3,4-噻吩二羧酸 → 3,4-噻吩二羧酸酐

HRID 1770319

反应方程式

HRID 1770319 反应方程式
[S:1]1[CH:5]=[C:4]([C:6]([OH:8])=O)[C:3]([C:9]([OH:11])=[O:10])=[CH:2]1>C(OC(=O)C)(=O)C>[S:1]1[CH:2]=[C:3]2[C:9]([O:11][C:6](=[O:8])[C:4]2=[CH:5]1)=[O:10]

参与物

3

反应物 1

HCID 2558533,4-噻吩二羧酸

产物 1

HCID 3156083,4-噻吩二羧酸酐收率 98%

试剂、催化剂与溶剂 1

HCID 7918乙酐溶剂

实验过程

Thiophene-3,4-dicarboxylic acid (12 g, 0.07 mol) is dissolved in acetic anhydride (60 ml) and heated at the boil for 2.5 hours. The mixture is then evaporated to dryness. 10.55 g (98%) of thiophene-3,4-dicarboxylic anhydride (mp. 147° to 149° C.) are obtained.

后处理

  1. temperatureheated at the boil for 2.5 hours
  2. customThe mixture is then evaporated to dryness

来源与证据

ORD记录
ord-606ee7117db8452a930878c7e26b9fdd
来源数据集
uspto-grants-1995_01
专利号
US05386036

关联笔记

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