Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Quentin N. Porter"'
Publikováno v:
Organic Mass Spectrometry. 26:247-249
Under electron impact, the molecular ions of quinoline N-oxide, carbostyril and 8-hydroxyquinoline lose carbon monoxide giving a fragment ion C8H7N (m/z 117), which was shown by collision-activated dissociation in each case to have the structure of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17722f34f52a0d71823b669dc136e969
https://doi.org/10.1002/oms.1210260412
https://doi.org/10.1002/oms.1210260412
Publikováno v:
Organic Mass Spectrometry. 22:670-676
The use of Freon–113 as a reagent gas in the negative chemical ionization mass spectra of phenolic compounds is reported. The dominant mode of ionization is by chloride attachment producing [M + Cl]− ions. The application of this technique to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70a162b85f6b69036fa4fd3d601d45db
https://doi.org/10.1002/oms.1210221006
https://doi.org/10.1002/oms.1210221006
Autor:
L. A. Shadoff, László Prókai, Gepffrey B. Anderson, Richard G. Gills, Quentin N. Porter, Lajos Bencze, G. W. Dillow, I. K. Gregor, Peter R. Ashton, Malcome E. Rose
Publikováno v:
Organic Mass Spectrometry. 21:381-390
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d681c6b81bd51b0e17760720115cb711
https://doi.org/10.1002/oms.1210210617
https://doi.org/10.1002/oms.1210210617
Autor:
Quentin N. Porter, R. J. Spear
Publikováno v:
Organic Mass Spectrometry. 3:1259-1282
The mass spectra of C-alkylaziridines show that generally β-cleavage is the most important fragmentation, although α-cleavages also occur as do γ-, and δ- and ϵ-cleavages in appropriate examples. A surprising rearrangement of the β-cleavage ion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f18ad9cfaffd47ec0eaab101da7e35a0
https://doi.org/10.1002/oms.1210031006
https://doi.org/10.1002/oms.1210031006
Autor:
Quentin N. Porter, LeRoy H. Klemm
Publikováno v:
The Journal of Organic Chemistry. 46:2184-2186
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08bced6286f826e940dbbb95ccad3804
https://doi.org/10.1021/jo00323a046
https://doi.org/10.1021/jo00323a046
Autor:
Quentin N. Porter, Richard G. Gillis
Publikováno v:
Organic Mass Spectrometry. 20:82-84
The molecular ion of o-methoxy-d3-benzoic acid can undergo three different rearrangements and hydrogen/deuterium exchange between the functional groups. This can result in 14 isomers of the molecular ion before it decomposes giving fragments at m/z 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e470477c7e3a8fd7eac367b7f44c33b
https://doi.org/10.1002/oms.1210200203
https://doi.org/10.1002/oms.1210200203
Autor:
Quentin N. Porter, Amal E. Seif
Publikováno v:
Organic Mass Spectrometry. 4:361-363
The m/e 226 peak in the mass spectrum of 1,1-dimethyl-2,2-dibenzoylhydrazine is formed by loss of C2H4N from the molecular ion, a process involving concerted transfer of two hydrogen atoms from the same methyl group as an accompaniment to NN bond fis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bf4eb9114e69a9c04213e683c98cebf
https://doi.org/10.1002/oms.1210040138
https://doi.org/10.1002/oms.1210040138
Publikováno v:
Organic Mass Spectrometry. 19:583-584
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5be53fff94f35bf5a543ae4af0bec2ae
https://doi.org/10.1002/oms.1210191112
https://doi.org/10.1002/oms.1210191112
Autor:
Paulo R. Schumacher, Vera L. Pardini, Pedro D. Machion, Quentin N. Porter, Hans Viertler, James H. P. Utley
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :973
Anodic oxidation of the title compounds is a convenient and efficient method for deprotection, i.e. for the regeneration of carbonyl compounds.A detailed investigation of the sulphur-containing products confirmed that the initial, 2 F mol–1, produc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::827d4e11ad7ff9f1eeb901dc49bba6e2
https://doi.org/10.1039/p19840000973
https://doi.org/10.1039/p19840000973
Publikováno v:
Organic Mass Spectrometry. 19:199-199
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ca6c0fc5817ae978848bc792bacda8c
https://doi.org/10.1002/oms.1210190413
https://doi.org/10.1002/oms.1210190413