2. Hz, H. , and 9. , 23 (s, 9H, H-tBu); 13 C NMR (100 MHz, 25 °C, CDCl 3 ): ? = 164, p.7842

H. Hz, 2. -ar, and H. , 13 (s, 3H, H?Me); Anal. calcd (%) for C 39, p.55

3. , H. -ar, 2. , and H. , Single crystals for X-ray diffraction structure analysis were obtained by slow evaporation of a concentrated solution of 2 in CDCl 3ZnCl (3) White solid, 85% yield. 1 H NMR (300 MHz, 25 °C, CDCl 3 ): ? = 9.5 (d J = 4.8 Hz), 6.94 (t, J = 7.6 Hz, 1H, H-Ar), 6.70 (d, J = 2.8 Hz, 1H, H-Ar-phenol), 4.23 (d, J = 15.2 Hz, 1H, H-Bz), 4.04 (d, J = 16, pp.65-72

. Hz, 14 (d, J = 16.4 Hz, 1H, H-Bz), 1.51 (s, 9H, H-tBu), 1.22 (s, 9H, H-tBu) CDCl 3 ): ? = ?20, p.520

+. [. Cl and . Mecn, Green solid CDCl 3 ) ? 121 peaks, 18H); ?0.7 (2H); magnetic susceptibility (CDCl 3 , 293 K) ? eff = 4.8? B ; ESI MS m/z 516, UV-visible (CH 2 Cl 2 ) ? (?) 603 nm (153 M ?1 cm ?1 ), pp.1-4

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URL : https://hal.archives-ouvertes.fr/hal-00341118