Hydrochloric Acid → 2-(7-(2-Methoxyethoxy)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)quinolin-8-ol

HRID 2035570Notes

Reaction equation

HRID 2035570 reaction equation
[Si]([O:8][C:9]1[CH:10]=[CH:11][CH:12]=[C:13]2[C:18]=1[N:17]=[C:16]([C:19]1[N:23]3[CH:24]=[CH:25][C:26]([O:28][CH2:29][CH2:30][O:31][CH3:32])=[CH:27][C:22]3=[N:21][N:20]=1)[CH:15]=[CH:14]2)(C(C)(C)C)(C)C.Cl.[OH-].[Na+]>C1COCC1.CCOC(C)=O>[CH3:32][O:31][CH2:30][CH2:29][O:28][C:26]1[CH:25]=[CH:24][N:23]2[C:19]([C:16]3[CH:15]=[CH:14][C:13]4[C:18](=[C:9]([OH:8])[CH:10]=[CH:11][CH:12]=4)[N:17]=3)=[N:20][N:21]=[C:22]2[CH:27]=1

Participants

6

Reactant 3

HCID 313Hydrochloric Acid2×HCID 14798Sodium HydroxideHCID 672312258-(Tert-butyldimethylsilyloxy)-2-(7-(2-methoxyethoxy)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)quinoline

Product 1

HCID 1361300452-(7-(2-Methoxyethoxy)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)quinolin-8-olYield 77%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 8-(tert-butyldimethylsilyloxy)-2-(7-(2-methoxyethoxy)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)quinoline (0.070 g, 0.155 mmol) in THF (8 mL) was added 1M HCl (1.5 mL, 1.50 mmol). After stirring at ambient temperature for 2 hours, 1 M HCl (5 mL) was added and the reaction mixture stirred for an additional 16 hours. The mixture was neutralized with 1M NaOH and diluted with EtOAc. The organic layer was washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure to give 40 mg (77%) of desired product. MS APCI (+) m/z 337.3 (M+1) detected.

Workup

  1. stirringthe reaction mixture stirred for an additional 16 hours
  2. washThe organic layer was washed with brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-9a2dca4321b84fe8b4712e81951d13e2
Source dataset
uspto-grants-2013_11
Patent number
US08575145B2

Reaction notes

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