Structure, Synthesis, and Properties of Some Persubstituted 1, 2??Dintroethanes. In Quest of Nitrocyclopropyl??Anion Derivatives

…, P Knochel, S Kwiatkowski, JD Dunitz…

Index: Kai, Yasushi; Knochel,Paul; Kwiatkowski, Stefan; Dunitz, Jack D.; Oth, Jean F. M.; et al. Helvetica Chimica Acta, 1982 , vol. 65, # 1 p. 137 - 161

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Citation Number: 70

Abstract

Abstract Attempts to deprotonate nitrocyclopropane led to solutions which showed strong ESR. signals (Fig. 1) and from which 1-nitro-l′-nitroso-bicyclopropyl (3) and 1, 1′-dinitro- bicyclopropyl (2) were isolated. The activation energy for rotation about the central C, C- bond of 2 is estimated to be about 12 kcal/mol (1 H-NMR. spectra in Fig. 2). In contrast, the oven-chain analogue 2, 3-dimethyl-2, 3-dinitrobutane (1) shows a methyl singlet down to− ...

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