HRID1725912
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
产物
AUXILIARIES
试剂、催化剂与溶剂
CONDITIONS
反应条件
- 温度
- 90 °C
PROCEDURE
实验过程
A mixture of Example 126A (1.4 g, 3.3 mmol), DMF (33 mL) and tributyl(vinyl)tin (1.1 mL, 3.8 mmol) was degassed with argon 30 minutes, treated with Pd(PPh3)4 (577 mg, 0.5 mmol), heated to 90° C. for 18 hours, and concentrated. The concentrate was purified by flash column chromatography on silica gel (200 g) with 50% dichloromethane/hexanes to provide the desired product. MS (ESI(+)) m/e 368 (M+H)+; (ESI(−)) m/e 366 (M−H)−; 1H NMR (300 MHz, DMSO-d6) δ 8.87 (s, 1H), 7.54 (d, 1H), 7.45 (m, 2H), 7.37 (m, 3H), 7.27 (d, 1H), 6.94 (dd, 1H), 5.64 (dd, 1H), 5.31 (dd, 1H), 5.27 (s, 2H), 2.21 (s, 3H), 1.42 (s, 9H).
WORKUP
后处理
- concentrationconcentrated
- customThe concentrate was purified by flash column chromatography on silica gel (200 g) with 50% dichloromethane/hexanes