HRID1458423

反应详情

EQUATION

反应方程式

HRID 1458423 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

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

  1. customformed a finely divided suspension
  2. customthe salts triturated in 1 L ethyl acetate
  3. customThe salts were removed by filtration through Celite
  4. concentrationthe filtrate was concentrated
  5. customto give a brown oil