反应条件
1.1: bromine / ethyl acetate / 1 h / 20 °C
1.2: 2.5 h / 0 - 20 °C
2.1: N,N-dimethyl-formamide; dimethyl sulfate / N,N-dimethyl-formamide / 0.25 h / 20 °C / |Inert atmosphere
2.2: |Inert atmosphere
View Scheme
参考文献
Li, Hao; Xia, Zhiqiang; Chen, Shoujun; Koya, Keizo; Ono, Mitsunori; Sun, Lijun
Organic Process Research and Development, 2007 , vol. 11, # 2 p. 246 - 250