Hydrochloric Acid → HCID 131735815, compound

Participants

Reaction Steps

To the solution of 1-{2-[2-amino-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl]-1-benzothien-5-yl}-3-(3-methylphenyl)urea (500 mg, 1 mmol, 1 eq) in tetrahydrofuran (6 mL) at room temperature was added dropwise aqueous HCl (3N, 6 mL) and the reaction was stirred at room temperature for 4 hours. The reaction mixture was filtered directly through a Buchner funnel, rinsed with isopropanol, followed by i-PrOH—H2O (1:1) to give {6-amino-5-[5-({[(3-methylphenyl)amino]carbonyl}amino)-1-benzothien-2-yl]pyridin-3-yl}boronic acid as a white solid in amount of 384 mg.

Provenance & Evidence