Potassium Phosphate, Tribasic → (4-(8-(5-(4-(Oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)[1,2,4]triazolo[1,5-a]pyridin-6-yl)-2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)pyridin-3-yl)methyl Acetate

Participants

Reaction Conditions

Reaction Steps

A sealed tube was charged with 6-chloro-N-(5-(4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-yl)[1,2,4]triazolo[1,5-a]pyridin-8-amine 108d (196 mg, 0.51 mmol), 3-(acetoxymethyl)-2-(1-oxo-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-2(1H)-yl)pyridin-4-ylboronic acid 114e (200 mg, 0.52 mmol), PdCl2(dppf) (24 mg, 0.030 mmol), K3PO4 (212 mg, 1.0 mmol), sodium acetate (83 mg, 1.0 mmol), acetonitrile (10 mL), and water (0.2 mL). The mixture was heated at 140° C. for 0.5 h. It was then cooled to room temperature and filtered. The filtrate was evaporated in vacuo. The residue was purified by silica-gel column chromatography eluting with 20:1 dichloromethane/methanol to afford 122a (200 mg, 56%) as a white solid. MS-ESI: [M+H]+ 689.3.

Provenance & Evidence