Hydrochloric Acid → 2-[1-[[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]-4-piperidinyl]-4-thiazolecarboxylic acid

HRID 2043766Notes

Reaction equation

HRID 2043766 reaction equation
C([O:3][C:4]([C:6]1[N:7]=[C:8]([CH:11]2[CH2:16][CH2:15][N:14]([C:17](=[O:29])[CH2:18][N:19]3[C:23]([CH3:24])=[CH:22][C:21]([C:25]([F:28])([F:27])[F:26])=[N:20]3)[CH2:13][CH2:12]2)[S:9][CH:10]=1)=[O:5])C.[OH-].[Na+].Cl>CO>[CH3:24][C:23]1[N:19]([CH2:18][C:17]([N:14]2[CH2:15][CH2:16][CH:11]([C:8]3[S:9][CH:10]=[C:6]([C:4]([OH:5])=[O:3])[N:7]=3)[CH2:12][CH2:13]2)=[O:29])[N:20]=[C:21]([C:25]([F:28])([F:26])[F:27])[CH:22]=1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 66911511ethyl-2-[1-[[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]-4-piperidinyl]-4-thiazolecarboxylate2×

Product 1

HCID 666014572-[1-[[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]-4-piperidinyl]-4-thiazolecarboxylic acidYield 90.1%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A solution of ethyl-2-[1-[[5-methyl-3-(trifluoromethyl)-1H-pyrazol-1-yl]acetyl]-4-piperidinyl]-4-thiazolecarboxylate (13.0 g, 30.2 mmol) (i.e. the product of Example 19, Step B) in 60 mL of methanol was cooled to 0° C. and treated with a 1 N aqueous NaOH solution (36.3 mL, 36.3 mmol). The reaction mixture was allowed to warm to room temperature, and stirred for 5 h. The reaction mixture was cooled again to 0° C. and treated with 1 N aqueous hydrochloric acid (36.3 mL, 36.3 mmol). The resulting precipitate was filtered, washed with water and dried in a vacuum oven at 100° C. to give 10.95 g of the title compound as a white solid.

Workup

  1. temperatureThe reaction mixture was cooled again to 0° C.
  2. filtrationThe resulting precipitate was filtered
  3. washwashed with water
  4. customdried in a vacuum oven at 100° C.

Sources & evidence

ORD record
ord-dba566e61c564ec4a3ea7bdad27ebd47
Source dataset
uspto-grants-2013_11
Patent number
US08586611B2

Reaction notes

Loading…