Oxalyl chloride → 2-(4-Benzyloxy-2-methoxyphenyl)acetyl chloride

HRID 1009756

반응식

HRID 1009756 반응식
[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][C:12]([CH2:15][C:16](O)=[O:17])=[C:11]([O:19][CH3:20])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(Cl)(=O)C([Cl:24])=O>CN(C=O)C.C(Cl)Cl>[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][C:12]([CH2:15][C:16]([Cl:24])=[O:17])=[C:11]([O:19][CH3:20])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

참가 물질

5

반응물 2

HCID 65578Oxalyl chlorideHCID 110655714-Benzyloxy-2-methoxyphenylacetic acid

생성물 1

HCID 866288332-(4-Benzyloxy-2-methoxyphenyl)acetyl chloride

시약·촉매·용매 2

HCID 6228Dimethylformamide촉매HCID 6344Dichloromethane용매

실험 절차

Using a similar procedure to that described in the portion of Example 17 that is concerned with the preparation of starting materials, 2-(4-benzyloxy-2-methoxyphenyl)acetic acid (0.1 g) was reacted with oxalyl chloride (0.093 ml) and DMF (3 drops) in methylene chloride (5 ml). The reaction mixture was stirred at ambient temperature for 1 hour. The mixture was evaporated to give 2-(4-benzyloxy-2-methoxyphenyl)acetyl chloride. A mixture of the material so obtained, 3-amino-4,5-dimethylisoxazole (0.062 g), diisopropylethylamine (0.065 ml), 4-dimethylaminopyridine (0.005 g) and methylene chloride (5 ml) was stirred at ambient temperature for 14 hours. The resultant mixture was evaporated and the residue was purified by column chromatography on silica using increasingly polar mixtures of methylene chloride and ethyl acetate as eluent. There was thus obtained N-(4,5-dimethylisoxazol-3-yl)-2-(4-benzyloxy-2-methoxyphenyl)acetamide; 1H NMR: (DMSOd6) 1.77 (s, 3H), 2.28 (s, 3H), 3.55 (s, 2H), 3.74 (s, 3H), 5.09 (s, 2H), 6.54 (m, 1H), 6.63 (d, 1H), 7.09 (d, 1H), 7.33 (m, 1H), 7.39 (m, 2H), 7.45 (m, 2H), 10.15 (br s, 1H); Mass Spectrum: M+H+ 367.

후처리

  1. customThe mixture was evaporated

출처 및 근거

ORD 기록
ord-1ec9688a87994a619ab452771e0e5c38
출처 데이터셋
uspto-grants-2011_07
특허 번호
US07973164B2

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