HCID 68512093, compound → N-(4-(1-(4-methoxybenzyl)-3-(5-((4-methylpiperazin-1-yl)methyl)furan-3-yl)-1H-pyrazolo[3,4-b]pyridin-4-yloxy)-3-fluorophenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of N-(4-(1-(4-methoxybenzyl)-3-iodo-1H-pyrazolo[3,4-b]pyridin-4-yloxy)-3-fluorophenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide (35 mg, 0.0503 mmol) and a 14:86 mixture of 1-methyl-4-((4-(tributylstannyl)furan-2-yl)methyl)piperazine and 1-((4-bromo-5-(tributylstannyl)furan-2-yl)methyl)-4-methylpiperazine (26.0 mg, 0.0554 mmol, prepared in Example 66, Step B) in dioxane (0.5 mL) was sparged with N2 for 2 minutes. PdCl2(PPh3)2 (2 mg, 0.003 mmol) was added, and the reaction was heated to 90° C. for 18 hours in a sealed vessel. After cooling to ambient temperature, the crude reaction mixture was loaded directly on to a preparative TLC plate (0.5 mm thickness, Rf=0.60) eluting with 90:10 CHCl3/MeOH (containing 7N NH3). Isolated product as an off-white solid (27 mg, 83:17 mixture of N-(4-(1-(4-methoxybenzyl)-3-(3-bromo-5-((4-methylpiperazin-1-yl)methyl)furan-2-yl)-1H-pyrazolo[3,4-b]pyridin-4-yloxy)-3-fluorophenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide and N-(4-(1-(4-methoxybenzyl)-3-(5-((4-methylpiperazin-1-yl)methyl)furan-3-yl)-1H-pyrazolo[3,4-b]pyridin-4-yloxy)-3-fluorophenyl)-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide by 1H-NMR). The mixture of products were carried forward without further purification.

Provenance & Evidence