反应条件
1: conc. H2SO4 / 1.) RT, 30 min, 2.) reflux, 1 h
2: pyridine / 0 °C
3: 60 percent / MgBr2, 1,2-dibromoethane / diethyl ether / Ambient temperature
4: 53 percent / MgI2 / acetone / Heating
5: t-BuOK / tetrahydrofuran
View Scheme
参考文献
Okabe, Masami; Tada, Masaru
Bulletin of the Chemical Society of Japan, 1982 , vol. 55, # 5 p. 1498 - 1503