1: in N,N-diethylaniline T=200°C; 48 h; 2: With hydrogenchloride; water in methanol T=20°C; Reflux; 3: With sodium hydrogencarbonate; sodium hydroxide in water
参考文献
pfizer Inc
Patent: US2010/197591 A1, 2010 ;
Location in patent: Page/Page column 45 ;
US 20100197591 A1