“…4, 147.2, 146.7, 146.5, 142.6, 142.2, 140.9, 135.3, 135.0, 129.6, 128.7, 128.6, 127.7, 127.7, 127.5, 127.4, 126.8, 123.7, 123.0, 120.2, 111.6, 106.8, 69.6, 55.5 4, 147.2, 146.7, 146.6, 146.4, 142.5, 142.2, 141.2, 139.6, 137.7, 135.4, 135.0, 129.7, 128.7, 128.7, 128.6, 127.6, 127.5, 127.4, 127.2, 126.8, 124.2, 123.6, 123.0, 119.9, 119.9, 111.6, 106.7, 69.4, 55.5, 21.7 (d,J = 8.4 Hz,2H), 7.49−7.47 (m, 2 H), 7.42−7.26 (m, 4H), 7.10 (t, J = 7.6 Hz, 1H), 7.03−7.01 (m, 1H), 6.98−6.97 (m, 1H), 6.90−6.87 (m, 2H), 6.82 (t, J = 7.6 Hz, 2H), 6.60−6.56 (m, 5H), 3.78 (s, 3H), 3.72 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ 159. 8, 159.4, 148.4, 147.2, 146.6, 146.0, 142.5, 142.1, 141.1, 135.3, 135.2, 135.0, 129.6, 128.7, 128.6, 127.6, 127.5, 127.5, 126.8, 126.6, 123.5, 123.0, 121.0, 119.4, 113.6, 111.6, 109.1, 106.8, 69.5, 55.5, 55.5 2-Fluoro-5′-methoxy-2′,3′-diphenylspiro[fluorene-9,1′-indene] (3da): white solid; 27.0 mg, 67% yield; 1 H NMR (400 MHz, CDCl 3 ) δ 7.71 (d,J = 7.6 Hz,1H),7.65 (d,J = 8.4 Hz,1H), 7.47−7.26 (m, 7H), 7.18 (t, J = 7.6 Hz, 1H), 7.07-6.89 (m, 4H), 6.82 (t, J = 7.6 Hz, 2H), 6.61−6.53 (m, 4H) 3.78 (s, 3H); 13 C NMR (100 MHz, CDCl 3 ) δ 159. 6,147.4 (d,J CF = 205 Hz),146.6,146.4,143.0,141.0,140.7,140.0,135.0,134.7,133.3,129.6,128.7,128.6,128.1,128.0,127.9,127.7,127.6,126.9,123.9,123.7,123.0,121.1,120.3,111.8,107.0,69.4,…”