The reaction of some 7‐substituted cycloheptatrienes with KNH 2 in liquid ammonia is described. In several cases stable carbanions are formed. Their NMR spectra are consistent with a non‐planar pentadienyl‐like structure. A comparison of the 1 H‐NMR spectra of 10 and 11 shows the paratropic character of the cycloheptatrienyl anions.
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Zwaard et al. (1981) studied this question.
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