Trifluoroacetic acid → 3-[5-(3-Methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]azepan-2-one

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Reaction Steps

To a microwave vial, were added the product of Step 2 (44.4 mg, 0.078 mmol), trifluoroacetic acid (0.3 ml, 3.89 mmol), trifluoromethanesulfonic acid (10 μl, 0.078 mmol) and dichloromethane (1 ml). The mixture was irradiated at 110° C. in the microwave for 40 min. The mixture was then purified by reverse phase HPLC to afford the title compound (12 mg, 0.021 mmol, 27.3% yield).

Provenance & Evidence