Ethanol → 4-[1-(Acetyloxy)-2,2,2-trifluoro-1-(trifluoromethyl)ethyl]benzaldehyde

HRID 4743ノート

反応式

HRID 4743 の反応式
C(O)C.C([O:7][CH:8](OC(=O)C)[C:9]1[CH:14]=[CH:13][C:12]([C:15]([O:24][C:25](=[O:27])[CH3:26])([C:20]([F:23])([F:22])[F:21])[C:16]([F:19])([F:18])[F:17])=[CH:11][CH:10]=1)(=O)C.S(=O)(=O)(O)O>O>[C:25]([O:24][C:15]([C:12]1[CH:11]=[CH:10][C:9]([CH:8]=[O:7])=[CH:14][CH:13]=1)([C:16]([F:19])([F:18])[F:17])[C:20]([F:21])([F:23])[F:22])(=[O:27])[CH3:26]

参加物

5

反応物 3

HCID 702EthanolHCID 1118Sulfuric AcidHCID 14076668alpha,alpha-Bis-acetyloxy-4-[1-(acetyloxy)-2,2,2-trifluoro-1-(trifluoromethyl)ethyl]toluene

生成物 1

HCID 201518544-[1-(Acetyloxy)-2,2,2-trifluoro-1-(trifluoromethyl)ethyl]benzaldehyde収率 89.1%

試薬・触媒・溶媒 1

HCID 962Water溶媒

実験手順

To 130 ml of ethanol are added 60 g (0.15 mole) of α,α-bis-acetyloxy-4-[1-(acetyloxy)-2,2,2-trifluoro-1-(trifluoromethyl)ethyl]toluene and 13.5 ml of concentrated sulfuric acid in 135 ml of water. The resulting solution is stirred and heated at reflux for thirty minutes. The solution is then cooled and extracted with 1 liter of ether to obtain an ether solution which is washed with water and a saturated sodium bicarbonate solution until the washes were basic. The ether solution is dried with anhydrous magnesium sulfate, filtered and evaporated at reduced pressure to give 42 g of 4-[1-(acetyloxy)-2,2,2-trifluoro-1-(trifluoromethyl)ethyl]benzaldehyde. This compound was not further purified but was used directly in the next step.

後処理

  1. temperatureheated
  2. temperatureat reflux for thirty minutes
  3. temperatureThe solution is then cooled
  4. extractionextracted with 1 liter of ether
  5. customto obtain an ether solution which
  6. washis washed with water
  7. dry with materialThe ether solution is dried with anhydrous magnesium sulfate
  8. filtrationfiltered
  9. customevaporated at reduced pressure

出典と根拠

ORDレコード
ord-e7b09e39e6d0482c831f6c8380c5c8e2
出典データセット
uspto-grants-1988_02
特許番号
US04727180

反応ノート

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