Reaction #1857577

Reaction equation

water

cyclopropanamine

2-{3-[2-(1-{[3,5-bis(difluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-4-yl)-1,3-thiazol-4-yl]-4,5-dihydro-1,2-oxazol-5-yl}benzoic acid

1-ethyl-3-(3′-dimethylaminopropyl)carbodiimide

→

2-{3-[2-(1-{[3,5-Bis(difluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-4-yl)-1,3-thiazol-4-yl]-4,5-dihydro-1,2-oxazol-5-yl}-N-cyclopropylbenzamide

Solvents

dichloromethane

Conditions

Workup

1. 1
   OtherThe aqueous phase is removed
2. 2
   Extractionextracted with ethyl acetate
3. 3
   DryingThe combined organic phases are dried over sodium sulphate
4. 4
   Concentrationconcentrated under reduced pressure
5. 5
   OtherThe residue is purified by chromatography

Procedure

To a solution of 2-{3-[2-(1-{[3,5-bis(difluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-4-yl)-1,3-thiazol-4-yl]-4,5-dihydro-1,2-oxazol-5-yl}benzoic acid (105 mg) in dichloromethane (10 ml) are added, at room temperature, cyclopropanamine (11 mg), 4-dimethylaminopyridine (2 mg) and 1-ethyl-3-(3′-dimethylaminopropyl)carbodiimide (37 mg). The mixture is stirred at room temperature for 3 hours and then admixed with water. The aqueous phase is removed and extracted with ethyl acetate. The combined organic phases are dried over sodium sulphate and concentrated under reduced pressure. The residue is purified by chromatography. This gives 2-{3-[2-(1-{[3,5-bis(difluoromethyl)-1H-pyrazol-1-yl]acetyl}piperidin-4-yl)-1,3-thiazol-4-yl]-4,5-dihydro-1,2-oxazol-5-yl}-N-cyclopropylbenzamide (78 mg).

Source