Dimethylformamide → HCID 59504447, compound

Participants

Reaction Conditions

Reaction Steps

Combine 2-hydroxy-cyclohex-1-enecarboxylic acid ethyl ester (8.92 g, 29.5 mmol), 2-methoxyphenylboronic acid (5.0 g, 32.4 mmol), DMF (60.0 mL), methanol (20.0 mL), and sodium carbonate in water (40.0 g in 40 mL) at room temperature. Purge several times with nitrogen then add Pd(OAc)2 (72.0 mg, 1 mmol %) and 1,4-bis(diphenyl phosphino)butane (170.0 mg) and purge again with nitrogen. Stir at 70° C. under nitrogen for 5 hours then filter reaction wash with Methanol and ethyl acetate. Concentrate reaction mixture on rotovap and add ethyl acetate. Wash 5 times with brine and dry over anhydrous sodium sulfate. Concentrate and flash chromatograph using 5 to 40% ethyl acetate/hexanes eluent to yield the titled compound (3.98 g, 52%). TLC Rf=0.25 in 10% ethyl acetate/hexanes. 1H NMR (CDCl3): 7.2 (t, 1H, J=6.0 Hz), 6.9 (m, 3H),), 3.8 (m, 5H), 2.5 (m, 4H), 1.8 (m, 4H), 0.8 (t, 3H, J=7 Hz).

Provenance & Evidence