反応式
[C:1]([CH2:3][CH2:4][C:5]1[O:6][C:7]2[CH:13]=[C:12]([O:14][CH2:15][C:16]3[N:17]=[C:18]([C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=4)[O:19][C:20]=3[CH3:21])[CH:11]=[CH:10][C:8]=2[CH:9]=1)#[N:2].[N-:28]=[N+:29]=[N-:30].[Na+].[Cl-].[NH4+].CN(C)C=O>O>[CH3:21][C:20]1[O:19][C:18]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)=[N:17][C:16]=1[CH2:15][O:14][C:12]1[CH:11]=[CH:10][C:8]2[CH:9]=[C:5]([CH2:4][CH2:3][C:1]3[NH:30][N:29]=[N:28][N:2]=3)[O:6][C:7]=2[CH:13]=1参加物
実験手順
A mixture of 2-(2-cyanoethyl)-6-(5-methyl-2-phenyl-4-oxazolylmethoxy)benzofuran (1.20 g), sodium azide (1.09 g), ammonium chloride (0.90 g) and N,N-dimethylformamide (30 ml) was stirred at 130° to 140° C. for 16 hours. The reaction mixture was poured over water and extracted with ethyl acetate. After the ethyl acetate layer was washed with water and dried (MgSO4), the solvent was distilled off; the residue was subjected to silica gel column chromatography. From the fraction eluted with methanol-chloroform (5:95, v/v), 5-[2-[6-(5-methyl-2-phenyl-4-oxazolylmethoxy)-2-benzofuranyl]ethyl ]-1H-tetrazole (1.05 g, 78%) was obtained, which was then recrystallized from dichloromethane-methanol to yield colorless prisms having a melting point of 177° to 178° C.
後処理
- extractionextracted with ethyl acetate
- washAfter the ethyl acetate layer was washed with water
- dry with materialdried (MgSO4)
- distillationthe solvent was distilled off
- washFrom the fraction eluted with methanol-chloroform (5:95
出典と根拠
- ORDレコード
- ord-2e59b47848294fe195989e641f0b30fb
- 出典データセット
- uspto-grants-1998_03
- 特許番号
- US05723479
関連ノート
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