6-Chloronicotinic acid → HCID 22993400, compound

Participants

Reaction Steps

To a stirred solution of 1.89 g (7.54 mmol) 6-chloro-nicotinic acid in 20 ml THF were added 2.87 g (7.54 mmol) HATU and 1.28 ml (7.54 mmol) N-ethyldiisopropylamine and stirring continued at room temperature for 30 minutes. A solution of 2.00 g (7.54 mmol) 4-methoxy-7-morpholin-4-yl-benzothiazol-2-ylamine in 20 ml dioxane and 4 ml DMF was then added and stirring continued at room temperature for 16 h. The reaction mixture was then poured into 350 ml water and the mixture stirred for 30 min. The resulting crystals were collected by filtration, washed with methanol and then with ether, and dried in vacuo to afford 3.03 g (99%) 6-chloro-N-(4-methoxy-7-morpholin-4-yl-benzothiazol-2-yl)-nicotinamide as a yellow crystalline solid. ES-MS m/e (%): 429 (M{37Cl}+Na+, 15), 427 (M{35Cl}+Na+, 38). 407 (M{37Cl}+H+, 40), 405 (M{31Cl}+H+, 100)

Provenance & Evidence