dc.contributor.author | Kalogirou, Andreas S. | en |
dc.contributor.author | Koutentis, Panayiotis Andreas | en |
dc.creator | Kalogirou, Andreas S. | en |
dc.creator | Koutentis, Panayiotis Andreas | en |
dc.date.accessioned | 2019-11-21T06:19:41Z | |
dc.date.available | 2019-11-21T06:19:41Z | |
dc.date.issued | 2014 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/55624 | |
dc.description.abstract | Readily available 3-bromoisothiazole-5-carbonitriles bearing various C-4 substituents [H, CO2R C[tbnd]N and halogen (Cl or Br)], react with either pyrrolidine or morpholine to give, in most cases, the 3-amino-substituted derivatives in high yields. The reaction of 3-bromoisothiazole-4,5-dicarbonitrile, however, varied with the nucleophilicity of the dialkylamine: pyrrolidine led to cleavage of the isothiazole ring to give 2-[di(pyrrolidin-1-yl)methylene]malononitrile while morpholine led to the expected 3-(morpholin-4-yl)isothiazole-4,5-dicarbonitrile. By comparison, 3-chloroisothiazole-4,5-dicarbonitrile reacted with pyrrolidine to give surprisingly, 3-chloro-5-(pyrrolidin-1-yl)isothiazole-4-carbonitrile as the major product, while with morpholine the major product was the expected 3-(morpholin-4-yl)isothiazole-4,5-dicarbonitrile. The mechanisms of the transformations are discussed, together with rationalization for the formation of side products. Furthermore, the hydrolytic decarboxylation of methyl and ethyl esters of 3-dialkylaminoisothiazoles using both conventional heating and microwave irradiation is reported. © 2014 Elsevier Ltd | en |
dc.source | Tetrahedron | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923586062&doi=10.1016%2fj.tet.2014.06.012&partnerID=40&md5=4af26b662ff7df24ceeaaaa72b0eda6c | |
dc.subject | Nucleophilic aromatic substitution | en |
dc.subject | Heterocycles | en |
dc.subject | Heteroaromatic chemistry | en |
dc.subject | Isothiazoles | en |
dc.subject | Sulfur heterocycles | en |
dc.title | Reactions of selected 3-bromoisothiazole-5-carbonitriles with the secondary dialkylamines pyrrolidine and morpholine | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1016/j.tet.2014.06.012 | |
dc.description.volume | 70 | |
dc.description.issue | 40 | |
dc.description.startingpage | 7092 | |
dc.description.endingpage | 7099 | |
dc.author.faculty | 002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Χημείας / Department of Chemistry | |
dc.type.uhtype | Article | en |
dc.description.notes | <p>Cited By :2</p> | en |
dc.source.abbreviation | Tetrahedron | en |
dc.contributor.orcid | Koutentis, Panayiotis Andreas [0000-0002-4652-7567] | |
dc.contributor.orcid | Kalogirou, Andreas S. [0000-0002-5476-5805] | |
dc.gnosis.orcid | 0000-0002-4652-7567 | |
dc.gnosis.orcid | 0000-0002-5476-5805 | |