HRID1792610

反应详情

EQUATION

反应方程式

HRID 1792610 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

0.82 g ethyl 2-fluoro-4-[6-(1-trityl-1H-pyrazol-4-yl)-quinazolin-4-yl]benzoate (compound in Example 752) was dissolved in 30 mL solvent mixture of ethanol and water (2:1), then 0.11 g lithium hydroxide was added thereto, and the mixture was heated for 5 hours under reflux. The reaction solution was neutralized under ice-cooling. The solution was extracted with dichloromethane and recrystallized from ethanol/ether, to give 570 mg of the title compound as pale yellow crystals.

WORKUP

后处理

  1. temperaturethe mixture was heated for 5 hours
  2. temperatureunder reflux
  3. temperaturecooling
  4. extractionThe solution was extracted with dichloromethane
  5. customrecrystallized from ethanol/ether