1. Zimmerman, S.C. Top. Curr. Chem.
1993, 165, 71.
2. Harmata, M.; Barnes, C.L. Tetrahedron Lett.
1990, 31, 1825.
3. Data on 3: mp > 300 °C; lH NMR (CDC13, 500 MHz) δ 7.70 (d, 2H, J = 8.3 Hz), 7.62 (d, 2H, J = 7.8 Hz), 7.54 (d, 2H, J = 8.4 Hz), 7.34, (t, 2H, J = 7 Hz), 7.28 (t, 2H, J = 7 Hz), 7.13 (d, 2H, J = 8 Hz), 6.75 (s, 2H), 5.37 (d, 2H, J = 6.4 Hz), 5.32 (d, 2H, J = 6.4 Hz), 3.61 (dd, 2H, J = 6.4, 16.2 Hz), 3.55 (dd, 2H, J = 6.4, 16.2 Hz), 3.02 (d 2H, J = 16.2 Hz), 2.81 (d, 2H, J = 16.2 Hz); 13C NMR (CDCl3, 125 MHz) δ 136.9, 134.9, 132.4, 131.8, 128.9, 128.4, 126.9, 126.3, 126.3, 126.1, 125.7, 125.2, 123.5, 122.5, 69.8, 69.3, 34.6, 32.7; HRMS exact mass calcd for C34H26O2: 466.1933, found 466.1927.
4. Data for 3/maleic anhydride: Formula: C34H26O2·C4H2O3; MW = 564.63 Space Group: P21/c; a = 7.1332(10)Å, b = 20.343(2)Å, c = 18.834(3)Å; V = 697.6(7)Å3; Z = 4; Dcalc = 1.393 Mg.m-3; mu = 0.09 mm-1; F(000)=1184; Radiation=MoKα (λ=0.70930Å); Temperature=-100(1)°C; Final R=0.037 for 3174 reflections with I>2.5σ(I).
5. Hunter, C.A. Angew. Chem. Int. Ed. Engl.
1993, 32, 1584.