{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,1]],"date-time":"2026-02-01T09:43:12Z","timestamp":1769938992124,"version":"3.49.0"},"reference-count":42,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2020,4,18]],"date-time":"2020-04-18T00:00:00Z","timestamp":1587168000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/00100\/2020"],"award-info":[{"award-number":["UIDB\/00100\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>A new hexa-nuclear Cu(II) complex [Cu3(\u03bc2-1\u03baNO2,2\u03baNO2-L)(\u03bc-Cl)2(Cl)(MeOH)(DMF)2]2 (1), where H4L = N\u20321,N\u20322-bis(2-hydroxybenzylidene)oxalohydrazide, was synthesized and fully characterized by IR spectroscopy, ESI-MS, elemental analysis, and single crystal X-ray diffraction. Complex 1 and the dinuclear oxidovanadium(V) one [{VO(OEt)(EtOH)}2(1\u03baNO2,2\u03baNO2-L)]\u00b72H2O (2) were used as catalyst precursors for the neat oxidation of primary (cinnamyl alcohol) and secondary (1-phenyl ethanol, benzhydrol) benzyl alcohols and of the secondary aliphatic alcohol cyclohexanol, under microwave irradiation using tert-butyl hydroperoxide (TBHP) as oxidant. Oxidations proceed via radical mechanisms. The copper(II) compound 1 exhibited higher catalytic activity than the vanadium(V) complex 2 for all the tested alcohol substrates. The highest conversion was found for 1-phenylethanol, yielding 95.3% of acetophenone in the presence of 1 and in solvent and promoter-free conditions. This new Cu(II) complex was found to exhibit higher activity under milder reaction conditions than the reported aroylhydrazone Cu(II) analogues.<\/jats:p>","DOI":"10.3390\/ijms21082832","type":"journal-article","created":{"date-parts":[[2020,4,21]],"date-time":"2020-04-21T04:49:38Z","timestamp":1587444578000},"page":"2832","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Aroylhydrazone Schiff Base Derived Cu(II) and V(V) Complexes: Efficient Catalysts towards Neat Microwave-Assisted Oxidation of Alcohols"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3349-9154","authenticated-orcid":false,"given":"Manas","family":"Sutradhar","sequence":"first","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural and Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"given":"Tannistha","family":"Roy Barman","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural and Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8323-888X","authenticated-orcid":false,"given":"Armando J. L.","family":"Pombeiro","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural and Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5403-9352","authenticated-orcid":false,"given":"Lu\u00edsa M. D. R. S.","family":"Martins","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural and Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"200","DOI":"10.1016\/j.ccr.2015.01.020","article-title":"Vanadium complexes: Recent progress in oxidation catalysis","volume":"301\u2013302","author":"Sutradhar","year":"2015","journal-title":"Coord. Chem. Rev."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1016\/j.ccr.2014.01.007","article-title":"Coordination chemistry of non-oxido, oxido and dioxidovanadium(IV\/V) complexes with azine fragment ligands","volume":"265","author":"Sutradhar","year":"2014","journal-title":"Coord. Chem. Rev."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"11229","DOI":"10.1021\/ic3017062","article-title":"A hexanuclear mixed-valence oxovanadium (IV,V) complex as a highly efficient alkane oxidation catalyst","volume":"51","author":"Sutradhar","year":"2012","journal-title":"Inorg. 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