tert-Butyl 4-(4-((4-((3-(methoxycarbonyl)phenyl)ethynyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperazine-1-carboxylate → tert-Butyl 4-(4-((4-(3-(methoxycarbonyl)phenethyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperazine-1-carboxylate

Beteiligte Stoffe

Reaktionsschritte

tert-Butyl 4-(4-((4-((3-(methoxycarbonyl)phenyl)ethynyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperazine-1-carboxylate (I32) (0.180 g, 0.309 mmol) was dissolved in dry DMF (10 mL) under an atmosphere of nitrogen. 10% Pd/C (0.100 g) in EtOAc (10 mL) was added to the solution and the atmosphere was changed to hydrogen gas (balloon). The reaction was sealed with a balloon and stirred at room temperature for 18 hours after which the reaction was flushed with nitrogen gas and Pearlman's catalyst (0.150 g) in EtOAc (5 mL) was added. The atmosphere was again changed to hydrogen gas (balloon) and the reaction was sealed with balloon and stirred for 20 hours at room temperature. The catalyst was removed by filtration through Celite, which was washed with EtOAc (5×10 mL). The solvent was removed in vacuo to give a yellow oil which was purified by silica gel chromatography (Biotage Isolera, 40 g Si Cartridge, 0-40% EtOAc in petroleum benzine 40-60° C.) to give the title compound (I33) (0.120 g, 66% yield) as a yellow foam; 1H NMR (400 MHz, d6-DMSO) δ 10.01 (s, 1H), 8.60 (s, 1H), 7.88-7.77 (m, 2H), 7.61-7.39 (m, 4H), 6.93 (d, J=9.1 Hz, 2H), 3.85 (s, 3H), 3.52-3.42 (m, 4H), 3.21-2.99 (m, 8H), 1.42 (s, 9H). LCMS Method C: rt 6.86 min; m/z 586.3 [M+H]+.

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