{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T21:48:29Z","timestamp":1792273709288,"version":"4.4.0"},"reference-count":125,"publisher":"Wiley","issue":"26","license":[{"start":{"date-parts":[[2014,5,13]],"date-time":"2014-05-13T00:00:00Z","timestamp":1399939200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2014,6,23]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The bimetallic aluminium(salen) complex [(Al(salen))\n                    <jats:sub>2<\/jats:sub>\n                    O] is known to catalyse the reaction between epoxides and heterocumulenes (carbon dioxide, carbon disulfide and isocyanates) leading to five\u2010membered ring heterocycles. Despite their apparent similarities, these three reactions have very different mechanistic features, and a kinetic study of oxazolidinone synthesis combined with previous kinetic work on cyclic carbonate and cyclic dithiocarbonate synthesis showed that all three reactions follow different rate equations. An NMR study of [Al(salen)]\n                    <jats:sub>2<\/jats:sub>\n                    O and phenylisocyanate provided evidence for an interaction between them, consistent with the rate equation data. A variable\u2010temperature kinetics study on all three reactions showed that cyclic carbonate synthesis had a lower enthalpy of activation and a more negative entropy of activation than the other two heterocycle syntheses. The kinetic study was extended to oxazolidinone synthesis catalysed by the monometallic complex Al(salen)Cl, and this reaction was found to have a much less negative entropy of activation than any reaction catalysed by [Al(salen)]\n                    <jats:sub>2<\/jats:sub>\n                    O, a result that can be explained by the partial dissociation of an oligomeric Al(salen)Cl complex. A mechanistic rationale for all of the results is presented in terms of [Al(salen)]\n                    <jats:sub>2<\/jats:sub>\n                    O being able to function as a Lewis acid and\/or a Lewis base, depending upon the susceptibility of the heterocumulene to reaction with nucleophiles.\n                  <\/jats:p>","DOI":"10.1002\/chem.201400007","type":"journal-article","created":{"date-parts":[[2014,5,13]],"date-time":"2014-05-13T08:47:31Z","timestamp":1399970851000},"page":"8182-8188","source":"Crossref","is-referenced-by-count":40,"title":["Mechanistic Investigation of the Reaction of Epoxides with Heterocumulenes Catalysed by a Bimetallic Aluminium Salen Complex"],"prefix":"10.1002","volume":"20","author":[{"given":"Christopher","family":"Beattie","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"North","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,5,13]]},"reference":[{"key":"e_1_2_6_1_2","unstructured":"\u00a0"},{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja037177o"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja039550y"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja061970a"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja044999s"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja046653n"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja045563f"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200463058"},{"key":"e_1_2_6_8_3","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200463058"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200804213"},{"key":"e_1_2_6_9_3","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200804213"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.tetlet.2009.02.028"},{"key":"e_1_2_6_11_2","unstructured":"\u00a0"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.200700521"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1039\/b900180h"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.200902436"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1002\/ange.200805451"},{"key":"e_1_2_6_15_3","doi-asserted-by":"publisher","DOI":"10.1002\/anie.200805451"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1039\/B918417A"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201000030"},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1039\/c0cy00023j"},{"key":"e_1_2_6_19_2","doi-asserted-by":"publisher","DOI":"10.1002\/cssc.201100239"},{"key":"e_1_2_6_20_2","doi-asserted-by":"publisher","DOI":"10.1039\/C0DT01196G"},{"key":"e_1_2_6_21_2","doi-asserted-by":"publisher","DOI":"10.1039\/c1ee01074c"},{"key":"e_1_2_6_22_2","doi-asserted-by":"publisher","DOI":"10.1002\/cctc.201200117"},{"key":"e_1_2_6_23_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.tetlet.2012.03.090"},{"key":"e_1_2_6_24_2","doi-asserted-by":"publisher","DOI":"10.1021\/jo302317w"},{"key":"e_1_2_6_25_2","unstructured":"\u00a0"},{"key":"e_1_2_6_26_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-0029-1219160"},{"key":"e_1_2_6_27_2","doi-asserted-by":"publisher","DOI":"10.1021\/jo101121h"},{"key":"e_1_2_6_28_2","doi-asserted-by":"publisher","DOI":"10.1021\/cs4001046"},{"key":"e_1_2_6_29_2","unstructured":"For 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