Morpholine → Ethyl 2,6-dimethyl-3-(propan-2-yl)benzoate

HRID 354544

反応式

HRID 354544 の反応式
N1CCOC[CH2:2]1.[CH:7](=O)[CH2:8][CH:9](C)C.S([O-])([O-])(=O)=O.[Mg+2].[CH3:19][C:20]1[C:25]([C:26]([O:28][CH2:29][CH3:30])=[O:27])=[C:24]([CH3:31])O[C:22](=O)[CH:21]=1>C1(C)C=CC(S(O)(=O)=O)=CC=1.C1(C)C=CC=CC=1>[CH3:19][C:20]1[C:21]([CH:8]([CH3:9])[CH3:7])=[CH:22][CH:2]=[C:24]([CH3:31])[C:25]=1[C:26]([O:28][CH2:29][CH3:30])=[O:27]

参加物

7

反応物 4

HCID 8083MorpholineHCID 115523-MethylbutanalHCID 24083Sulfuric acid magnesium salt (1:1)HCID 76918ethyl 4,6-dimethyl-2-oxo-2H-pyran-5-carboxylate

生成物 1

HCID 13126300Ethyl 2,6-dimethyl-3-(propan-2-yl)benzoate収率 8.3%

試薬・触媒・溶媒 2

HCID 6101p-Toluenesulfonic acid触媒HCID 1140Toluene溶媒

実験手順

Morpholine (13.34 g), isovaleraldehyde (13.18 g), p-toluenesulfonic acid (0.2 g), and toluene (300 ml) were combined and heated at reflux using a Soxhlet extractor with magnesium sulfate to remove any water produced. After three hours the Soxhlet extractor was replaced with a condenser, and ethyl 4,6-dimethyl-2-oxo-2H-pyran-5-carboxylate (30 g) was added. The reaction mixture was heated under reflux for approximately 64 hours. The solvent was evaporated, and the resultant oil was distilled to give 11.1 g of crude product which was chromatographed to yield ethyl 2,6-dimethyl-3-(1-methylethyl)benzoate (2.8 g).

後処理

  1. temperatureheated
  2. temperatureat reflux
  3. customto remove any water
  4. customproduced
  5. temperatureThe reaction mixture was heated
  6. temperatureunder reflux for approximately 64 hours
  7. customThe solvent was evaporated
  8. distillationthe resultant oil was distilled
  9. customto give 11.1 g of crude product which
  10. customwas chromatographed

出典と根拠

ORDレコード
ord-3deaa738e08b489ea56184426ebd4810
出典データセット
uspto-grants-1983_03
特許番号
US04375476

関連ノート

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