HRID888674

反应详情

EQUATION

反应方程式

HRID 888674 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

To a solution of iodine (198.4 mg, 0.78 mmol) in CH2Cl2/MeOH (9:1, 272 mL) was added dropwise a solution of 6A (79.4 mg, 0.08 mmol) in CH2Cl2/MeOH (9:1) (134 mL) over 30 min, the reaction mixture was then allowed to stir for a further 30 min after which time sodium thiosulfate (88 mL, 0.05 M) was added. The layers were separated and the product was extracted with CH2Cl2 (3×45 ml) dried (MgSO4) and the solvent was removed in vacuo. Purification was then carried out by column chromatography on silica gel (eluent 3:97 MeOH/CH2Cl2) which gave 7A (30 mg, mmol, 68%) as a white solid: Rf 0.19 CH2Cl2/MeOH (97:3); [α]26D=−83.7 (c 0.38, MeOH).

WORKUP

后处理

  1. additionwas added
  2. customThe layers were separated
  3. extractionthe product was extracted with CH2Cl2 (3×45 ml)
  4. dry with materialdried (MgSO4)
  5. customthe solvent was removed in vacuo
  6. customPurification