1
5
(
4
lit., 69–72 ЊC); δ (400 MHz, CDCl ) 7.35 (m, 2 H), 7.45 (m,
5 (a) S. Torii, H. Tanaka and K. Morisaki, Tetrahedron Lett., 1985, 26,
1655; (b) C. Amatore and A. Jutand, Organometallics, 1988, 7, 2203;
c) A. Jutand, S. Negri and A. Mosleh, J. Chem. Soc., Chem.
H
3
Ϫ1
H), 7.61 (m, 4 H); νmax(KBr)/cm 3060, 1608, 1475, 832;
m/z (EI) 154 (100), 152 (29), 77 (6), 76 (18), 63 (9), 51 (8).
(
Commun., 1992, 1729.
6
7
P. E. Fanta, Synthesis, 1974, 9.
(a) R. C. Larock, J. Org. Chem., 1976, 41, 2241 and references cited
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Acknowledgements
Generous financial support by KOSEF and the Ministry of
Education (BSRI-96-3420) is gratefully acknowledged.
1
468.
8
9
(a) A. S. Hay, J. Org. Chem., 1962, 27, 3320; (b) E. Valent, M. A.
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2
1
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2
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(
Tetrahedron Lett., 1977, 47, 4089; (h) A. Jutand and A. Mosleh,
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Paper 6/08384F
Received 13th December 1996
Accepted 17th January 1997
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J. Chem. Soc., Perkin Trans. 1, 1997