Triethylamine → Methyl 2-(2-((2-(4-(1-(tert-butoxycarbonylamino)ethyl)phenylamino)-5-(trifluoromethyl)pyrimidin-4-yl)ethynyl)phenyl)acetate

Participants

Reaction Conditions

Reaction Steps

A suspension of tert-butyl 1-(4-(4-chloro-5-(trifluoromethyl)pyrimidin-2-ylamino)phenyl)ethylcarbamate (A63) (487 mg, 1.17 mmol), Et3N (760 μL), methyl 2-(2-ethynylphenyl)acetate (K1) (244 mg, 1.40 mmol), PdCl2(PPh3)2 (41 mg, 0.058 mmol), CuI (22.0 mg, 0.117 mmol) and PPh3 (36.0 mg, 0.117 mmol) in DMF (4.6 mL) was heated under microwave irradiation at 120° C. for 15 minutes. The volatiles were evaporated in vacuo and the residue purified by silica gel column chromatography (CombiFlash Rf, SiO2 cartridge, 0-25% EtOAc in cyclohexane) to give the title compound A64 as a yellow solid (400 mg, 62%); 1H NMR (300 MHz, CDCl3) δ 8.66 (s, 1H), 7.70 (dd, J=7.83, 1.17 Hz, 1H), 7.61 (d, J=8.61 Hz, 2H), 7.43 (m, 3H), 7.34 (d, J=8.40 Hz, 2H), 4.78 (m, 2H), 3.98 (s, 2H), 3.73 (s, 3H), 1.61 (s, 1H, peak obscured), 1.46 (m, 12H). LCMS-B: rt 8.90 min; m/z 555 [M+H]+.

Provenance & Evidence