in the presence and absence of hydrogen acceptor. The Keywords Transfer dehydrogenation of alcohols · catalytic activity of supported metals such as palladium Palladium · Heterogeneous catalysis · Nanoparticles [5, 14, 15], copper [3, 16], gold  and ruthenium [18, 19] for the transfer dehydrogenation of alcohols has been investigated. One of the first reports showing the cata- 1 Introduction lysed transfer dehydrogenation was reported by Hayashi’s group  when they investigated the transfer dehydro- The transformation of alcohols to aldehydes or ketones genation of the secondary allylic alcohol of D-glycals is one of the most essential reactions in organic synthesis reporting that a 1/1 molar mixture of the corresponding [1–3]. For this purpose, stoichiometric oxidants (typically, ketones resulted when using DMF or MeCN as a solvent KMnO and K Cr O ) have been widely used in the fine and Sm(OTf) as a catalyst under Ar atmosphere and at 4 2 2 7 chemicals industry [4, 5]. However, using these oxidants 80 °C, and the yield was 60%. For the purpose of improv- has its limitations due to the toxicity of the produced waste ing the selectivity, Hayashi et al. [5, 21] employed eth- [2, 6, 7]. Thus, there has been
Catalysis Letters – Springer Journals
Published: Jul 20, 2017
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