Triethylamine → tert-Butyl 4-(4-((4-((2-(1-amino-1-oxopropan-2-yl)phenyl)ethynyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)-1H-pyrazol-1-yl)piperidine-1-carboxylate

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Reaction Steps

A mixture of tert-butyl 4-(4-((4-chloro-5-(trifluoromethyl)pyrimidin-2-yl)amino)-1H-pyrazol-1-yl)piperidine-1-carboxylate K8 (2.054 g, 4.597 mmol), 2-(2-ethynylphenyl)propanamide K7 (1.027 g, 5.929 mmol), CuI (0.017 g, 0.089 mmol), PdCl2(PPh3)2 (0.062 g, 0.088 mmol) and t-Bu3PH.BF4 (0.025 g, 0.087 mmol) in dioxane (20 mL) and Et3N (2.5 mL, 18 mmol) under a nitrogen atmosphere was heated in the microwave at 110° C. for 40 minutes. The mixture was concentrated under reduced pressure and purified using silica gel column chromatography (50-100% EtOAc in petroleum benzine 40-60° C.) to give the title compound A65 (2.121 g, 79%). 1H NMR (400 MHz, d6-DMSO) δ 10.48-10.33 (m, 1H), 8.82-8.73 (m, 1H), 8.09-7.97 (m, 1H), 7.64-7.55 (m, 2H), 7.56-7.44 (m, 2H), 7.41-7.34 (m, 1H), 7.29-7.22 (m, 1H), 7.01 (s, 1H), 4.39-4.29 (m, 1H), 4.18-3.99 (m, 3H), 2.99-2.80 (m, 2H), 2.02-1.94 (m, 2H), 1.83-1.70 (m, 2H), 1.41 (s, 9H), 1.39-1.31 (m, 3H).

Provenance & Evidence