HRID81205
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
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
- temperatureThe mixture was heated
- temperatureto reflux with a Dean-Stark trap for 14 h
- customwas consumed
- customThe solvent was removed under reduced pressure
- customThe residue was purified by column chromatography (petroleum ether)