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Hydrochloric Acid → (5-Phenyl-1,2-oxazol-3-yl)methanol

HRID 584380
ノート
印刷プレビュー

反応式

HRID 584380 の反応式
[C:1]1([C:7]2[O:11][N:10]=[C:9]([C:12](OCC)=[O:13])[CH:8]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[H-].[Al+3].[Li+].[H-].[H-].[H-].O.Cl>C(OCC)C.C(OCC)(=O)C>[C:1]1([C:7]2[O:11][N:10]=[C:9]([CH2:12][OH:13])[CH:8]=2)[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 571142Ethyl 5-phenylisoxazole-3-carboxylateHCID 21226445Aluminium lithium hydride

生成物 1

HCID 1481082(5-Phenyl-1,2-oxazol-3-yl)methanol収率 94.2%

試薬・触媒・溶媒 2

HCID 3283Diethyl Ether溶媒2 回
HCID 8857Ethyl Acetate溶媒

実験手順

A solution of ethyl 5-phenylisoxazole-3-carboxylate (20.0 g) in diethyl ether (50 ml) was added dropwise to a mixture of lithium aluminium hydride (2.62 g) in diethyl ether (50 ml) at 0° C. After stirring for 1 hour, water was added to the reaction mixture carefully, followed by addition of 1N hydrochloric acid (200 ml) and extraction with ethyl acetate. The ethyl acetate layer was washed with an aqueous saturated solution of sodium chloride, dried (MgSO4) and concentrated. The remaining crystals were recrystallized from ethyl acetate-hexane to obtain (5-phenyl-3-isoxazolyl)methanol (15.2 g, yield 94%) as pale-brown crystals m.p. 101-102° C.

後処理

  1. washThe ethyl acetate layer was washed with an aqueous saturated solution of sodium chloride
  2. dry with materialdried (MgSO4)
  3. concentrationconcentrated
  4. customThe remaining crystals were recrystallized from ethyl acetate-hexane

出典と根拠

ORDレコード
ord-18650a4430db4f74b07432c218d0b298
出典データセット
uspto-grants-2005_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US06924300B2

反応ノート

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