4-Hydroxybenzaldehyde → Methyl 3-{4-[(4-formylphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}benzoate

HRID 2221584ノート

反応式

HRID 2221584 の反応式
Cl[CH2:2][C:3]1[N:4]=[C:5]([C:9]2[CH:10]=[C:11]([CH:16]=[CH:17][CH:18]=2)[C:12]([O:14][CH3:15])=[O:13])[O:6][C:7]=1[CH3:8].[OH:19][C:20]1[CH:27]=[CH:26][C:23]([CH:24]=[O:25])=[CH:22][CH:21]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH:24]([C:23]1[CH:26]=[CH:27][C:20]([O:19][CH2:2][C:3]2[N:4]=[C:5]([C:9]3[CH:10]=[C:11]([CH:16]=[CH:17][CH:18]=3)[C:12]([O:14][CH3:15])=[O:13])[O:6][C:7]=2[CH3:8])=[CH:21][CH:22]=1)=[O:25]

参加物

6

反応物 4

HCID 1264-HydroxybenzaldehydeHCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 23076520Methyl 3-(4-chloromethyl-5-methyl-1,3-oxazol-2-yl)benzoate

生成物 1

HCID 86605721Methyl 3-{4-[(4-formylphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}benzoate収率 94%

試薬・触媒・溶媒 1

HCID 962Water溶媒

反応条件

温度
90 °C

実験手順

A mixture of methyl 3-(4-chloromethyl-5-methyl-1,3-oxazol-2-yl)benzoate (2.0 g), 4-hydroxybenzaldehyde (0.87 g), potassium carbonate (0.98 g) and N,N-dimethylformamide (50 mL) was stirred at 90° C. for 2 hrs. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated to give methyl 3-{4-[(4-formylphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}benzoate as colorless crystals (2.33 g, yield 94%). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 103-104° C.

後処理

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated

出典と根拠

ORDレコード
ord-e0441eb400af4b4d9fb167e7c49f299a
出典データセット
uspto-grants-2008_05
特許番号
US07368578B2

反応ノート

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