Zur McLafferty-Umlagerung bei Radikalkationen von Phenylpyridylalkanonen
| dc.contributor.author | Richter, Bernd | |
| dc.contributor.author | Schwarz, Helmut | |
| dc.date.accessioned | 2019-01-04T13:17:20Z | |
| dc.date.available | 2019-01-04T13:17:20Z | |
| dc.date.issued | 1981 | |
| dc.description.abstract | A detailed investigation concerning the genesis of McLafferty rearrangement products from molecular ions of phenyl pyridyl alkanones reveals the following features: 1) The various products are not formed by competitive dissociations of the molecular ion. Most of the relevant fragment ions are generated from the primary McLafferty product of a hydrogen transfer to the ionized carbonyl group (M+·→m/z 163, ion k). The ion k plays a decisive role for the generation of the abundant product ions at m/z 93 (ion g) and m/z 106 (ion s) both of which are formed by further dissociation of k. Details of the mechanisms for the decomposition of k are obtained by investigating [D]-labelled isotopomers, the analysis of low and high resolution data, the application of MIKE and CA spectra. The problem of keto/enol tautomerism between some ions, relevant in this context, is discussed and it is shown that these isomerization processes are not involved. A detailed description is given for the syntheses of various [D]-labelled phenyl pyridyl alkanones. | en |
| dc.identifier.eissn | 1865-7117 | |
| dc.identifier.issn | 0932-0776 | |
| dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/8801 | |
| dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-7930 | |
| dc.language.iso | de | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ | |
| dc.subject.ddc | 540 Chemie und zugeordnete Wissenschaften | de |
| dc.subject.other | mass spectrometry | en |
| dc.subject.other | hydrogen rearrangemen | en |
| dc.subject.other | keto enol tautomerism | en |
| dc.subject.other | metastable ions | en |
| dc.subject.other | collisional activation | en |
| dc.title | Zur McLafferty-Umlagerung bei Radikalkationen von Phenylpyridylalkanonen | de |
| dc.title.translated | On the McLafferty Rearrangement of Ionized Phenyl Pyridyl Alkanones | de |
| dc.type | Article | en |
| dc.type.version | publishedVersion | en |
| dcterms.bibliographicCitation.doi | 10.1515/znb-1981-0716 | |
| dcterms.bibliographicCitation.issue | 7 | |
| dcterms.bibliographicCitation.journaltitle | Zeitschrift für Naturforschung B | de |
| dcterms.bibliographicCitation.originalpublishername | De Gruyter | en |
| dcterms.bibliographicCitation.originalpublisherplace | Berlin | |
| dcterms.bibliographicCitation.pageend | 867 | |
| dcterms.bibliographicCitation.pagestart | 865 | |
| dcterms.bibliographicCitation.volume | 36 | |
| tub.accessrights.dnb | free | |
| tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Chemie::FG Organische Chemie | de |
| tub.affiliation.faculty | Fak. 2 Mathematik und Naturwissenschaften | de |
| tub.affiliation.group | FG Organische Chemie | de |
| tub.affiliation.institute | Inst. Chemie | de |
| tub.publisher.universityorinstitution | Technische Universität Berlin | de |
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