反应条件
1: 1) NBS, 2) DBU / 1) CCl4, reflux, 2 h, 2) THF, CH2Cl2, reflux, 1 h
2: DBU / tetrahydrofuran / 7 h / Heating
View Scheme
参考文献
Duke, Colin C.; Murphy, Peter T.; Holder, Gerald M.
Journal of Organic Chemistry, 1984 , vol. 49, # 23 p. 4446 - 4451
