1-Phenyl-1-propanone → HCID 22558559, compound

Participants

Reaction Conditions

Reaction Steps

A dry Schlenk tube was charged with Pd2 (DBA)3 (4.6 mg, 0.005 mmol) and sodium tert-butoxide (125 mg, 1.3 mmol). The tube was then evacuated and filled with argon. Toluene (1 mL), 5-bromo-m-xylene (185 mg, 0.136 mL, 1.0 mmol) and propiophenone (161 mg, 0.160 mL, 1.2 mmol) were sequentially added with a syringe, and the tube was sealed and heated in an, oil bath at 80° C. for 12 h. The mixture was cooled, and partitioned between ether and water. The aqueous layer was extracted twice with ether, and the combined organics were dried over Na2SO4, filtered and concentrated. Chromatography on silica gel, eluting first with hexane, then 4:1 toluene:hexane, gave 0.185 g (79%) of α-(3,5-dimethylphenyl)propiophenone, a clear oil. 1H NMR (CDCl3, 300 MHz) δ 7.96 (m, 2H); 7.48 (m, 1H); 7.38 (m, 214); 6.89 (s, 2H); 6.83 (s, 2H); 4.60 (q, 1H, J=6.9 Hz); 2.26 (s, 6H); 1.50 (d, 3H, J=6.9 Hz).

Provenance & Evidence