Triethylamine → 3-(3-(6-Benzyloxy-pyridin-3-ylmethyl)-isoxazol-5-yl)-pyridine-2,6-diamine

HRID 1891563Notes

Reaction equation

HRID 1891563 reaction equation
[C:1]([C:3]1[C:4]([NH2:10])=[N:5][C:6]([NH2:9])=[CH:7][CH:8]=1)#[CH:2].[CH2:11]([O:18][C:19]1[CH:24]=[CH:23][C:22]([CH2:25][C:26](Cl)=[N:27][OH:28])=[CH:21][N:20]=1)[C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1.C(N(CC)CC)C>O1CCCC1>[CH2:11]([O:18][C:19]1[N:20]=[CH:21][C:22]([CH2:25][C:26]2[CH:2]=[C:1]([C:3]3[C:4]([NH2:10])=[N:5][C:6]([NH2:9])=[CH:7][CH:8]=3)[O:28][N:27]=2)=[CH:23][CH:24]=1)[C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 552816763-Ethynylpyridine-2,6-diamineHCID 72262842(2-Benzyloxy-pyridin-5-yl)acetohydroximoyl chloride

Product 1

HCID 441596033-(3-(6-Benzyloxy-pyridin-3-ylmethyl)-isoxazol-5-yl)-pyridine-2,6-diamineYield 73%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 3-ethynyl-pyridin-2,6-diamine (230 mg, 1.73 mmol) described in Manufacturing Example 13-1-3 in anhydrous tetrahydrofuran (20 mL) was added (2-benzyloxy-pyridin-5-yl)-acetohydroximoyl chloride (1.00 g, 3.61 mmol) described in Manufacturing Example 12-1-5 under nitrogen atmosphere at room temperature. Triethylamine (965 μL, 6.92 mmol) was added dropwise to the mixture 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=2:1) to obtain the title compound (470 mg, 73%).

Workup

  1. customdescribed in Manufacturing Example 12-1-5 under nitrogen atmosphere at room temperature
  2. customThe reaction mixture was partitioned into water and ethyl acetate at room temperature
  3. washThe organic layer was washed with water and saturated aqueous sodium chloride
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customthe solvent was evaporated under a reduced pressure
  6. customThe residue was purified by NH silica gel column chromatography (ethyl acetate:heptane=2:1)

Sources & evidence

ORD record
ord-a116726eb68745d684befa5ee1c770fa
Source dataset
uspto-grants-2013_08
Patent number
US08507530B2

Reaction notes

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