反应条件
1: 1.) 2.55M n-butyllithium, TMEDA / 1.) ether, hexane, reflux, 15h, 2.) THF 2: 70 percent / pyridinium chlorochromate / CH2Cl2 / 2 h 3: 83 percent / p-toluenesulfonic acid, methanol / benzene / 1.5 h / Ambient temperature 5: 1.) TiCl3, Zu/Cu couple / 1.) DME, 1h, reflux, 2.) DME, 4h, reflux View Scheme
参考文献
Tetrahedron, , vol. 43, # 23 p. 5489 - 5498
