HRID1588197

反应详情

EQUATION

反应方程式

HRID 1588197 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

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

  1. temperaturethe suspension was heated
  2. temperatureunder gentle reflux for 2 h
  3. customA yellow solid separated which
  4. filtrationwas filtered hot
  5. washwashed with small portions of boiling methanol and ethyl acetate