Ru-Al-Mg-hydrotalcites

Kaneda, K., Yamashita, T., Matsushita, T. and Ebitani, K. (1998). Heterogeneous oxidation of allylic and benzylic alcohols catalyzed by Ru-Al-Mg hydrotalcites in the presence of molecular oxygen. J. Org. Chem. 63, 1750. 

Conjugated aldehydes. Allylic alcohols are converted to enals when treated with either palladium cluster complexes or Ru-Al-Mg hydrotalcites" under molecular oxygen. 

Heterogeneous catalysts such as Ru-Al-Mg-hydrotalcites, Ru-Co-Al-hydrotal-cites, Ru-hydroxyapatite (RuHAP) [73], and RU-AI2O3 [74] are highly efficient catalysts for aerobic oxidation of alcohols [Eq. (35)]. In these oxidation reactions, the key step is postulated as the reaction of Ru-H with O2 to form Ru-OOH, analogous to Pd-OOH, which has been shown to operate in the palladium-catalyzed Wacker-type asymmetric oxidation reaction [75]. 

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