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
CONDITIONS
反应条件
- 温度
- 75 °C
PROCEDURE
实验过程
Bromide 84 (1.8 g, 1.12 mmol), KSCN (3 equiv., 326 mg), molecular sieves and Bu4NI (cat.) were taken up in dry acetonitrile and stirred at 75° C. overnight. The solvent was evaporated and the residue taken up in DCM and washed with NaHCO3(sat.), before being dried (Na2SO4) and the solvent was evaporated. The crude product was purified using column chromatography (SiO2:Hexane to 35% EtOAc/Hexane, loaded with toluene) to yield 1.15 g of the white solid product (65%). 1H NMR (400 MHz, CDCl3) δ: 8.23-7.12 (m, 50H, Ar), 6.16 (dd, 1H, J3,2=9.6, J3,4=9.6, H-3III), 5.96 (dd, 1H, J3,2=9.6, J3,4=8.2, H-3II), 5.81 (d, 1H, J1,2=4.1, H-1III), 5.75-5.68 (m, 2H, H-3I, H-4III), 5.65 (d, 1H, J1,2=4.1, H-1II), 5.40 (dd, 1H, J2,1=8.2, J2,3=8.2, H-2I), 5.32 (dd, 1H, J2,1=4.1, J2,3=10.2, H-2III), 5.28 (d, 1H, J1,2=8.2, H-1I), 5.13 (dd, 1H, J2,1=4.1, J2,3=10.2, H-2II), 5.00 (dd, 1H, H-6I), 4.77 (dd, 1H, H-6II), 4.72-4.65 (m, 2H, H-6I, H-6II), 4.53-4.41 (m, 5H, H-5II, H-5III, H-4I, H-1II, H-6III), 4.30 (dd, 1H, H-6III), 4.13 (ddd, 1H, H-5I).
WORKUP
后处理
- customThe solvent was evaporated
- washwashed with NaHCO3(sat.)
- dry with materialbefore being dried (Na2SO4)
- customthe solvent was evaporated
- customThe crude product was purified