HRID345258
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
Ortho-nitrobenzyl glyoxalate prepared from (0.650 g, 0.00153 mole) of di-o-nitrobenzyl tartarate, is dissolved in 20 ml benzene and refluxed using a Dean-Stark water separator containing CaH2 for an hour. Trans-3-(1-o-nitrobenzyloxycarbonylaminoethyl)-4-(2-acetoxyethyl)-2-azetidinone (0.580 g, 0.00153 mole) is added and the mixture is refluxed for 8 hrs, cooled, evaporated. The residue is column chromatographed (silica gel, ##STR222## to give 0.775 g (0.00132 mole, 87% yield) of the product.
WORKUP
后处理
- temperaturerefluxed
- additionseparator containing CaH2 for an hour
- temperaturethe mixture is refluxed for 8 hrs
- temperaturecooled
- customevaporated
- customchromatographed (silica gel, ##STR222##