Ethyl Acetate → HCID 57835729, compound

Participants

Reaction Conditions

Reaction Steps

Cesium carbonate (108 mg, 0.33 mmol) was added into a mixture of 42.2 (25 mg, 0.11 mmol) and 6-(bromomethyl)-1,1,4,4-tetramethyl-1,2,3,4-tetrahydronaphthalene (76 mg, 0.27 mmol) in DMSO (1 mL). The mixture was stirred at 45° C. for 3 hours. After cooling, the mixture was treated with EtOAc (5 mL) and brine (5 mL). The organic layer was separated, washed with brine twice, dried and concentrated. The crude product was treated with THF (1 mL), MeOH (1 mL), water (0.5 mL) and NaOH (0.05 mL, 10N). The mixture was stirred at room temperature for 4 hours. The organic solvent was blown away by nitrogen, and the aqueous layer was acidified by HCl (0.18 mL, 3N). The aqueous layer was extracted with DCM. The organic layer was dried, concentrated and purified by flash chromatography to give 42 (15 mg). MS ESI (pos.) m/e: 436 (M+H). 1HNMR (CDCl3) δ 7.35 (m, 2H), 7.19 (m, 3H), 6.96 (d, 2H), 4.97 (s, 2H), 4.28 (m, 2H), 4.07 (t, 1H), 3.28 (dd, 1H), 2.79 (m, 3H), 1.71 (s, 4H), 1.30 (s, 12H).

Provenance & Evidence