1: 5-bromo-1H-indazole With n-butyllithium in tetrahydrofuran T=-78 - -40°C; 1 h; 2: N,N-dimethyl-formamide in tetrahydrofuran T=-78 - 20°C; 2.5 h; 3: With water in tetrahydrofuran
参考文献
NOVARTIS VACCINES AND DIAGNOSTICS, INC.
Patent: WO2007/124288 A1, 2007 ;
Location in patent: Page/Page column 50 ;
WO 2007/124288 A1