Trifluoroacetic acid → (3,5-Dihydroxypicolinoyl)glycine

HRID 1158582ノート

反応式

HRID 1158582 の反応式
C([O:5][C:6](=[O:19])[CH2:7][NH:8][C:9]([C:11]1[C:16]([OH:17])=[CH:15][C:14]([OH:18])=[CH:13][N:12]=1)=[O:10])(C)(C)C.FC(F)(F)C(O)=O>C(Cl)Cl>[OH:17][C:16]1[C:11]([C:9]([NH:8][CH2:7][C:6]([OH:19])=[O:5])=[O:10])=[N:12][CH:13]=[C:14]([OH:18])[CH:15]=1

参加物

4

反応物 2

HCID 6422Trifluoroacetic acidHCID 59513079[(3,5-Dihydroxy-pyridine-2-carbonyl)-amino]-acetic acid tert-butyl ester

生成物 1

HCID 24891198(3,5-Dihydroxypicolinoyl)glycine収率 89%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a solution of [(3,5-dihydroxy-pyridine-2-carbonyl)-amino]-acetic acid tert-butyl ester, 28, (0.10 g, 0.37 mmol) in CH2Cl2 (4 mL) at room temperature is added trifluoroacetic acid (1 mL). The reaction is stirred for 16 hours at room temperature and then concentrated under reduced pressure. The solid that remains is collected by filtration, washed with Et2O to afford 0.070 g (89% yield) of the desired compound as a colorless solid. 1H NMR (250 MHz, DMSO-d6) δ ppm 10.86 (1H, br s), 9.00 (1H, t, J=6.1 Hz), 7.77 (1H, d, J=2.4 Hz), 6.69 (1H, d, J=2.4 Hz), 3.95 (1H, d, J=6.2 Hz). HPLC-MS: m/z 213 [M+H]+.

後処理

  1. concentrationconcentrated under reduced pressure
  2. filtrationThe solid that remains is collected by filtration
  3. washwashed with Et2O

出典と根拠

ORDレコード
ord-c86445fef28b43ab92ffeb907938ffc5
出典データセット
uspto-grants-2010_10
特許番号
US07811595B2

反応ノート

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