Tetrahydrofuran → 3-(3-(6-Phenylsulfanyl-pyridin-3-ylmethyl)-isoxazol-5-yl)-pyridin-2-ylamine

HRID 78081Notes

Reaction equation

HRID 78081 reaction equation
O1CCCC1.[C:6]1([S:12][C:13]2[N:18]=[CH:17][C:16]([CH2:19][C:20](Cl)=[N:21][OH:22])=[CH:15][CH:14]=2)[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.[C:24]([C:26]1[C:27]([NH2:32])=[N:28][CH:29]=[CH:30][CH:31]=1)#[CH:25].C(N(CC)CC)C>O>[C:6]1([S:12][C:13]2[N:18]=[CH:17][C:16]([CH2:19][C:20]3[CH:25]=[C:24]([C:26]4[C:27]([NH2:32])=[N:28][CH:29]=[CH:30][CH:31]=4)[O:22][N:21]=3)=[CH:15][CH:14]=2)[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1

Participants

6

Reactant 4

HCID 8028TetrahydrofuranHCID 8471TriethylamineHCID 124225263-Ethynylpyridin-2-amineHCID 72262849(6-Phenylsulfanyl-pyridin-3-yl)acetohydroximoyl chloride

Product 1

HCID 592553523-(3-(6-Phenylsulfanyl-pyridin-3-ylmethyl)-isoxazol-5-yl)-pyridin-2-ylamineYield 23.5%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
50 °C

Procedure

To a tetrahydrofuran (5 mL) solution of (6-phenylsulfanyl-pyridin-3-yl)-acetohydroximoyl chloride (149 mg, 0.54 mmol) described in Manufacturing Example 97-1-4 and 3-ethynyl-pyridin-2-ylamine (15 mg, 0.13 mmol) described in Manufacturing Example 1-2-3 was added triethylamine (80 μL, 0.57 mmol), which was stirred for 4 hours at 50° C. under nitrogen atmosphere. Water was added to the reaction solution at room temperature, which was then extracted with ethyl acetate. The organic layer was separated, washed with saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure, and the residue was purified by NH silica gel column chromatography (ethyl acetate: methanol=10:1) and then further purified by silica gel column chromatography (ethyl acetate: methanol=10:1) to obtain the title compound (11 mg, 23%).

Workup

  1. extractionwhich was then extracted with ethyl acetate
  2. customThe organic layer was separated
  3. washwashed with saturated aqueous sodium chloride
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationThe filtrate was concentrated under a reduced pressure
  7. customthe residue was purified by NH silica gel column chromatography (ethyl acetate: methanol=10:1)
  8. customfurther purified by silica gel column chromatography (ethyl acetate: methanol=10:1)

Sources & evidence

ORD record
ord-de6da692e84341d4b83ee821778286ee
Source dataset
uspto-grants-2014_09
Patent number
US08841327B2

Reaction notes

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