1-Hydroxybenzotriazole → (2E)-3-(6-{[(3R)-1-(4-chlorobenzoyl)-3-pyrrolidinyl]amino}-3-pyridyl)-N-(tetrahydro-2H-pyran-2-yloxy)acrylamide

Participants

Reaction Steps

To a solution of (2E)-3-(6-{[(3R)-1-(4-chlorobenzoyl)-3-pyrrolidinyl]amino}-3-pyridyl)acrylic acid (1.58 g) in DMF (16 mL) was added O-(tetrahydro-2H-pyran-2-yl)hydroxylamine (546 mg), HOBt (744 mg), and EDCI HCl (1.06 mg) and the resulting mixture was stirred at ambient temperature for 4 hours. The reaction mixture was diluted with water and extracted with AcOEt. The organic phase was washed with sat NH4Cl aq solution and sat NaHCO3 aq solution, and brine, and dried over Na2SO4. The solvent was removed in vacuo and the residue was purified by silica gel column chromatography eluted with chloroform:methanol=97.5:2.5 to give (2E)-3-(6-{[(3R)-1-(4-chlorobenzoyl)-3-pyrrolidinyl]amino}-3-pyridyl)-N-(tetrahydro-2H-pyran-2-yloxy)acrylamide (1.89 g) as colorless oil.

Provenance & Evidence