The title 2-azabicyclo[2.2.2]octa-2,5-diene derivative, C14H18N4O, crystallized out with two independent molecules with similar conformations in the asymmetric unit. In each molecule, the three six-membered rings adopt boat conformations. The molecules exist in the enamine form. In the crystal, molecules are linked by N—H⋯O and N—H⋯N hydrogen bonds into a two-dimensional network parallel to the ab plane.

The crystallized 2-azabicyclo[2.2.2]octa-2,5-diene derivative shows similar conformation to the enamine form and is linked by hydrogen bonds into a two-dimensional network parallel to the ab plane.

Paper

5-Amino-3-ethoxy-1,8,8-trimethyl-2-azabicyclo[2.2.2]octa-2,5-diene-4,6-dicarbonitrile

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