Influence of the heterocyclic side ring on orientation during nitrations of 1, 2??alkylenedioxy??annelated benzenes and their mononitro derivatives
IM Takakis, PM Hadjimihalakis
Index: Journal of Heterocyclic Chemistry, , vol. 28, # 3 p. 625 - 634
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Citation Number: 4
Abstract
... resonance structure [16] (which has a stabilizing effect for Ar-3 substitution in the other heterocycles) less effective. ... nitration of 1, 3 and 4 is strongly in- fluenced by the size of the heterocyclic side ring ... at 4.37, 4.45, 4.47, 4.48 (m, 4H), 7.97 (d, J = 3 Hz, IH), 8.40 (d, J = 3 Hz, ...
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