Tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-1-carboxylate → tert-butyl 4-(2-acetamido-6-(6-chloro-5-(3-(difluoromethoxy)phenylsulfonamido)pyridin-3-yl)imidazo[1,2-b]pyridazin-3-yl)-5,6-dihydropyridine-1(2H)-carboxylate

Participants

Reaction Steps

Following the procedure described in Example 49, N-(6-(6-chloro-5-(3-(difluoromethoxy)phenylsulfonamido)pyridin-3-yl)-3-iodoimidazo[1,2-b]pyridazin-2-yl)acetamide (370.0 mg, 583 μmol)was combined with tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (216 mg, 699 μmol, (Carbocore, The Woodlands, Tex.) to afford tert-butyl 4-(2-acetamido-6-(6-chloro-5-(3-(difluoromethoxy)phenylsulfonamido)pyridin-3-yl)imidazo[1,2-b]pyridazin-3-yl)-5,6-dihydropyridine-1(2H)-carboxylate (104 mg, 25.9% yield) as a yellow solid. LCMS (ESI positive ionization) m/z: 691 (M+1).

Provenance & Evidence