1: 2,4,6-trichloro-pyrimidine With n-butyllithium; diisopropylamine in tetrahydrofuran
T=-78°C;
2: carbon dioxide in tetrahydrofuran
T=20°C; 1 h;
3: With hydrogenchloride in tetrahydrofuran; water
参考文献
Takeda Pharmaceutical Company Limited
Patent: US2011/152273 A1, 2011 ;
Location in patent: Page/Page column 34 ;