Hydrochloric Acid → 2-(4-Fluorophenyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridine-7-carboxylic acid

HRID 874362Notes

Reaction equation

HRID 874362 reaction equation
Cl.[F:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[N:20]=[C:12]3[CH2:13][CH:14]([C:17]([O-:19])=[O:18])[CH2:15][CH2:16][N:11]3[N:10]=2)=[CH:5][CH:4]=1.[Na+]>>[F:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[N:20]=[C:12]3[CH2:13][CH:14]([C:17]([OH:19])=[O:18])[CH2:15][CH2:16][N:11]3[N:10]=2)=[CH:5][CH:4]=1

Participants

3

Reactant 2

HCID 313Hydrochloric AcidHCID 117776381Sodium 2-(4-fluorophenyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridine-7-carboxylate

Product 1

HCID 839653482-(4-Fluorophenyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridine-7-carboxylic acidYield 40.1%

Procedure

Concentrated hydrochloric acid (0.16 ml) was added to an aqueous solution (2 ml) of the sodium 2-(4-fluorophenyl)-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridine-7-carboxylate (530 mg) obtained in (Example 5.2) <Step 2>, and the obtained mixture was then stirred for 15 minutes. Thereafter, the precipitated solid was collected by filtration, so as to obtain the title compound (196 mg) in the form of a whitish brown solid.

Workup

  1. customobtained in (Example 5.2) <Step 2>
  2. filtrationThereafter, the precipitated solid was collected by filtration

Sources & evidence

ORD record
ord-821edcd17fe74db6a0f7230b73df0bed
Source dataset
uspto-grants-2015_03
Patent number
US08980888B2

Reaction notes

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