1,2-Dichloroethane → 2-(4-pyrazolo[1,5-b]pyridazin-3-ylphenyl)-N-[(1R)-1-[5-(2,2,2-trifluoroethoxy)pyridin-2-yl]ethyl]acetamide

HRID 474150

反応式

HRID 474150 の反応式
[N:1]1[N:5]2[N:6]=[CH:7][CH:8]=[CH:9][C:4]2=[C:3]([C:10]2[CH:15]=[CH:14][C:13]([CH2:16][C:17]([OH:19])=O)=[CH:12][CH:11]=2)[CH:2]=1.[Cl-].[Cl-].[NH3+:22][C@@H:23]([C:25]1[CH:30]=[CH:29][C:28]([O:31][CH2:32][C:33]([F:36])([F:35])[F:34])=[CH:27][NH+:26]=1)[CH3:24].C1C=NC2N(O)N=NC=2C=1.C(Cl)CCl.CCN(C(C)C)C(C)C>C(Cl)Cl>[N:1]1[N:5]2[N:6]=[CH:7][CH:8]=[CH:9][C:4]2=[C:3]([C:10]2[CH:11]=[CH:12][C:13]([CH2:16][C:17]([NH:22][C@@H:23]([C:25]3[CH:30]=[CH:29][C:28]([O:31][CH2:32][C:33]([F:36])([F:34])[F:35])=[CH:27][N:26]=3)[CH3:24])=[O:19])=[CH:14][CH:15]=2)[CH:2]=1

参加物

7

反応物 5

HCID 111,2-DichloroethaneHCID 81531DiisopropylethylamineHCID 181649HOAtHCID 59535942(4-Pyrazolo[1,5-b]pyridazin-3-ylphenyl)acetic acidHCID 178462209HCID 178462209、化合物

生成物 1

HCID 252425402-(4-pyrazolo[1,5-b]pyridazin-3-ylphenyl)-N-[(1R)-1-[5-(2,2,2-trifluoroethoxy)pyridin-2-yl]ethyl]acetamide収率 68.1%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

実験手順

To a solution of 0.69 g (2.74 mmol) (4-pyrazolo[1,5-b]pyridazin-3-ylphenyl)acetic acid in 10.0 ml CH2Cl2 was added 0.96 g (3.28 mmol) of 2-[(1R)-1-ammonioethyl]-5-(2,2,2-trifluoroethoxy)pyridinium dichloride, 0.48 g (3.56 mmol) of HOAt, 0.68 g (3.56 mmol) of EDC, and 1.43 mL (8.21 mmol) of DIEA. After 1 h at room temperature, the reaction mixture was diluted with CH2Cl2, washed three times with water, and washed with brine. The organic layer was dried over Na2SO4, filtered and concentrated in vacuo. Purification by flash chromatography (silica gel, gradient 0-100% EtOAc in hexanes) afforded 0.85 g (68%) of 2-(4-pyrazolo[1,5-b]pyridazin-3-ylphenyl)-N-{(1R)-1-[5-(2,2,2-trifluoroethoxy)pyridin-2-yl]ethyl}acetamide. 1H NMR (CD3OD, 400 MHz) 8.40 (m, 2-H); 8.28 (s, 1H); 8.27 (d, J=2.93 Hz, 1H); 7.61 (dd, J=1.83, 6.41 Hz, 2H); 7.43 (m, 3H); 7.31 (d, J=8.61 Hz, 1H); 7.22 (dd, J=4.58, 9.07 Hz, 1H); 5.04 (quintet, J=6.86 Hz, 1H); 4.62 (q, J=8.43 Hz, 2H); 3.61 (s, 2H); 1.46 (d, J=7.05 Hz, 31-1). HRMS (ES) [M+1]+calcd for C23H21F3N5O2: 456.1647, Found: 456.1652. FLEPR alpha1I IP=5.0 nM.

後処理

  1. washwashed three times with water
  2. washwashed with brine
  3. dry with materialThe organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customPurification by flash chromatography (silica gel, gradient 0-100% EtOAc in hexanes)

出典と根拠

ORDレコード
ord-be2d7a5a747b42c0b911d1049f79c717
出典データセット
uspto-grants-2014_01
特許番号
US08637513B2

関連ノート

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