13C-NMR spectra of benzenesulphonyl derivatives
1980 ◽
Vol 45
(5)
◽
pp. 1575-1580
◽
Keyword(s):
13C-NMR chemical shifts and 1J(CH) and 3J(CH) coupling constants have been determined for a series of C6H5SO2X derivatives (X = Cl, C6H5, Ona, OCH3, OC2H5, OC6H5, NH2, NHNH2, N(CH2)5, NHC6H5) in hexadeuteriodimethyl sulphoxide solutions, and the substituent shift values of benzene nucleus have been calculated for the individual SO2X groups,. These groups, carrying partial positive charge at the sulphur atom, have electron-acceptor effects on the benzene nucleus, and increasing electron-donor character of the substituent X is connected with a proportional increase of mesomeric acceptor influence on the benzene nucleus and with increase in absolute values of 1J(CH).
1980 ◽
Vol 45
(10)
◽
pp. 2766-2771
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Keyword(s):
1987 ◽
Vol 42
(1)
◽
pp. 77-83
◽
Keyword(s):
1979 ◽
Vol 57
(23)
◽
pp. 3168-3170
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Keyword(s):