Ethylene Oxide → HCID 21875345, compound

Participants

Reaction Steps

To a solution of 2-butylfuran (3.00 g, 24.2 mmol) in THF (24 mL) at −78° C. was added n-BuLi (11.6 mL, 2.5 M, 29.0 mmol) dropwise over 10 min. The reaction was warmed to rt and stirred for 3.5 h. After cooling to 0° C., ethylene oxide (1.81 mL, 36.2 mmol) was added, the reaction was warmed to rt and stirring was continued for 19 h. The reaction was then cooled to 0° C. and quenched with sat. NH4Cl (20 mL), followed by extraction with diethyl ether (2×50 mL). The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo to give 4.07 g (100%) compound 502A as a bright orange oil. This material was used without further purification. HPLC: 96% at 3.23 min (retention time) (YMC Combiscreen ODS-A column, 4.6×50 mm, eluting with 10-90% aqueous methanol containing 0.2% phosphoric acid over 4 min, 4 mL/min, monitoring at 220 nm). MS (ES): m/z 169.22 [M+H]+.

Provenance & Evidence