Potassium Phosphate, Tribasic → Acetic acid 2-{5-[5-(1-amino-1-methyl-ethyl)-pyridin-2-ylamino]-1-methyl-6-oxo-1,6-dihydro-pyridin-3-yl}-6-(6-tert-butyl-8-fluoro-1-oxo-1H-phthalazin-2-yl)-benzyl ester

Participants

Reaction Conditions

Reaction Steps

3-[5-(1-Amino-1-methyl-ethyl)-pyridin-2-ylamino]-5-bromo-1-methyl-1H-pyridin-2-one (160 mg, 0.474 mmol), Acetic acid 2-(6-tert-butyl-8-fluoro-1-oxo-1H-phthalazin-2-yl)-6-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzyl ester (235 mg, 0.474 mmol), x-phos (34 mg, 0.0712 mmol), potassium phosphate (252 mg, 1.186 mmol) were dissolved in dioxane (4 ml) and water (1 ml). Finally bis(dibenzylideneacetone)palladium (41 mg, 0.0712 mmol) was added and heated in the microwave to 125° C. for 30 min. The reaction mixture was filtered, washed with dioxane, partially concentrated and dry loaded to a 24 g SiOH column. Purification by chromatography with 0-10% MeOH (contains 1% NH4OH) in DCM for 30 min afforded Acetic acid 2-{5-[5-(1-amino-1-methyl-ethyl)-pyridin-2-ylamino]-1-methyl-6-oxo-1,6-dihydro-pyridin-3-yl}-6-(6-tert-butyl-8-fluoro-1-oxo-1H-phthalazin-2-yl)-benzyl ester (159 mg, 54%) as a yellow solid. MS (H+) 625.2.

Provenance & Evidence