1: With pyridine in N,N-dimethyl-formamide 6 h; Inert atmosphereCooling with ice-cold bath; 2: With potassium tert-butylate in dimethyl sulfoxide T=20°C; 5 h; 3: With hydrogenchloride in water; dimethyl sulfoxide
参考文献
ZENTIVA, K.S.; RADL, Stanislav; STACH, Jan
Patent: WO2012/139535 A1, 2012 ;
Location in patent: Page/Page column 17-18 ;