反应条件
1: orthopropionic acid triethyl ester With ytterbium(III) triflate in N,N-dimethyl acetamide
T=55°C; Inert atmosphere;
2: 3,6-diamino-2,5-dibromo-1,4-hydroquinone With pyridine in dimethyl sulfoxide
T=55°C; 2.75 h; Inert atmosphere;
参考文献
Tlach, Brian C.; Tomlinson, Aimee L.; Ryno, Alden G.; Knoble, Dawn D.; Drochner, Dana L.; Krager, Kyle J.; Jeffries-El, Malika
Journal of Organic Chemistry, 2013 , vol. 78, # 13 p. 6570 - 6581