P. Rajakumar, M. Gayatri Swaroop / Tetrahedron Letters 45 (2004) 6165–6167
6167
6
7
. Rajakumar, P.; Murali, V. Tetrahedron 2004, 61, 2351–2360.
. Garc ꢀı a Mart ꢀı nez, A.; Os ꢀı o Barcina, J.; de Fresno Cerezo,
J ¼ 7:84, 7.8 Hz); 7.14 (d, 8H, J ¼ 8:28 Hz); 7.50 (d, 8H,
þ
J ¼ 7:8 Hz); m=z (FAB-MS) 720 (M ).
ꢀ
A.; del Rosario Torres Salvador, M. Chem. Eur. J. 2003, 9,
1
22. 2d: Yield 23%; mp 134 °C; H NMR (400 Hz, CDCl
3.49 (s, 12H); 5.11 (s, 8H); 6.24 (s, 4H); 6.80 (s, 4H); 7.02
3
): d
1
157–1165.
. Meier, H.; Fetten, M. Tetrahedron Lett. 2000, 41, 1535–
538.
. Heo, R. W.; Lee, T. R. J. Organomet. Chem. 1999, 31–42.
8
9
(t, 4H, J ¼ 7:32 Hz); 7.09 (m, 8H); 7.21 (d, 4H,
1
3
1
J ¼ 8:32 Hz); 7.48 (d, 4H, J ¼ 7:8 Hz);
C NMR
3
(100.4 Hz, CDCl ): d 44.47, 55.87, 55.91, 109.49, 110.62,
1
1
1
1
1
0. Srinivasan, M.; Sankararaman, S.; Dix, I.; Jones, P. G.
Org. Lett. 2000, 2, 3849–3851.
1. Yu, J.; Wang, T.; Liu, X.; Deschamps, J.; Anderson, J. F.;
Liao, X.; Cook, J. M. J. Org. Chem. 2003, 68, 7565–7581.
2. Nussbaum, F. V. Angew. Chem., Int. Ed. 2003, 42, 3068–
111.10, 118.60, 118.90, 121.45, 125.95, 126.02, 128.80,
þ
136.77, 150.80, m=z (FAB-MS) 840 (M ).
1
23. 2e: Yield 18%; mp 137 °C; H NMR (400 Hz, CDCl
5.2 (s, 8H); 6.84 (s, 4H); 7.07–7.18 (m, 20H); 7.38 (d, 8H,
3
): d
1
3
J ¼ 8:28 Hz); 7.52 (d, 8H, J ¼ 7:3 Hz);
C NMR
3
071.
3. Bodwell, G. J.; Li, J.; Miller, D. O. Tetrahedron 1999, 55,
2939–12956.
(100.4 Hz, CDCl ): d 49.51, 109.42, 110.54, 118.83,
3
119.06, 121.65, 125.77, 127.25, 127.33, 128.98, 136.68,
þ
1
137.03, m=z (FAB-MS) 872 (M ).
24. Hart, H.; Rajakumar, P. Tetrahedron 1995, 51, 1313–
4. Ortner, B.; Waibel, R.; Gmeiner, P. Angew. Chem., Int.
Ed. 2001, 40, 1283–1285.
1336.
25. 3a: Yield 24%; mp >300 °C; H NMR (400 Hz, CDCl
1
1
1
5. Bodwell, G. J.; Li, J. Org. Lett. 2002, 4, 127–130.
6. Black, D. StC.; Craig, D. C.; Rezaie, R. Chem. Commun.
3
): d
6.74 (s, 4H); 7.06 (d, 8H, J ¼ 8:3 Hz); 7.36 (d, 8H,
1
3
2
002, 810–811.
7. Gibe, R.; Green, J. R.; Davidson, G. Org. Lett. 2003, 5,
003–1005.
8. James, P. N.; Snyder, H. R. Org. Synth. Coll. Vol. IV, 539–
42.
