HRID1789840

反应详情

EQUATION

反应方程式

HRID 1789840 的结构方程式

PROCEDURE

实验过程

Triethylamine (0.279 mL, 2.0 mmol) was added to a solution of 2-(6-[N,N-bis(tert-butoxycarbonyl)amino]-4-methyl-pyridin-3-ylmethyl)-acrylic acid ethyl ester (0.8 g, 1.9 mmol) in thioacetic acid (3 mL) at 0° C. The mixture was stirred at room temperature for 16 h. Ethyl acetate was added and the organic phase was washed with water, saturated NaHCO3 and brine and dried. The crude product was purified by flash chromatography (toluene/ethyl acetate, 3:1→1:2) to give pure 2-acetylsulfanylmethyl-3-(6-[N,N-bis(tert-butoxycarbonyl)amino]-5-methyl-pyridin-3-yl)-propionic acid ethyl ester (200 mg, 21%) and slightly impure 2-acetylsulfanylmethyl-3-(6-[N,N-bis(tert-butoxycarbonyl)amino]-4-methyl-pyridin-3-yl)-propionic acid ethyl ester (0.68 g).

WORKUP

后处理

  1. washthe organic phase was washed with water, saturated NaHCO3 and brine
  2. customdried
  3. customThe crude product was purified by flash chromatography (toluene/ethyl acetate, 3:1→1:2)