反应条件
1: diethyl azodicarboxylate (DEAD), Ph3P / tetrahydrofuran / 17 h / 60 °C
2: 97 percent / DMAP, Et3N / CH2Cl2 / 2 h / Ambient temperature
3: 49.5 percent / K2CO3, 18-crown-6 / dimethylformamide / 20 h / 120 °C
4: 78 percent / BCl3 / hexane; CH2Cl2 / 1.) -78 deg C, 2.5 h; 2.) -18 deg C, 4 h
View Scheme
参考文献
Kakefuda, Akio; Shuto, Satoshi; Nagahata, Takemitsu; Seki, Jun-Ichi; Sasaki, Takuma; Matsuda, Akira
Tetrahedron, 1994 , vol. 50, # 34 p. 10167 - 10182
