反应条件
1: 1.) 1.6 M butyllithium / 1.) THF, hexane, -78 deg C, 15 min; 2.) THF, allowed to r.t. during 30 min
2: 66.7 percent / ethyl acetate / 5 h / 95 - 100 °C
3: 71.6 percent Chromat. / triethylamine / CH2Cl2 / 1 h
View Scheme
参考文献
Ohta, Shunsaku; Hayakawa, Satoshi; Moriwaki, Hiroki; Harada, Suzumi; Okamoto, Masao
Chemical and Pharmaceutical Bulletin, 1986 , vol. 34, # 12 p. 4916 - 4926