HRID866870
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 a solution of diphenylmethyl 3-formyl-7-(2-thienylacetamido)-3-cephem-4-carboxylate (155 mg) in tetrahydrofuran (15 ml) is added a solution of (sulfolane-3-yl) hydrazine (70 mg) and 1.5 equivalents of hydrochloric acid in water (3 ml), and the mixture is kept at room temperature 5 hours. The crystals obtained by concentration of the reaction mixture are collected by filtration, washed with ether and water, and dried to give diphenylmethyl 3-(sulfolan-3-ylhydrazono)methyl-7-(2-thienylacetamido)-3-cephem-4-carboxylate (142 mg). m.p. 117°-125° C. Yield: 76%. IR: νmaxNujol 3275, 1785, 1715, 1675, 1530cm-1.
WORKUP
后处理
- customThe crystals obtained by concentration of the reaction mixture
- filtrationare collected by filtration
- washwashed with ether and water
- customdried