Sulfuric Acid → chrysanthemic acid d-trans-form

HRID 267571

反応式

HRID 267571 の反応式
CC[O:3][C:4]([CH:6]1[C:8]([CH3:10])([CH3:9])[CH:7]1[CH:11]=[C:12]([CH3:14])[CH3:13])=[O:5].S(=O)(=O)(O)O>>[CH3:13][C:12]([CH3:14])=[CH:11][C@H:7]1[C:8]([CH3:9])([CH3:10])[C@@H:6]1[C:4]([OH:5])=[O:3]

参加物

3

反応物 2

HCID 1118Sulfuric AcidHCID 7334Ethyl chrysanthemate

生成物 1

HCID 16747chrysanthemic acid d-trans-form収率 80.5%

実験手順

The water layer was made acidic with sulfuric acid and extracted with toluene (80 g) two times. The toluene layer was washed and evaporated, and the residue was distilled under reduced pressure to give trans-chrysanthemic acid (47.1 g; trans-isomer, 80.5 %). B.P. 110° to 114°C/2 mmHg.

後処理

  1. extractionextracted with toluene (80 g) two times
  2. washThe toluene layer was washed
  3. customevaporated
  4. distillationthe residue was distilled under reduced pressure

出典と根拠

ORDレコード
ord-3556e4eb9bea4bf1a3c659a1dcdfbbb2
出典データセット
uspto-grants-1976_03
特許番号
US03943167

関連ノート

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