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toli, G.; Bosco, M.; Marcantoni, E.; Torregiani, E.; Sam-
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Maiuolo, L.; Procopio, A.; Sambri, L.; Tagarelli, A.
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1
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0. Yadav, V. K.; Babu, K. G.; Mittal, M. Tetrahedron 2001,
34. Control experiments without acetyl anhydride demon-
strated that 2,4-diphenyl-4-methyl-1-pentene arose from
the acylated product, which could form a tertiary ben-
zylic carbocation by acetate elimination or give elimina-
tion to a-methylstyrene, followed by dimerization.
5
7, 7047–7051.
1. Choudary, B. M.; Kantam, M. L.; Neeraja, V.; Bandy-
opadhyay, T.; Reddy, P. N. J. Mol. Catal. A: Chem.
1
999, 140, 25–29.
2
2
2
2
2
2. Orita, A.; Sakamoto, K.; Hamada, Y.; Mitsutome, A.;
2,4-Diphenyl-4-methyl-1-pentene: l
1.21 (s, 6H, Me); 2.82 (s, 2H, CH
ꢀCH); 5.13 (d, 1H, J 1.98, ꢀCH); 7.2–7.4 (m, 10H, ArH).
(75 MHz, CDCl ) 28.40 (Me); 28.81 (Me); 38.63 (C);
49.54 (CH ); 116.98 (CH ); 125.61 (CH); 126.14 (CH);
H
(300 MHz, CDCl
)
3
Otera, J. Tetrahedron 1999, 55, 2899–2910.
); 4.77 (t, 1H, J 0.82,
2
3. Ballini, R.; Bosica, G.; Carloni, S.; Ciaralli, L.; Maggi,
R.; Sartori, G. Tetrahedron Lett. 1998, 39, 6049–6052.
4. Allevi, P.; Ciuffreda, P.; Longo, A.; Anastasia, M. Tetra-
hedron: Asymmetry 1998, 9, 2915–2924.
l
C
3
2
2
126.22 (CH); 126.70 (CH); 128.03 (CH); 128.22 (CH);
143.42 (C); 146.65 (C); 149.35 (C).
5. Yamada, S.; Sugaki, T.; Matsuzaki, K. J. Org. Chem.
1
996, 61, 5932–5938.
35. 2-(p-Acetoxyphenyl) ethyl acetate:
DMSO-d ) 1.96 (s, 3H, Me); 2.25 (s, 1H, Me); 2.75 (t,
2H, J 7.07, CH ); 4.12 (t, 2H, J 7.07, CH ); 6.60–7.18
(A system, 4H, J 8.49, ArH). l (75 MHz, DMSO-d
20.66 (Me); 20.77 (Me); 33.58 (CH ); 64.74 (CH ); 121.67
l
H
(300 MHz,
6. (a) Procopiou, P. A.; Baugh, S. P. D.; Flack, S. S.; Inglis,
G. G. A. Chem. Commun. 1996, 2625–2626; (b) Proco-
piou, P. A.; Baugh, S. P. D.; Flack, S. S.; Inglis, G. G. A.
J. Org. Chem. 1998, 63, 2342–2347.
6
2
2
B
2
)
6
2
C
2
2
2
7. (a) Barrett, A. G. M.; Braddock, D. C. Chem. Commun.
(CH); 127.88 (CH); 135.50 (C); 149.08 (C); 169.23 (CꢀO);
170.28 (CꢀO).
1
997, 351–352; (b) Damen, E. W. P.; Braamer, L.;
Scheeren, H. W. Tetrahedron Lett. 1998, 39, 6081–6082;
c) Clarke, P. A.; Kayaleh, N. E.; Smith, M. A.; Baker, J.
R.; Bird, S. J.; Chan, C. J. Org. Chem. 2002, 67, 5226–
231.
8. (a) Saravanan, P.; Singh, V. K. Tetrahedron Lett. 1999,
0, 2611–2614; (b) Chandra, K. L.; Saravanan, P.; Singh,
36. 2-(p-Hydroxyphenyl) ethyl acetate:
DMSO-d ) 1.97 (s, 3H, Me); 2.88 (t, 2H, J 6.87, CH
4.20 (t, 2H, J 6.87, CH ); 7.00–7.40 (A system, 4H, J
8.49, ArH); 9.40 (s, 1H, OH). l (75 MHz, DMSO-d
20.65 (Me); 33.68 (CH ); 64.27 (CH
129.78 (CH); 135.52 (C); 155.91 (C); 170.28 (CꢀO).
37. 2-(p-Acetoxyphenyl) ethanol l (300 MHz, DMSO-d
2.24 (s, 1H, Me); 2.71 (t, 2H, J 6.89, CH
J 6.89 and 5.02, CH ); 4.67 (t, 1H, J 5.02, OH); 7.02–7.32
(A system, 4H, J 8.36, ArH). l (75 MHz, DMSO-d
20.88 (Me); 38.32 (CH ); 62.10 (CH ); 121.43 (CH);
129.84 (CH); 137.16 (C); 148.74 (C); 169.36 (CꢀO).
38. CeCl ·7H O which is the starting material for preparing
cerium(III) triflate can be purchased from Fluka (500 g,
1.34 mol, 155.50 €). Meanwhile, the price of Bi , the
starting material for preparing Bi(OTf) , also commer-
cially available from Fluka, is 103.30 € for 500 g (1.07
l
(300 MHz,
H
(
6
);
2
B
2 2
2
5
C
6
)
)
2
2
2
2
); 115.18 (CH);
4
R. K.; Singh, V. K. Tetrahedron 2002, 58, 1369–1374.
9. (a) Ishihara, K.; Kubota, M.; Kurihara, H.; Yamamoto,
H. J. Am. Chem. Soc. 1995, 117, 4413–4414; (b) Ishihara,
K.; Kubota, M.; Kurihara, H.; Yamamoto, H. J. Org.
Chem. 1996, 61, 4560–4567; (c) Zhao, H.; Pendri, A.;
Greenwald, R. B. J. Org. Chem. 1998, 63, 7559–7562.
0. Chauhan, K. K.; Frost, C. G.; Love, I.; Waite, D. Synlett
H
6
); 3.56 (dt, 2H,
2
2
B
2
)
6
2
C
2
2
3
3
3
2
1
999, 11, 1743–1744.
1. (a) Orita, A.; Tanahashi, C.; Kakuda, A.; Otera, J.
Angew. Chem., Int. Ed. 2000, 39, 2877–2879; (b) Orita,
A.; Tanahashi, C.; Kakuda, A.; Otera, J. J. Org. Chem.
O
2 3
3
2
001, 66, 8926–8934.
mol) and the price of Sc(OTf) , sold by Fluka, is 144.10
€ for 5.0 g (0.01 mol).
3
3
2. (a) Bartoli, G.; Bosco, M.; Marcantoni, E.; Nobili, F.;