반응식
[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]=1참가 물질
실험 절차
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.
후처리
- 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
출처 및 근거
- ORD 기록
- ord-2e59b47848294fe195989e641f0b30fb
- 출처 데이터셋
- uspto-grants-1998_03
- 특허 번호
- US05723479
연결된 노트
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