Potassium Carbonate → HCID 59464307, compound

Participants

Reaction Conditions

Reaction Steps

[4-(Dibenzylamino)phenyl]boronic acid (UK Patent Application No. GB 2276161 (1994)) (400 mL, 1.26 mmol) was stirred in 5 mL dry toluene and potassium carbonate was added followed by ethyl (3-bromophenyl)acetate (338 mg, 1.39 mmol) as a solution in toluene (1 mL). The reaction vessel was evacuated and refilled with nitrogen (5 times). Pd(PPh3)4 (73 mg, 0.06 mmol) was added as a solution in toluene (1 mL) and the vessel was deoxygenated as before. The reaction mixture was heated at 90° C. for 16 h then cooled and filtered through diatomaceous earth. Volatile material was removed by evaporation, the residue was adsorbed onto silica and purified by chromatography eluting with 10-50% EtOAc/isohexane to give the title compound (175 mg, 32%) as a gum; 1H NMR δ 1.18 (t, 3H), 3.67 (s, 2H), 4.07 (q, 2H), 4.76 (s, 4H), 6.76 (d, 2H), 7.11 (d, 2H), 7.44-7.20 (m, 14H); MS m/e MH+ 436.

Provenance & Evidence