HRID1588197
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 stirred suspension of 4-formyl-2-=methoxyphenyl β-D-galactopyranoside (1c)(0.47 g, 1.5 mmol) in absolute ethanol (25 ml) containing piperidine (1 drop), was added the potassium salt of 3-(4-carboxyphenyl)-2-thioxothiazolidin-4-one (0.44 g, 1.5 mmol) and the suspension was heated under gentle reflux for 2 h. A yellow solid separated which was filtered hot and washed with small portions of boiling methanol and ethyl acetate followed by ether to give the product (0.2 g, 22%) as the potassium salt, m.p. decomp.>230° C.
WORKUP
后处理
- temperaturethe suspension was heated
- temperatureunder gentle reflux for 2 h
- customA yellow solid separated which
- filtrationwas filtered hot
- washwashed with small portions of boiling methanol and ethyl acetate