4-Cyanophenol → 4-[(2-Methylbut-3-yn-2-yl)oxy]benzonitrile

Participants

Reaction Steps

To a solution of 4-cyanophenol (6.55 g, 55.0 mmol) in anhydrous acetonitrile (50 mL) at ~0° C. under argon was added DBU (9.90 mL, 66.2 mmol). After the solution had cooled to ~0° C., 3-chloro-3-methyl-1-butyne (7.10 g, 69.2 mmol) was added followed by copper(II) acetylacetonate (87.4 mg, 033 mmol). After stirring at ~0° C. for 7 hours, the mixture was concentrated at reduced pressure. The residue was partitioned between 1N HCl (70 mL) and toluene (300 mL). The organic fraction was washed with 1N HCl (2×60 mL), 1N NaOH (2×50 mL), 1N NaHCO3, and brine. After drying (magnesium sulfate), the solvent was removed at reduced pressure to give crude title compound as a pale yellow oil. Distillation of the crude material (bulb to bulb) afforded the title compound as a colorless, low melting solid (9.56 g).

Provenance & Evidence