Antipyric acid → N-(4-(2-amino-5-bromopyridin-3-yl)phenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide

Participants

Role	Name	HCID	Charge
Reactant	Antipyric acid	HCID 246564	—
Reactant	Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)	HCID 9886157	—
Reactant	3-(4-Aminophenyl)-5-bromopyridin-2-amine	HCID 68288976	—
Solvent	Water	HCID 962	—
Solvent	Dimethylformamide	HCID 6228	—
Solvent	Dichloromethane	HCID 6344	—
Product	N-(4-(2-amino-5-bromopyridin-3-yl)phenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide	HCID 68288995	89.5%

Reaction Steps

To the antipyric acid (0.163 g) in 5 mL of DCM, 0.5 mL of DMF and TEA (1.4 mmol) was added the HATU (0.266 g) and stirred for 30 minutes. To the activated ester was added the compound prepared in Example 43 (0.185 g) and stirred for 1 hour. The reaction mixture was diluted with water, extracted with additional DCM, and the organic layer was washed with water, brine and dried over anhydrous sodium sulfate. The DCM layer was filtered and concentrated, and the crude was chromatographed on silica gel using 10:1 DCM:MeOH to give the title compound (0.3 g) having the following physical data.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08962623B2
Source dataset	uspto-grants-2015_02
ORD ID	ord-8ebb55893eef41dbabafd0603d1e09d0
Source note	uspto-grants-2015_02