Diisopropylethylamine → 3-[5-(5-Chloro-thiophen-2-yl)-isoxazol-3-ylmethyl]-3H-imidazo[4,5-b]pyridine-2-carboxylic acid (1-isopropyl-piperidin-4-yl)-amide

Participants

Role	Name	HCID	Charge
Reactant	Diisopropylethylamine	HCID 81531	—
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	1-Isopropylpiperidin-4-amine hydrochloride	HCID 23033460	—
Reactant	3-[5-(5-Chloro-thiophen-2-yl)-isoxazol-3-ylmethyl]-3H-imidazo[4,5-b] pyridine-2-carboxylic acid	HCID 68615288	—
Solvent	Dimethylformamide	HCID 6228	—
Product	3-[5-(5-Chloro-thiophen-2-yl)-isoxazol-3-ylmethyl]-3H-imidazo[4,5-b]pyridine-2-carboxylic acid (1-isopropyl-piperidin-4-yl)-amide	HCID 67012695	—

Reaction Steps

150.0 mg (0.41 mmol) 3-[5-(5-Chloro-thiophen-2-yl)-isoxazol-3-ylmethyl]-3H-imidazo[4,5-b] pyridine-2-carboxylic acid were dissolved in 4 mL DMF. Sequentially 142 μl DIPEA and 151.8 mg (0.41 mmol) HATU were added and the mixture was stirred for 20 min at room temperature. 74.3 mg (0.41 mmol) 1-Isopropyl-piperidine-4-ylamine-hydrochloride and another 71 μl DIPEA were added and the resulting mixture was stirred 3 h at room temperature. Concentration under reduced pressure and final purification by preparative RP-HPLC (CH3CN/H2O gradient+0.05% formic acid) gave pure 3-[5-(5-Chloro-thiophen-2-yl)-isoxazol-3-ylmethyl]-3H-imidazo[4,5-b]pyridine-2-carboxylic acid (1-isopropyl-piperidin-4-yl)-amide as a light brown amorphous solid. The title compound was obtained as its hydroformiate.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US07741341B2
Source dataset	uspto-grants-2010_06
ORD ID	ord-8e92d20e326843d3bf5093e0a42fb9cd
Source note	uspto-grants-2010_06