Tetrahydrofuran → HCID 86672533, compound

Participants

Reaction Conditions

Reaction Steps

To a round-bottom flask was added a solution of methyl 5-cyano-4-(cyclobutylmethyl)-2-methylbenzoate (compound 189.3, 5.00 g, 20.6 mmol, 1.00 equiv) in a solvent mixture of THF and H2O (50 mL/25 mL). O,O′-diethyl dithiophosphate (15.0 g, 80.5 mmol, 4.00 equiv) was added to the reaction flask. The resulting solution was stirred at 80° C. for 48 h (CAUTION: significant gas evolution occurs—this and all other reactions described herein should be carried out in well ventilated fume hoods). After cooling to ambient temperature, the reaction was carefully quenched with 50 mL of brine. The mixture was extracted with 3×50 mL of ethyl acetate and the combined organic layers were dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified using silica gel column chromatography with ethyl acetate/petroleum ether (1:4) as eluent to furnish 1.20 g (21%) of the title compound as a yellow oil.

Provenance & Evidence