反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
CONDITIONS
反应条件
- 温度
- 50 °C
PROCEDURE
实验过程
1-(4-Cyanonaphth-1-yl)methyl-2-isopropyl-7-nitro-6-(N-(tert-butoxycarbonyl)piperidin-4-yloxy)benzimidazole (12 g, 21 mmoL, 1 eq.) was dissolved in 400 mL dry pyridine and to this was added tin (II) chloride dihydrate (71 g, 315 mmoL, 15 eq.) which formed a finely divided suspension. The slurry was heated to 50° C. for 14 hours. The pyridine was stripped off, and the salts triturated in 1 L ethyl acetate. The salts were removed by filtration through Celite and the filtrate was concentrated to give a brown oil. Chromatography (3/2 ethyl acetate/hexanes) gave 7.6 g (67% yield) of 1-(4-cyanonaphth-1-yl)methyl-2-isopropyl-7-amino-6-(N-(tert-butoxycarbonyl)piperidin-4-yloxy)benzimidazole as a tan foam.
WORKUP
后处理
- customformed a finely divided suspension
- customthe salts triturated in 1 L ethyl acetate
- customThe salts were removed by filtration through Celite
- concentrationthe filtrate was concentrated
- customto give a brown oil