1H NMR (400 MHz, CDCl3) δ 7.39 (d, J = 7.8 Hz, 2H), 7.35 – 7.30 (m, 3H), 7.22 (t, J = 7.2 Hz, 3H), 7.15 (d, J = 7.4 Hz, 1H), 6.06 (s, 1H), 2.93 – 2.83 (m, 2H), 2.71 (d, J = 18.0 Hz, 1H), 2.49 (dd, J = 47.8, 17.8 Hz, 2H), 2.22 – 2.10 (m, 2H), 1.97 (dd, J = 14.3, 6.5 Hz, 2H), 1.83 (ddd, J = 19.4, 12.5, 6.2 Hz, 3H). 13C NMR (101 MHz, CDCl3) δ 213.68, 141.56, 141.43, 137.17, 135.76, 130.30, 128.72, 128.28, 126.98, 126.88, 126.44, 125.00, 122.19, 48.47, 35.68, 34.66, 34.10, 30.24, 24.58, 23.23. HRMS (ESI): calcd for C22H23O [M + H]: 303.1749, found: 303.1752.
![/1'-phenyl-8,9-dihydrospiro[benzo[7]annulene-6,4'-cyclohex[6]en]-5(7H)-one/2252314-26/化学当当/易物当当](http://18427787.s21i.faimallusr.com/2/1/ABUIABACGAAg1t7wmAYom4L26gQw8gE4kgE.jpg)