Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Werner Städeli"'
Autor:
W. von Philipsborn, Werner Städeli
Publikováno v:
Organic Magnetic Resonance. 15:106-109
15N chemical shifts of 32 substituted pyridines and 19 substituted pyrimidines, together with additional data from the literature, are used to evalute substituent increments, Ai and Aik, in the respective series. Differential chemical shifts, Δδ(N)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc66008a8c0c6e0c8b55de5aa6b85af9
https://doi.org/10.1002/mrc.1270150124
https://doi.org/10.1002/mrc.1270150124
Publikováno v:
Helvetica Chimica Acta. 63:504-522
15N-NMR. spectra of mono- and diaminopyridines, and mono-, di- and triaminopyrimidines including trimethoprim and other dihydrofolate reductase inhibitors have been studied in neutral and acidic media. Complete chemical shift assignments are given. R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a57f09b16a490090cae102914412a994
https://doi.org/10.1002/hlca.19800630223
https://doi.org/10.1002/hlca.19800630223
Publikováno v:
Helvetica Chimica Acta. 60:948-958
The structures of cyclic polyketones, their hydrates and reduction products were studied in different solvents by 13C-NMR. spectroscopy. In dimethylsulfoxide solution rhodizonic acid (1), croconic acid (2) and squaric acid (3) exhibit signal averagin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c10e10b335bf5b5491ca7593e9008a3a
https://doi.org/10.1002/hlca.19770600325
https://doi.org/10.1002/hlca.19770600325
Publikováno v:
Organic Magnetic Resonance. 16:170-172
Application of a modified INEPT pulse sequence to obtain fully proton-coupled and selectively decoupled 15N NMR spectra of pyridines and pyrimidines with natural isotope abundance is demonstrated. The spectra are analysed for 2J, 3J and 4J(NH) coupli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::872d9d5ff4e1a3cd96b05111f3d013c6
https://doi.org/10.1002/mrc.1270160223
https://doi.org/10.1002/mrc.1270160223