Hydrochloric Acid → 7-Benzyl-1-cyano-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester

HRID 1410732ノート

反応式

HRID 1410732 の反応式
[CH3:1][O:2][C:3]([C:5]1[N:6]=[C:7](I)[C:8]2[C:9](=[O:23])[N:10]([CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[CH:11]=[CH:12][C:13]=2[C:14]=1[OH:15])=[O:4].[C:25]([Cu])#[N:26].O.Cl>CN(C=O)C.C(Cl)Cl>[CH3:1][O:2][C:3]([C:5]1[N:6]=[C:7]([C:25]#[N:26])[C:8]2[C:9](=[O:23])[N:10]([CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[CH:11]=[CH:12][C:13]=2[C:14]=1[OH:15])=[O:4]

参加物

7

反応物 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 867141107-Benzyl-4-hydroxy-1-iodo-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl esterHCID 178418546HCID 178418546、化合物

生成物 1

HCID 682976087-Benzyl-1-cyano-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester収率 84.7%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 6344Dichloromethane溶媒

実験手順

A mixture of 7-benzyl-4-hydroxy-1-iodo-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester (136 mg, 0.31 mmol) and CuCN (56 mg, 0.62 mmol) in 5 mL of DMF was refluxed for 8 min. The mixture was cooled to r.t. and poured into a mixture of water and CH2Cl2. 4 M HCl was added to the mixture with vigorous stirring until no solid was present. The aqueous layer was extracted with additional CH2Cl2, and the combined organic layer was dried over MgSO4 and concentrated. The crude product was chromatographed (0-10% EtOAc/CH2Cl2) to give 88 mg of the title compound. MS: (+) m/z 336.00 (M+1).

後処理

  1. temperaturewas refluxed for 8 min
  2. extractionThe aqueous layer was extracted with additional CH2Cl2
  3. dry with materialthe combined organic layer was dried over MgSO4
  4. concentrationconcentrated
  5. customThe crude product was chromatographed (0-10% EtOAc/CH2Cl2)

出典と根拠

ORDレコード
ord-cf433298c96746f0a058bc499866ea7b
出典データセット
uspto-grants-2014_12
特許番号
US08921389B2

反応ノート

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