HRID722864

反应详情

EQUATION

反应方程式

HRID 722864 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

To alcohol 103 (1.98 g, 8.1 mmol) in CH2Cl2 (40 mL) at room temperature was added triethylamine (2.4 g, 0.024 mol), DMAP (20 mg) and tosyl chloride (2.3 g, 0.012 mol). After 14 hours 1N HCl was added and the two layers separated. The aqueous phase was extracted with ether and the combined organic phases dried (MgSO4) and concentrated. Flash chromatography (95% hexane/EtOAc) gave tosylate 104 as an oil (2.94 g, 91%). 13C NMR (100 MHz; CDCl3) 171.60, 144.92, 133.07, 130.02, 128.12, 80.80, 72.15, 39.73, 38.09, 37.89, 32.67, 29.71, 28.22, 21.83, 20.10, 19.54, 14.49.

WORKUP

后处理

  1. customthe two layers separated
  2. extractionThe aqueous phase was extracted with ether
  3. dry with materialthe combined organic phases dried (MgSO4)
  4. concentrationconcentrated