반응식
[CH3:1][C:2]1[NH:3][C:4]([CH3:23])=[C:5](CC(O)=O)[CH:6]([C:11]2[CH:16]=[CH:15][CH:14]=[C:13]([Cl:17])[C:12]=2[Cl:18])[C:7]=1[C:8]([OH:10])=[O:9].[C:24](=[O:27])([OH:26])[O-].[Na+].[C:29]([O:32][CH2:33]Cl)(=[O:31])[CH3:30].[CH3:35]N(C=O)C>>[Cl:18][C:12]1[C:13]([Cl:17])=[CH:14][CH:15]=[CH:16][C:11]=1[CH:6]1[C:5]([C:24]([O:26][CH3:35])=[O:27])=[C:4]([CH3:23])[NH:3][C:2]([CH3:1])=[C:7]1[C:8]([O:10][CH2:33][O:32][C:29](=[O:31])[CH3:30])=[O:9]참가 물질
반응물 4
생성물 1
반응 조건
- 온도
- 80 °C
실험 절차
To a stirred mixture of 1,4-dihydro-2,6-dimethyl-4-(2',3'-dichorophenyl)-5-carboxymethyl-3-pyridinecarboxylic acid (0.3 g, 0.83 mmol) and sodium bicarbonate (0.14 g, 1.69 mmol)in DMF (15 ml) under nitrogen atmosphere was added chloromethyl acetate (0.137 g, 1.26 mmol). The reaction mixture was heated at 80° C. for 18 h. Workup by evaporation of solvent and addition of water. Extraction with dichloromethane, the extract was dried over sodium sulfate and concentrated. The resulting oil was subjected to flash chromatography [silica gel, dichloromethane--dichloromethane/methanol (9/1) gradient] to give colorless crystals (0.17 g, 48%) mp. 144.5°-147.6° C. 1H-NMR (CDCl3): 7.30-7.04 (Ar, 3H); 5.97 (s, 1H); 5.73 (d, J=5.5 Hz, 1H); 5.69 (d, J=5.5 Hz, 1H); 5.46 (s, 1H); 3.6 (s, 3H); 2.32 (s, 3H); 2.30 (s, 3H); 2.03 (s, 3H). 13 C-NMR (CDCl3): 169.64; 167.63; 165.81; 147.46; 146.77; 143.85; 132.86; 131.15; 129.83; 128.31; 126.98; 103.97; 101.89; 78.73; 50.93; 38.45; 20.80; 19.86; 19.26.
후처리
- customWorkup by evaporation of solvent and addition of water
- extractionExtraction with dichloromethane
- dry with materialthe extract was dried over sodium sulfate
- concentrationconcentrated
출처 및 근거
- ORD 기록
- ord-cda8481865be49bfac0904d1b0ea53d9
- 출처 데이터셋
- uspto-grants-1998_04
- 특허 번호
- US05739152
연결된 노트
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