反应条件
1: 1) diisopropylamine, n-BuLi
2: 81 percent / triphenylcarbenium tetrafluoroborate / CH2Cl2 / 1) 0 deg C, 2 h, 2) room temp., 0.5 h
3: 56 percent / sodium formate / 1) 70-75 deg C, 3 h, 2) room temp., 1 h
4: 1) THF, -78 - 0 deg C, 2) CDCl3, 140 deg C, 1 h
View Scheme
参考文献
Saengchantara, Suthiweth T.; Wallace, Timothy W.
Tetrahedron, 1990 , vol. 46, # 18 p. 6553 - 6564