15H-Dibenzo[c.e]benzimidazo[1.2-a]azepine
Abstract
The title compound V has been prepared by the condensation of biphenyl-2,2′-dialdehyde and o-phenylendiamine under a variety of conditions. The reaction is of considerable mechanistic interest as it has been shown to involve an intermolecular hydride shift, although in this system an intramolecular shift appears more likely.
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Tetrahedron