反应条件
1.1: acetic acid; water / tetrahydrofuran / 2.5 h / 5 °C 2.1: 3,5-dimethyl pyridine / dichloromethane / 1.17 h / 0 - 5 °C / |Inert atmosphere 2.2: 1 h / 0 - 5 °C / |Inert atmosphere 3.1: sulfuric acid; water / tetrahydrofuran / -5 - 0 °C View Scheme
参考文献
Chunghwa Chemical Synthesis and Biotech Co., Ltd.; LEE, Kwang-Chung; TUNG, Yen-Shih; LEE, Tzu-Ai; SHIH, Yu-Hsuan
Patent: US2014/58081 A1, 2014 ;
