反应条件
1: 4.4 g / 70percent HClO4 / CCl4 / 1 h / Ambient temperature
2: 1.) Br2, CaCO3, 2.) LiBr, Li2CO3 / 1.) chloroform, water, 1 h, R.T., 2.) DMF, reflux, 45 min.
View Scheme
参考文献
Becker, Dan; Birnbaum, Dov
Journal of Organic Chemistry, 1980 , vol. 45, # 4 p. 570 - 578
