1: With hydrazine in ethanol T=0 - 20°C; 2.5 h; 2: With acetic acid; sodium nitrite in ethanol; water 1 h; 3: With sodium hydrogencarbonate in ethanol; water
参考文献
NOVARTIS AG
Patent: WO2008/125627 A1, 2008 ;
Location in patent: Page/Page column 54 ;
WO 2008/125627 A1
