Trifluoroacetic acid → (3,5-Dihydroxypicolinoyl)glycine

HRID 2188533ノート

反応式

HRID 2188533 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-427d8ca9ad2f4817b5a404659a2e8806
出典データセット
uspto-grants-2012_12
特許番号
US08323671B2

反応ノート

読み込み中…