HRID244893

反应详情

EQUATION

反应方程式

HRID 244893 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

3

PROCEDURE

实验过程

To a solution of compounds 5-bromo-3-[(trans-4-hydroxy-cyclohexyl)-(trans-4-methyl-cyclohexanecarbonyl)-amino]-thiophene-2-carboxylic acid methyl ester (500 mg, 1.09 mmol) and 3,3-Dimethyl-but-1-yne (385 mg, 4.69 mmol) in DMF (0.5 mL), triethylamine (1.06 mL) and tris(dibenzylideneacetone)dipalladium (0) (70 mg, 0.08 mmol) are added and the reaction mixture is stirred under reflux conditions for 16 h under a N2 atmosphere. DMF and triethylamine are removed under reduced pressure and the residue is partitioned between water and ethyl acetate. The organic layer is separated, dried (Na2SO4), concentrated and the residue is purified by column chromatography using ethyl acetate and hexane (1:2) as eluent to obtain 5-(3,3-dimethyl-but-1-ynyl)-3-[(trans-4-hydroxy-cyclohexyl)-(trans-4-methyl-cyclohexanecarbonyl)-amino]-thiophene-2-carboxylic acid methyl ester as a solid, 330 mg (66%).

WORKUP

后处理

  1. customDMF and triethylamine are removed under reduced pressure
  2. customthe residue is partitioned between water and ethyl acetate
  3. customThe organic layer is separated
  4. dry with materialdried (Na2SO4)
  5. concentrationconcentrated
  6. customthe residue is purified by column chromatography