), presumed to be a mixture of rotamers, characteristic signals: δ [8.64 (br d, J=8.4 Hz) and 8.87 (br d, J=8.6 Hz), total 1H], [8.22 (br d, J=9.4 Hz) and 8.26 (br d, J=9.4 Hz), total 1H], [7.77 (d, J=3.3 Hz) and 7.80 (d, J=3.3 Hz), total 1H], [7.63 (d, J=3.1 Hz) and 7.66 (d, J=3.3 Hz), total 1H], 7.13-7.31 (m, 5H), [5.39 (ddd, J=11.1, 8.5, 4.2 Hz) and 5.54 (ddd, J=11.7, 8.8, 4.1 Hz), total 1H], [4.53 (dd, J=9.2, 7.6 Hz) and 4.64 (dd, J=9.2, 6.6 Hz), total 1H], 3.16, 3.20, 3.21 and 3.25 (4 s, total 6H), 2.93 and 3.03 (2 br s, total 3H), [1.05 (d, J=6.8 Hz) and 1.10 (d, J=6.6 Hz), total 3H], 0.73-0.80 (m, 3H).
WORKUP
后处理
- concentrationthe reaction mixture was concentrated in vacuo
- customthe residue was purified by silica gel chromatography (Gradient: 0% to 10% methanol in dichloromethane)