1: 2-Amino-3-nitro-benzoic acid With hydrogen; palladium on activated charcoal in ethanol T=20°C; 4 h; 2: formic acid With hydrogenchloride in water 2 h; Heating / reflux;
参考文献
Barber, Christopher Gordon; Bunnage, Mark Edward; Harvey, John Wilson; Mathias, John Paul
Patent: US2005/20611 A1, 2005 ;
Location in patent: Page/Page column 29 ;