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HRID264821

反应详情

EQUATION

反应方程式

HRID 264821 的结构方程式

REACTANTS

反应物

3
结构：CCO
HCID702

Ethanol

C2H6O

结构：O=S(=O)(O)O
HCID1118

Sulfuric acid

H2O4S

结构：O=C(O)C1=CC(CF)(CF)Oc2ccc([N+](=O)[O-])cc21
HCID21194987

未命名化合物

PRODUCTS

生成物

1
结构：CCOC(=O)C1=CC(CF)(CF)Oc2ccc([N+](=O)[O-])cc21
HCID19037092

未命名化合物

PROCEDURE

实验过程

A mixture of 41.7 of 2,2-bisfluoromethyl-6-nitro-2H-1-benzopyran-4-carboxylic acid, 20 ml of sulfuric acid and 300 ml of ethyl alcohol was heated under refluxing for 6 hours. The reaction mixture was poured into ice-water, and the precipitated crystals were separated by filtration to obtain 42.7 g of ethyl 2,2-bisfluoromethyl-6-nitro-2H-1-benzopyran-4-carboxylate having a melting point of 96°-98° C.

WORKUP

后处理

  1. temperaturewas heated
  2. temperatureunder refluxing for 6 hours
  3. customthe precipitated crystals were separated by filtration