HRID1792609

反应详情

EQUATION

反应方程式

HRID 1792609 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

3

PROCEDURE

实验过程

0.64 g ethyl 4-(6-chloroquinazolin-4-yl)-2-fluorobenzoate (compound in Production Example 385), 1.02 g 1-trityl-1H-4-pyrazolylboronic acid, 0.34 g potassium fluoride, 43 mg palladium (II) acetate, 0.11 g 2-(di-t-butylphosphino)biphenyl, 20 mL N,N-dimethylformamide and 2 mL water were heated at 70° C. for 24 hours under nitrogen atmosphere. Water was added thereto, the reaction solution was filtered, and crystals collected by filtration were washed with water. The crystals were dissolved in dichloromethane, washed with water and dried over sodium sulfate. The solvent was evaporated, and the residue was purified by NH silica gel column chromatography (hexane/ethyl acetate), to give 0.82 g of the title compound (pale yellow crystals).

WORKUP

后处理

  1. filtrationthe reaction solution was filtered
  2. filtrationcrystals collected by filtration
  3. washwere washed with water
  4. dissolutionThe crystals were dissolved in dichloromethane
  5. washwashed with water
  6. dry with materialdried over sodium sulfate
  7. customThe solvent was evaporated
  8. customthe residue was purified by NH silica gel column chromatography (hexane/ethyl acetate)