2-Methylpentane → HCID 178472474, compound

Participants

Reaction Conditions

Reaction Steps

A solution of ethyl 4-hydroxycyclohexanecarboxylate (2.0 g, 11.6 mmol) in DMF (3 ml) was added in one portion to a stirred suspension of sodium hydride (60% dispersion in mineral oil, 490 mg, 12.2 mmol) in DMF (15 mL) at 0° C. under an argon atmosphere. The mixture was stirred at 0° C. for 10 mins and then warmed to room temperature and stirred for 20 mins and then a solution of 1-fluoro-4-nitrobenzene (1.24 mL, 11.6 mmol) in DMF (2 mL) was added in one portion. The reaction mixture was stirred at room temperature for 2 h and then heated at 110° C. for 24 h. The solution was concentrated in vacuo to leave a residue that was taken up in EtOAc (250 mL) and H2O (150 mL) was added. The layers were separated and the organic layer was washed with H2O (2×100 mL) and brine (50 mL) and then dried (MgSO4) and concentrated in vacuo to leave an oil. The oil was taken up in a mixture of hot EtOAc and isohexane (1:1) and left for 20 h. Filtration, followed by concentration in vacuo of the filtrate left an oil, which was purified by column chromatography, using a gradient of 10-40% EtOAc:isohexane as eluent, to give the title compound (0.27 g, 16%) as an oil; 1H NMR (CDCl3) δ 1.24 (3H, q), 1.66-1.72 (2H, m), 1.74-1.79 (2H, m), 1.90-1.95 (2H, m), 1.98-2.04 (2H, m), 2.38-2.44 (1H, m), 4.11-4.16 (2H, q), 4.57-4.60 (1H, m), 6.90-6.93 (2H, d), 8.15-8.18 (2H, d).

Provenance & Evidence