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- W2011886483 abstract "Second-order rate coefficients have been measured at several temperatures for the nitration, in 98 and 82 % aqueous sulphuric acid, of the series p-RC6H4·NMe3+ClO4– where R = Me, Et, Pri, or But. The alkyl groups greatly enhance reactivity. Direct experimental comparison shows that p-tolyltrimethylammonium perchlorate is nitrated more readily than phenyltrimethylammonium perchlorate, in the meta-position, by a factor of 3500 in 98 % sulphuric acid and 2600 in 82 % sulphuric acid. Comparison of relative reactivities of the 4-alkylphenyltrimethylammonium ions with those reported for chlorination, bromination, and nitration of alkyl benzenes indicates that even in this highly electron-demanding situation alkyl groups influence nitration by electron release in the inductive order." @default.
- W2011886483 created "2016-06-24" @default.
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- W2011886483 date "1968-01-01" @default.
- W2011886483 modified "2023-09-27" @default.
- W2011886483 title "Substituent effects in the electrophilic substitution of deactivated systems. Part I. The nitration of 4-alkylphenyltrimethylammonium ions" @default.
- W2011886483 doi "https://doi.org/10.1039/j29680000196" @default.
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