4966
H. W. G. van Herwijnen, U. H. Brinker / Tetrahedron 58 ꢀ2002) 4963±4967
²
Strong Brùnsted acidic sites catalyze to a small amount
the disproportionation of benzyl alcohol into benzalde-
hyde and toluene.
Vienna determined the Ca/Na ratio of the zeolites by
AAS. Furthermore, we thank M. M. Bobek, O. Diwald,
and R. A. Wagner for helpful discussions.
It is hoped that this work will stimulate further interest in
the search towards simple model reactions. Carefully
conducted, such a strategy has the potential to generate
secure information that allows a detailed description of
the catalytic characteristics of a zeolite.
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2
1
21
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We are highly indebted to H. Vinek and G. Kinger of the
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