Hydrochloric Acid → HCID 86703556, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (8-methyl-1,4-dioxaspiro[4.5]decan-8-yl)methanol (0.301 g, 1.65 mmol) in anhydrous dimethylsulfoxide (3 mL) were added cesium carbonate (1.07 g, 3.30 mmol) and tert-butyl 5-chloro-2,4-difluorobenzoate (0.37 g, 1.49 mmol) and the reaction mixture was stirred at 70° C. for 16 hours. The reaction mixture was cooled down to room temperature and acidified to pH=1 with 5% aqueous hydrochloric acid solution and extracted with diethyl ether (2×15 mL). The combined organic layers were washed with brine (15 mL); dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. Purification of the residue by column chromatography (0 to 10% ethyl acetate in hexanes) afforded the title compound (0.28 g, 45%). 1H NMR (300 MHz, CDCl3) δ 7.85 (d, J=7.67 Hz, 1H), 6.60 (d, J=12.13 Hz, 1H), 3.96-3.89 (m, 4H), 3.72 (s, 1H), 1.98-1.37 (m, 17H), 1.12 (s, 1H).

Provenance & Evidence