ChemInform Abstract: Cyclizations of Substituted Benzylidene-3-alkenylamines: Synthesis of the Tricyclic Core of the Martinellines.
Abstract
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ChemInform Abstract
Lewis acid-mediated cyclization of benzylidene-3-alkenylamines leads to different heterocycles (piperidines, pyrrolidines, dibenzodiazocines, pyridoquinazolines, pyrroloquinazolines) depending on the educt structure. Pyrroloquinazolinones such as (IX) and (XI) can smoothly be converted into pyrroloquinolines like (XVI), which are potent intermediates of martinellines.
