反应条件
1: 91 percent / 1,4-diazabicyclo<2.2.2>octane, n-butyllithium / tetrahydrofuran; hexane / 0 degC for 15 min and room t. for 1.5 h, then 0 degC, 1 h, room t., 1 h
2: 96 percent / p-toluenesulfonic acid / benzene / 7 h / Heating
View Scheme
参考文献
Hiroi, Kunio; Sato, Hiroyasu; Chen, Lih-Ming; Kotsuji, Kumiko
Chemical and Pharmaceutical Bulletin, 1987 , vol. 35, # 4 p. 1413 - 1426