Structural assignment by NMR spectroscopy: Restricted rotation about aryl C-N bond and configurations of Diels-Alder adducts.

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概要

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• Restricted rotation and non-planar conformations about the aryl C–N bond in ortho substituted arylimides have been studied in order to assign the <I>endo</I> and <I>exo</I> configurations of Diels-Alder adducts, employing the adducts of maleic anhydride with naphthalene and cyclopentadiene as model compounds. The adducts are readily transformed into their <I>o</I>-tolylimide derivatives and the <I>N</I>-<I>o</I>-tolyl probes satisfactorily into the magnetic environment of the cage moiety. In 1-naphthylimide derivatives, the <I>naphthyl</I> group causes splitting in the cage-proton resonances and is found to be more diagnostic for structural assignment.

• 公益社団法人 日本化学会の論文

著者

• Verma Shiva

  Department of Chemistry, Banaras Hindu University

• Singh Nripendra

  Department of Chemistry, Banaras Hindu University

関連論文

• Structural assignment by NMR analyses of N-(diacylamino)imide derivatives. Diels-Alder adducts of 2,3-dimethylnaphthalene and 6,6-diphenylfulvene with maleic anhydride.
• Some Physico-Chemical Studies on Molecular Semiconductors Based on Charge Transfer Complexes of Substituted Phenothiazines with Iodine.
• Structural assignment by NMR spectroscopy: Restricted rotation about aryl C-N bond and configurations of Diels-Alder adducts.

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