Diisopropylethylamine → 3-(2-Benzyloxy-propionylamino)-3H-imidazole-4-carboxylic acid methyl ester

HRID 57727

反応式

HRID 57727 の反応式
[CH3:1][O:2][C:3]([C:5]1[N:6]([NH:10][C:11](=[O:21])[CH2:12][O:13][CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH:7]=[N:8][CH:9]=1)=[O:4].[CH2:22](OC(C)C(O)=O)C1C=CC=CC=1.CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C.C1COCC1.O>[CH3:1][O:2][C:3]([C:5]1[N:6]([NH:10][C:11](=[O:21])[CH:12]([O:13][CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[CH3:22])[CH:7]=[N:8][CH:9]=1)=[O:4]

参加物

8

実験手順

To a solution of compound 2 (4.2 g, 29.7 mmol), 2-Benzyloxy-propionic acid (5.5 g, 29.7 mmol) and DIEA (10 mL) in a mixture of DMF (1 mL) and THF (50 mL) in ice-water bath was added HATU (13.5 g, 35.7 mmol). The resulting mixture was then stirred at ambient temperature overnight. Water (100 mL) was added. The mixture was extracted with ethyl acetate (300 mL×2). The combined organic phases were concentrated to give a crude residue, which was purified by chromatography on silica gel column (eluted with PE/EtOAc=1:1 to 1:3) to afford compound 9 (8.2 g, 91% yield) as brown oil. LC-MS: m/z 304 [M+H]+.

後処理

  1. extractionThe mixture was extracted with ethyl acetate (300 mL×2)
  2. concentrationThe combined organic phases were concentrated
  3. customto give a crude residue, which
  4. customwas purified by chromatography on silica gel column (eluted with PE/EtOAc=1:1 to 1:3)

出典と根拠

ORDレコード
ord-efc87d032fbe4100bf345dd07e40e300
出典データセット
uspto-grants-2016_09
特許番号
US09434733B2

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