1H NMR (400 MHz, CDCl3) δ 7.43 (d, J = 7.0 Hz, 4H), 7.39 – 7.28 (m, 6H), 2.06 – 1.98 (m, 2H), 1.68 (s, 6H), 0.92 (t, J= 7.4 Hz, 3H). 13C{1H} NMR (101 MHz, CDCl3) δ 172.1, 135.8, 130.0, 129.5, 128.7, 128.4, 61.2, 33.0, 27.0, 8.9. HRMS (EI) m/z: calcd for C21H21NO2, 319.1572; found, 319.1570.