On the Mechanism of the Cope Rearrangement The rates of the Cope rearrangement of 2,5‐dicyano‐3‐methyl‐hexa‐1, 5‐diene (12), (E)‐ and (Z)‐2, 5‐dicyano‐hepta‐1,5‐diene ((E)‐ and (Z)‐14) as well as of 2, 5‐dimethoxycarbonyl‐3‐methyl‐hexa‐1,5‐diene (13) and (E)‐ and (Z)‐2,5‐dimethoxycarbonyl‐hepta‐1,5‐diene ((E)‐ and (Z)‐15) were measured in decane solution in the temperature range of 50 to 150° (see Tables 5 and 8 to 12). A detailed English summary of this work is given in [1 b].
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Wehrli et al. (1977) studied this question.
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