反应详情

A mixture of 5-(2-(dimethylamino)-[1,2,4]triazolo[1,5-a]pyridin-7-ylcarbamoyl)-1-methyl-1H-pyrazole-4-carboxylic acid (150 mg, 455 μmol), azetidine (123 l, 1.82 mmol), propylphosphonic anhydride (50% in ethyl acetate, 671 μl, 1.14 mmol) and diisopropylethylamine (398 μl, 2.28 mmol) in tetrahydrofurane (8 ml) is stirred for 18 hours at room temperature under nitrogen atmosphere. The solvent is evaporated and the residue triturated with sat. aqueous sodium hydrogencarbonate solution. The precipitated solid is collected by filtration, washed with water and dried affording 4-(azetidine-1-carbonyl)-N-(2-(dimethylamino)-[1,2,4]triazolo[1,5-a]pyridin-7-yl)-1-methyl-1H-pyrazole-5-carboxamide (119 mg, 70.9%) as an off-white solid. Mp.: 240-1° C. MS: m/z=369.1 (M+H+).

1. customThe solvent is evaporated
2. customthe residue triturated with sat. aqueous sodium hydrogencarbonate solution
3. filtrationThe precipitated solid is collected by filtration
4. washwashed with water
5. customdried