Cesium carbonate → HCID 86729626, compound

Participants

Reaction Steps

To a stirred solution of Intermediate 1 from Example 162 (100 mg, 0.3246 mmol) in tetrahydrofuran (5 mL), N-(4-amino-3-(trifluoro methyl)phenyl)-N-ethylacetamide (80 mg, 0.3246 mmol) and cesium carbonate (316 mg, 0.9738 mmol) were added and degassed for 10 min. To the reaction mixture palladium acetate (38 mg, 0.1623 mmol) and xanthphos (36.8 mg, 0.0973 mmol) were added and again degassed for another 5 min. The mixture was irradiated by microwave at 80° C. for 20 min. TLC showed completion of starting material (TLC system: 10% methanol/chloroform, (Rf): 0.5). The reaction was quenched with water (15 mL) and extracted with ethyl acetate (3×10 mL). The organic layer was separated, dried over sodium sulfate and concentrated. The crude compound was purified by prep-HPLC to obtain the title compound as yellow solid. (30 mg, 17%). 1HNMR (DMSO-d6) δ 0.98 (m, 3H), 1.70 (m, 3H), 1.85 (s, 1H), 3.63 (m, 2H), 5.77-5.80 (dd, 1H J=1.8 Hz and 10.2 Hz), 6.26-6.31 (dd, 1H J=1.8, 17 Hz), 6.44-6.51 (dd, 1H J=10.2, 17 Hz), 7.09-7.17 (m, 2H), 7.32-7.35 (dd, 1H J=1.7, 7.5 Hz), 7.48 (d, 1H J=7.1 Hz), 7.55 (s, 1H), 7.63 (d, 1H J=8.2 Hz), 7.72 (d, 1H J=8.2 Hz), 8.08 (s, 1H), 8.49 (s, 1H), 10.12 (s, 1H). MS m/z: 519.5 (ES+, M+H).

Provenance & Evidence