9. 1a: Yield 19%; mp 126 °C; H NMR (400 MHz, CDCl
.8 (s, 4H); 6.3 (s, 2H); 6.72 (s, 2H); 7.29 (t, 2H,
J ¼ 8:2), 7.42–7.50 (m, 8H); C NMR (100.4 Hz, CDCl
3
):
1
1
1
d 124.90, 124.98, 126.91, 129.20, 129.83, 130.96, 136.58,
þ
1
140.19, 141.62; m=z (FAB-MS) 508 (M ).
1
26. 3b: Yield 18%; mp >300 °C; H NMR (400 Hz, CDCl
3
): d
5
6.78 (s, 4H); 6.91(d, 8H, J ¼ 8:32 Hz); 7.25 (d, 8H,
1
13
3
): d
J ¼ 8:32 Hz); 7.32–7.42 (m, 6H); C NMR (100.4 Hz,
5
CDCl
3
): d 125.21, 124.69, 127.12, 128.12, 128.94, 130.66,
þ
J ¼ 7:45 Hz); 7.46 (d, 4H, J ¼ 8:6 Hz); 7.64 (t, 2H,
135.46, 139.64, 142.67; m=z (FAB-MS) 666 (M ).
1
J ¼ 7:45 Hz); 7.79 (d, 2H, J ¼ 8:6 Hz); 8.17 (d, 2H,
27. 3c: Yield 25%; mp >300 °C; H NMR (400 Hz, CDCl
3
): d
1
3
J ¼ 7:4 Hz); C NMR (100.4 MHz, CDCl
3
): d 46.21,
08.45, 112.02, 119.37, 120.04, 124.17, 125.12, 128.91,
3.37 (s, 6H); 6.86 (s, 4H); 7.22 (d, 8H, J ¼ 7:8 Hz); 7.36 (d,
1
3
1
1
8H, J ¼ 7:84 Hz) 7.41–7.48 (m, 6H); C NMR (100.4 Hz,
þ
29.53, 130.28, 136.41, 153.91, m=z (FAB-MS) 360 (M ).
): d
.98 (s, 4H); 6.09 (s, 1H); 6.49 (s, 2H); 6.79 (s, 2H); 7.06–
CDCl ): d 51.49, 125.75, 126.4, 127.04, 127.19, 129.42,
3
1
2
0. 1b: Yield 24%; mp 297 °C; H NMR (400 MHz, CDCl
3
130.4, 138.12, 139.68, 140.54, 205.47; m=z (FAB-MS) 624
(M ).
þ
4
1
7
.12 (dd, 4H, J ¼ 7:8 Hz); 7.14–7.18 (m, 3H); 7.23 (d, 2H,
28. 3d: Yield 24%; mp >300 °C; H NMR (400 Hz, CDCl
3
): d
1
3
J ¼ 7:8 Hz); 7.59 (d, 2H, J ¼ 7:3 Hz);
C
49.63, 110.06, 114.21, 119.65,
NMR
6.74 (s, 4H); 7.04 (d, 8H, J ¼ 7:8 Hz); 7.31 (d, 8H,
1
3
(
100.4 MHz, CDCl
3
)
20.13, 122.18, 124.96, 126.05, 126.18, 128.06, 128.50,
J ¼ 8:31 Hz); 7.42–7.64 (m, 6H); C NMR (100.4 Hz,
1
1
CDCl
3
): d 123.32, 123.61, 126.02, 126.6, 126.96, 128.66,
þ
þ
38.03, 139.03, m=z (FAB-MS) 360 (M ).
133.37, 139.03, 143.92; m=z (FAB-MS) 666 (M ).
29. Du, C. J. F.; Hart, H.; Ng, K. K. D. J. Org. Chem. 1986,
51, 3162–3165.
1
2
1. 2c: Yield 20%; mp 135 °C; H NMR (400 Hz, CDCl
3
): d
.13 (s, 8H); 6.77 (s, 4H); 6.94 (s, 4H); 7.05 (dd, 8H,
5