HRID1443990

反应详情

EQUATION

反应方程式

HRID 1443990 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

4-Hydroxybenzoic acid tert butyl ester (0.13 g), N-(5-bromo-3-methoxy-2-pyrazinyl)-2,3-dichloro-N-[{2-(trimethylsilanyl)ethoxy}methyl]benzenesulphonamide (Example 55 part a) (0.35 g) and caesium carbonate (0.42 g) in acetonitrile (10 mL) was heated at 50° C. After 12 h, the mixture was diluted with ethyl acetate, washed with water, dried (MgSO4) and evaporated. Chromatography on silica gel eluting with ethyl acetate/isohexane mixtures gave the title compound protected with the SEM group and tert butyl group as an oil. The oil was dissolved in trifluoroacetic acid (2.0 mL) and stirred at room temperature for 3 h.

WORKUP

后处理

  1. washwashed with water
  2. dry with materialdried (MgSO4)
  3. customevaporated