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

반응식

HRID 474150 반응식
[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

참가 물질

7

반응물 5

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

생성물 1

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

시약·촉매·용매 1

HCID 6344Dichloromethane용매2회

실험 절차

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.

후처리

  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)

출처 및 근거

ORD 기록
ord-be2d7a5a747b42c0b911d1049f79c717
출처 데이터셋
uspto-grants-2014_01
특허 번호
US08637513B2

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