Hydrochloric Acid → 1-(1-(Quinolin-6-ylmethyl)-1H-[1,2,3]triazolo[4,5-b]pyrazin-6-yl)ethanone

HRID 456124

Reaction equation

HRID 456124 reaction equation
C([O:3][C:4]([C:6]1[N:11]=[C:10]2[N:12]([CH2:15][C:16]3[CH:17]=[C:18]4[C:23](=[CH:24][CH:25]=3)[N:22]=[CH:21][CH:20]=[CH:19]4)[N:13]=[N:14][C:9]2=[N:8][CH:7]=1)=[CH2:5])C.Cl>C(O)(=O)C>[N:22]1[C:23]2[C:18](=[CH:17][C:16]([CH2:15][N:12]3[C:10]4=[N:11][C:6]([C:4](=[O:3])[CH3:5])=[CH:7][N:8]=[C:9]4[N:14]=[N:13]3)=[CH:25][CH:24]=2)[CH:19]=[CH:20][CH:21]=1

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 248519576-[6-(1-Ethoxy-vinyl)[1,2,3]triazolo[4,5-b]pyrazin-1-ylmethyl]-quinoline

Product 1

HCID 593418021-(1-(Quinolin-6-ylmethyl)-1H-[1,2,3]triazolo[4,5-b]pyrazin-6-yl)ethanoneYield 95.5%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

To a solution of the 6-((6-(1-ethoxyvinyl)-1H-[1,2,3]triazolo[4,5-b]pyrazin-1-yl)methyl)quinoline (150 mg, 0.451 mmol) in acetic acid, was added 3N HCl (0.1 mL). After the solution was stirred at rt for 2 h, solvents was removed under reduced pressure. The residue was diluted with water and its pH was adjusted to basic with aqueous NaHCO3, extracted with DCM. The combined organic layers were washed with NaHCO3(aq) and brine, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography to give a yellow solid of 1-(1-(quinolin-6-ylmethyl)-1H-[1,2,3]triazolo[4,5-b]pyrazin-6-yl)ethanone (131 mg, 91%). 1H-NMR (400 MHz, CDCl3) δ ppm 9.45 (s, 1H), 8.95 (d, 1H), 8.14 (m, 2H), 7.95 (s, 1H), 7.84 (d, 1H), 7.45 (m, 1H), 6.19 (s, 2H), 2.75 (s, 3H). LCMS (method B): [MH]+=305, tR=2.95 min.

Workup

  1. customsolvents was removed under reduced pressure
  2. additionThe residue was diluted with water and its pH
  3. extractionextracted with DCM
  4. washThe combined organic layers were washed with NaHCO3(aq) and brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-b86a5ba8604544a4a2fd897bc14af30c
Source dataset
uspto-grants-2013_07
Patent number
US08497368B2

Linked notes

Loading…