Intermolecular 1, 3-dipolarcycloaddition reaction of azomethine ylides, generated through
decarboxylation route, with various substituted benzylidene acetophenone (Chalcones) as
dipolarophiles has been investigated. A new class of functionalized spiroheterocycles with
pyrrolidine and pyrrolizine framework has been synthesized with high regioselectivity. The
structures were established by spectroscopic techniques as well as single crystal X-ray analysis.
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