反应条件
1: 1) n-BuLi / 1) ether, 0 deg C, 1 h; 2) 8 h 2: ethyl chloroformate, NaHCO3 / benzene / 0.25 h 3: dimethylformamide / 20 h 4: 1) KOH; 2) HCl / 1) methanol, water, reflux, 1.5 h; 2) water, 2 h 5: 70 percent / ethanol / 4.5 h / Ambient temperature 6: 1) PCl5; 2) NaBH4 / 1) CHCl3, room t., 20 min; 2) MeOH, 1.5 h View Scheme
参考文献
Narasimhan, N.S.; Mali, R.S.; Kulkarni, B.K.
Tetrahedron Letters, 1981 , vol. 22, # 29 p. 2797 - 2798
