Cesium carbonate → HCID 86616674, compound

Participants

Reaction Steps

A dimethylacetamide solution (2 mL) of 3-methyl-6-(methyloxy)-2-[3-(methyloxy)phenyl]-1-naphthalenol (247) (0.072 g, 0.25 mmol, 1 equiv) was treated with 4-fluorobenzaldehyde (0.030 mL, 0.27 mmol, 1.1 equiv) followed by cesium carbonate (0.096 g, 0.29 mmol, 1.2 equiv). After 10 min at gentle reflux, the mixture was diluted with H2O (2 mL) and extracted with EtOAc (3×5 mL). The pooled organic portions were dried (Na2SO4) and concentrated. Radial chromatography (SiO2, 1 mm plate, 80:20; hexanes/EtOAc) afforded the title compound (248) as a pale yellow oil (0.060 g, 61%). 1H NMR (CDCl3, 300 MHz) δ 9.80 (s, 1H), 7.68-7.59 (m, 4H), 7.19-7.14 (m, 2H), 7.05 (dd, J=9.2, 2.4 Hz, 1H), 6.78-6.65 (m, 5H), 3.93 (s, 3H), 3.64 (s, 3H), 2.26 (s, 3H). TLC (75:25; hexanes/EtOAc): Rf=0.55.

Provenance & Evidence