Triethylamine → 3-(3-(6-Benzyloxy-pyridin-3-ylmethyl)-isoxazol-5-yl)-pyridin-2-ylamine

HRID 1891547Notes

Reaction equation

HRID 1891547 reaction equation
[C:1]([C:3]1[C:4]([NH2:9])=[N:5][CH:6]=[CH:7][CH:8]=1)#[CH:2].[CH2:10]([O:17][C:18]1[CH:23]=[CH:22][C:21]([CH2:24][C:25](Cl)=[N:26][OH:27])=[CH:20][N:19]=1)[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1.C(N(CC)CC)C>O1CCCC1>[CH2:10]([O:17][C:18]1[N:19]=[CH:20][C:21]([CH2:24][C:25]2[CH:2]=[C:1]([C:3]3[C:4]([NH2:9])=[N:5][CH:6]=[CH:7][CH:8]=3)[O:27][N:26]=2)=[CH:22][CH:23]=1)[C:11]1[CH:12]=[CH:13][CH:14]=[CH:15][CH:16]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 124225263-Ethynylpyridin-2-amineHCID 72262842(2-Benzyloxy-pyridin-5-yl)acetohydroximoyl chloride

Product 1

HCID 441595983-(3-(6-Benzyloxy-pyridin-3-ylmethyl)-isoxazol-5-yl)-pyridin-2-ylamineYield 26%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 3-ethynyl-pyridin-2-ylamine (400 mg, 3.39 mmol) described in Manufacturing Example 1-2-3 in anhydrous tetrahydrofuran (20 mL) was added (2-benzyloxy-pyridin-5-yl)-acetohydroximoyl chloride (2.50 g, 9.03 mmol) under nitrogen atmosphere at room temperature. Triethylamine (1.89 mL, 13.6 mmol) was then added dropwise thereto, and stirred for 1.5 hours at room temperature. The reaction mixture was partitioned into water and ethyl acetate at room temperature. The organic layer was washed with water and saturated aqueous sodium chloride, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under a reduced pressure. The residue was purified by NH silica gel column chromatography (ethyl acetate:heptane=1:3 then 1:2) to obtain the title compound (315 mg, 26%).

Workup

  1. customThe reaction mixture was partitioned into water and ethyl acetate at room temperature
  2. washThe organic layer was washed with water and saturated aqueous sodium chloride
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customthe solvent was evaporated under a reduced pressure
  5. customThe residue was purified by NH silica gel column chromatography (ethyl acetate

Sources & evidence

ORD record
ord-eb14a5c154514cf08019ce12a0a122ad
Source dataset
uspto-grants-2013_08
Patent number
US08507530B2

Reaction notes

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