Die Pd-katalysierte oxidative Kupplungsreaktion von Methylbenzoesäuremethylester / The Pd-Catalyzed Oxidative Coupling Reaction of Methyl Methylbenzoates
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Media type:
E-Article
Title:
Die Pd-katalysierte oxidative Kupplungsreaktion von Methylbenzoesäuremethylester / The Pd-Catalyzed Oxidative Coupling Reaction of Methyl Methylbenzoates
Contributor:
Shiotani, Akinori
Published:
Walter de Gruyter GmbH, 1994
Published in:
Zeitschrift für Naturforschung B, 49 (1994) 12, Seite 1731-1736
Description:
<jats:p>The Pd-catalyzed oxidative coupling reaction of methyl o-toluate gives, in the presence of a Pd/1,10-phenanthroline(phen)/Cu catalyst, exclusively, the para-linked biphenyldicarboxylates 1, 2, and 3. On the other hand, the meta-linked biphenyldicarboxylates 4 and 5, were predominantly formed in a catalyst system of Pd/2,4-pentanedione(acacH)/Cu, and under similar conditions 6 and 7 were also obtained from the coupling reaction of methyl m-toluate and methyl p-toluate, respectively. A reaction scheme has been proposed.</jats:p>