反应条件
1: 1.) n-BuLi, diisopropylamine, 2.) 20percent aq. H2SO4 / 1.) Hexane, THF, -50 deg C, from 45 to 60 min, 2.) THF, MeOH, RT
2: 1.) pyridine, phosphorus tribromide, 2.) DBN / 1.) CHCl3, 0 deg C, 6 h, 2.) CHCl3, toluene, reflux, 30 min
View Scheme
参考文献
Sheng, Shou-Ri; Huang, Pei-Gang; Zhou, Wei; Luo, Hai-Rong; Lin, Shu-Ying; Liu, Xiao-Ling
Synlett, 2004 , # 14 p. 2603 - 2605