1: With sulfuric acid in nitrobenzene T=140°C; 6 h; 2: With sodium hydroxide in water pH=6 - 7;
参考文献
VARINEL INC; ZURAWSKI JR, Vincent R.; STOUT, David M.; NITZ, Theodore J.
Patent: WO2012/20389 A1, 2012 ;
Location in patent: Page/Page column 40-41 ;
WO 2012/020389 A1
