HRID1905112
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
PROCEDURE
实验过程
To an ice-cooled solution containing the product obtained in Step 1 (3.0 g) and (6R,7R)-7-amino-3-[(2-diphenylmethyloxycarbonyl-5-methyl-s-triazolo[1,5-a]pyrimidin-7-yl)thiomethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester (3.75 g) in dichloromethane (100 ml) was added dicyclohexylcarbodiimide (1.54 g), and the mixture was stirred at room temperature. After filtering off the insoluble matters, the filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography, giving 4.8 g of the objective compound.
WORKUP
后处理
- filtrationAfter filtering off the insoluble matters
- concentrationthe filtrate was concentrated under reduced pressure
- customthe residue was purified by silica gel column chromatography