反应条件
1: 1) n-butyllithium / 1) THF, cyclohexane, -45 deg C to -40 deg C, 2) a) -60 deg C to room temperature, b) 35 deg C to 40 deg C, 20 min
2: 1) n-butyllithium / 1) THF, cyclohexane, -40 deg C, 2) a) -65 deg C to room temperature, 3h, b) 35 deg C, 20 min
3: 155 °C
View Scheme
参考文献
Loewenthal, H. J. E.; Gottlieb, L.
Journal of Organic Chemistry, 1992 , vol. 57, # 9 p. 2631 - 2641