反应详情

A stirring solution of cyclobutyl(phenyl)methanone (3.0 g, 18.8 mmol) in 800 ml of benzene was irradiated with a 1000 W mercury arc lamp for 48 h at room temperature in a nitrogen atmosphere. The solution was concentrated and the residue (3.1 g) was purified by column chromatography (10%-25% ethyl acetate in petroleum ether) to give the desired product as a white solid (0.9 g, 5.6 mmol, yield: 30%). 1H NMR (300 MHz, CDCl3) δ ppm 7.41-7.28 (m, 5H), 3.04 (s, 2H), 2.82 (dd, J1=10.2 Hz, J2=2.4 Hz, 1H), 2.09 (s, 1H), 1.78 (d, J=2.4 Hz, 1H), 1.50 (d, J=3.3 Hz, 1H), 1.33 (dd, J1=9.9, J2=3.3 Hz, 1H).

1. concentrationThe solution was concentrated
2. customthe residue (3.1 g) was purified by column chromatography (10%-25% ethyl acetate in petroleum ether)