Abstract
Synthesis of a naphtho-tri- t-butyltrisdehydro[16]annulene has been described. Suppression of paratropicity of the 16-membered ring was observed. Comparison of 1H NMR spectrum of the [16]annulene with that of naphtho-tri- t-butylbisdehydro[14]annulene suggests that the trans double bond adjacent to naphthalene in the [16]annulene is twisted out of the mean molecular plane.
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