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The investigated mesoporous spinels possess high activity as solid\u2010base catalysts. Magnesium aluminate exhibits superior activity compared to zinc and cobalt\u2010based aluminates, reaching full conversion and up to 81\u2009% yield of the 1:1 aldol product. The high activity can be correlated to a higher concentration of basic surface sites on magnesium aluminate. Applying continuous regeneration, the catalysts can be recycled without loss of activity. Focusing on the subsequent hydrogenation of aldol condensation products, Cu\/MgAl<jats:sub>2<\/jats:sub>O<jats:sub>4<\/jats:sub> allows a selective hydrogenation and C\uf8ffO bond cleavage, delivering 3\u2010hydroxybutyl\u20105\u2010methylfuran as the main product with up to 84\u2009% selectivity avoiding ring saturation. Analysis of the hydrogenation activity reveals that the reaction proceeds in the following order: C\uf8feC&gt;C\uf8feO&gt;C\uf8ffO\u2005cleavage&gt;ring hydrogenation. Comparable activity and selectivity can be also achieved utilizing 2\u2010propanol as solvent in the transfer hydrogenation, providing the possibility for partial recycling of acetone and optimization of the hydrogen management.<\/jats:p>","DOI":"10.1002\/cssc.201300414","type":"journal-article","created":{"date-parts":[[2013,9,12]],"date-time":"2013-09-12T13:34:42Z","timestamp":1378992882000},"page":"2103-2110","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":74,"title":["Cu\/MgAl<sub>2<\/sub>O<sub>4<\/sub> as Bifunctional Catalyst for Aldol Condensation of 5\u2010Hydroxymethylfurfural and Selective Transfer Hydrogenation"],"prefix":"10.1002","volume":"6","author":[{"given":"Kristina","family":"Pupovac","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Regina","family":"Palkovits","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2013,9,12]]},"reference":[{"key":"e_1_2_6_1_2","doi-asserted-by":"publisher","DOI":"10.1002\/anie.196304051"},{"key":"e_1_2_6_1_3","doi-asserted-by":"publisher","DOI":"10.1002\/jctb.5000593902"},{"key":"e_1_2_6_2_2","unstructured":"\u00a0"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr050989d"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr300182k"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/0144-4565(87)90072-2"},{"key":"e_1_2_6_5_3","doi-asserted-by":"publisher","DOI":"10.1007\/s10562-012-0858-5"},{"key":"e_1_2_6_6_2","first-page":"938","volume-title":"Advanced Organic Chemistry, 4th\u2005ed.","author":"March J.","year":"1992"},{"key":"e_1_2_6_6_3","unstructured":"A.Ueda Y.Fujita H.Emoto A.Adachi(Mitsubishi Chem. 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