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
CONDITIONS
反应条件
- 温度
- 0 °C
PROCEDURE
实验过程
A suspension of NaH (washed free of mineral oil) in DMF (40 mL) was cooled to 0° C. and a solution of phenol (5.65 g, 60 mmol) in DMF (20 mL) was added dropwise. Upon completion of addition, 6-iodo-4-chloroquinazoline (14.6 g, 50.3 mmol) was added as a solid in small portions. The cooling bath was moved and the reaction mixture was stirred at room temperature for 2 hours. The mixture was then quenched with water (200 mL), diluted with EtOAc (300 mL) and transferred to a separatory funnel. The organic layer was washed with dilute aqueous NaOH, water and brine and dried over Na2SO4. Filtration of the solids and removal of the solvent provided quinazoline 13 (17.2 g, 98%) as a yellow solid. 1H NMR (400 MHz; CDCl3): δ 8.74 (d, 1H), 8.14 (s, 1H), 8.12 (dd, 1H), 7.71 (d, 1H), 7.49 (dd, 2H), 7.32 (t, 1H), 7.22 (m, 2H).
WORKUP
后处理
- additionwas added as a solid in small portions
- customThe mixture was then quenched with water (200 mL)
- additiondiluted with EtOAc (300 mL)
- customtransferred to a separatory funnel
- washThe organic layer was washed with dilute aqueous NaOH, water and brine
- dry with materialdried over Na2SO4
- filtrationFiltration of the solids and removal of the solvent