Zobrazeno 1 - 10 of 11 pro vyhledávání: '"J. R. Penton"'
1
The Rôle of Solvent Participation in Electrophilic Aromatic Substitution: Rates of a diazo coupling reaction in water and in aprotic polar solvents. 24th Communication on diazo coupling reactions
Autor: H. Zollinger, J. R. Penton
Publikováno v: Helvetica Chimica Acta. 54:573-578
The rates of the diazo coupling reaction of 4-toluenediazonium salts with N, N-dimethylaniline in tetramethylene sulfone, acetonitrile, water, and nitromethane at 30°C are the same within a factor of 5. No significant influence of ‘gegenions’ (H
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b556787c61d0575490bbce2b2e0fb8a9
https://doi.org/10.1002/hlca.19710540217
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2
Ionization of Hydrogen, Hydrogen Deuteride, and Deuterium on Impact of Metastable Helium Atoms
Autor: E. E. Muschlitz, J. R. Penton
Publikováno v: The Journal of Chemical Physics. 49:5083-5088
Relative cross sections for the ionization of H2, HD, and D2 have been measured using a thermal‐energy beam of 2 3S1 and 2 1S0 helium atoms. The cross sections for the production of H2+, HD+, and D2+ increase in this order. The ions are observed to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b03c1e5020bfcf3381b06e563b91b0e2
https://doi.org/10.1063/1.1670002
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8
Determination of Serum or Plasma Glucose on the 'AutoAnalyzer II' by Use of the Hexokinase Reaction
Autor: J. R. Penton, G. M. Widdowson
Publikováno v: Clinical Chemistry. 18:299-300
An automated method is described for determination of glucose in serum or plasma by use of the hexokinase reaction. The method has good precision and the results correlate well with those from a manual method in which the same reaction is used.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b935ef8863ebc26541e43f2834cfa8be
https://doi.org/10.1093/clinchem/18.3.299
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9
Heteroaromatic reactivity. Part V. A quantitative study of the products of nitration of the quinolinium ion in sulphuric acid
Autor: D. H. G. Crout, J. R. Penton, K. Schofield
Publikováno v: Journal of the Chemical Society B: Physical Organic. :1254
Nitration of the quinolinium ion in 80·05% sulphuric acid at 25 °C gave 3-(0·0013%), 5-(50·1%), 6-(1·61%), 7-(0·014%), and 8-nitroquinoline (42·3%). The corresponding partial rate factors were calculated to be 4·57 × 10–12, 1·74 × 10–7
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3868ca3bfe378aa1e863c8b0f8b04913
https://doi.org/10.1039/j29710001254
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10
Heteroaromatic reactivity. Part VI. Kinetics and products of the nitration of 4-hydroxyquinoline, 1-methyl-4-quinolone, 4-methoxyquinoline, and 4-hydroxycinnoline in sulphuric acid
Autor: R. B. Moodie, J. R. Penton, K. Schofield
Publikováno v: Journal of the Chemical Society B: Physical Organic. :1493
The rates and products of nitration of the title compounds have been measured. The quinoline derivatives react as their conjugate acids, but with 4-hydroxycinnoline the free base may be involved to some extent. Surprisingly large proportions of 1-met
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b59259747e481d79709ee1e951c81ed
https://doi.org/10.1039/j29710001493
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