Diisopropylethylamine → HCID 67779881, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-(pyridin-3-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-amine (468 mg, 2.22 mmol), 4-(methoxycarbonyl)-1-methyl-1H-pyrazole-5-carboxylic acid (490 mg, 2.66 mmol), propylphosphonic anhydride (50% in ethyl acetate, 3.26 ml, 5.54 mmol) and N,N-diisopropylethylamine (1.51 ml, 8.86 mmol) in tetrahydrofurane (15 ml) is stirred for 18 hours at 70° C. under nitrogen atmosphere. The solvent is evaporated and the residue triturated with sat. aqueous sodium bicarbonate solution. The solid is collected by filtration, washed with water and dried affording methyl 1-methyl-5-(2-(pyridin-3-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1H-pyrazole-4-carboxylate (564 mg, 67.5%) as a light brown solid. mp.: 228-231° C. MS: m/z=378.5 (M+H+).

Provenance & Evidence