HRID1852812

反应详情

EQUATION

反应方程式

HRID 1852812 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

p-TsOH.H2O (3.4 g, 0.018 mol) was added to a mixture of tert-butyl (3-amino-2,6-dichloropyridin-4-yl)carbamate (85 g, 0.306 mol) and 1-(trans-4-methylcyclohexyl)ethanone (64 g, 0.46 mol) in toluene (1.3 L). The mixture was heated to reflux with a Dean-Stark trap for 14 h. TLC (petroleum/ethyl acetate=5:1) showed about ⅔ of tert-butyl (3-amino-2,6-dichloropyridin-4-yl)carbamate was consumed. The solvent was removed under reduced pressure. The residue was purified by column chromatography (petroleum ether) to give crude tert-butyl (2,6-dichloro-3-((1-(trans-4-methylcyclohexyl)ethylidene)amino)pyridin-4-yl)carbamate.

WORKUP

后处理

  1. temperatureThe mixture was heated
  2. temperatureto reflux with a Dean-Stark trap for 14 h
  3. customwas consumed
  4. customThe solvent was removed under reduced pressure
  5. customThe residue was purified by column chromatography (petroleum ether)