{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T10:05:43Z","timestamp":1761473143638,"version":"build-2065373602"},"reference-count":39,"publisher":"Wiley","issue":"28","license":[{"start":{"date-parts":[[2018,7,30]],"date-time":"2018-07-30T00:00:00Z","timestamp":1532908800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["ChemistrySelect"],"published-print":{"date-parts":[[2018,7,31]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Reaction of\n                    <jats:italic>N<\/jats:italic>\n                    \u2010acetylpyrazine\u20102\u2010carbohydrazide (H\n                    <jats:sub>2<\/jats:sub>\n                    L) with anhydrous Fe(II) or Fe(III) chloride in CH\n                    <jats:sub>3<\/jats:sub>\n                    CN or in MeOH leads to the mononuclear [Fe(\n                    <jats:italic>\u03ba<\/jats:italic>\n                    NN'O\u2010HL)Cl\n                    <jats:sub>2<\/jats:sub>\n                    ] (\n                    <jats:bold>1<\/jats:bold>\n                    ) or binuclear [Fe(\n                    <jats:italic>\u03ba<\/jats:italic>\n                    NN'O\u2010HL)Cl(\n                    <jats:italic>\u03bc<\/jats:italic>\n                    \u2010OMe)]\n                    <jats:sub>2<\/jats:sub>\n                    (\n                    <jats:bold>2<\/jats:bold>\n                    ) Fe(III) complex, respectively. These complexes are characterized by elemental analysis, ESI\u2010MS, IR spectroscopy, single\u2010crystal X\u2010ray crystallography, electrochemical techniques and DFT calculations. The theoretical calculations indicate that the three single\u2010electron sequential reductions of\n                    <jats:bold>1<\/jats:bold>\n                    are centred at the metal, at the pyrazine group and at both, respectively. The catalytic activity of\n                    <jats:bold>1<\/jats:bold>\n                    and\n                    <jats:bold>2<\/jats:bold>\n                    was screened towards Friedel\u2010Crafts benzoylation and acylation of\n                    <jats:italic>m<\/jats:italic>\n                    \u2010xylene. The effects of reaction parameters, such as catalyst amount, reaction time and temperature, were studied and, under optimal conditions, 96% yield of 2,4\u2010dimethylbenzophenone and 20% yield of 2,4\u2010dimethylacetophenone were obtained, respectively. Complex\n                    <jats:bold>1<\/jats:bold>\n                    exhibited the highest activity in both reactions. The structural and electrochemical properties were supported by theoretical calculations and the importance of the Lewis acid character of the catalyst in the promotion of this catalytic reaction is discussed.\n                  <\/jats:p>","DOI":"10.1002\/slct.201801656","type":"journal-article","created":{"date-parts":[[2018,7,30]],"date-time":"2018-07-30T05:08:51Z","timestamp":1532927331000},"page":"8349-8355","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Efficient Solvent\u2010Free Friedel\u2010Crafts Benzoylation and Acylation of\n                    <i>m<\/i>\n                    \u2010Xylene Catalyzed by\n                    <i>N<\/i>\n                    \u2010Acetylpyrazine\u20102\u2010carbohydrazide\u2010Fe(III)\u2010chloro Complexes"],"prefix":"10.1002","volume":"3","author":[{"given":"Tannistha Roy","family":"Barman","sequence":"first","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural Instituto Superior T\u00e9cnico Universidade de Lisboa, Av. Rovisco Pais  1049-001 Lisboa Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3349-9154","authenticated-orcid":false,"given":"Manas","family":"Sutradhar","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural Instituto Superior T\u00e9cnico Universidade de Lisboa, Av. Rovisco Pais  1049-001 Lisboa Portugal"}]},{"given":"Elisabete C. B. A.","family":"Alegria","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural Instituto Superior T\u00e9cnico Universidade de Lisboa, Av. Rovisco Pais  1049-001 Lisboa Portugal"},{"name":"Chemical Engineering Departament ISEL-Instituto Superior de Engenharia de Lisboa Instituto Polit\u00e9cnico de Lisboa  1959-007 Lisboa Portugal"}]},{"given":"M. F\u00e1tima C.","family":"Guedes\u2005da\u2005Silva","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural Instituto Superior T\u00e9cnico Universidade de Lisboa, Av. Rovisco Pais  1049-001 Lisboa Portugal"}]},{"given":"Maxim L.","family":"Kuznetsov","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural Instituto Superior T\u00e9cnico Universidade de Lisboa, Av. Rovisco Pais  1049-001 Lisboa Portugal"}]},{"given":"Armando J. L.","family":"Pombeiro","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural Instituto Superior T\u00e9cnico Universidade de Lisboa, Av. Rovisco Pais  1049-001 Lisboa Portugal"}]}],"member":"311","published-online":{"date-parts":[[2018,7,30]]},"reference":[{"unstructured":"G. Sartori R. 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