Heterocyclic Spiro-Compounds from Tandem Cascade Reaction of Alkyl Azides and Methyl Vinyl Ketone
Resource
Journal of the Chinese Chemical Society 50 (3A): 445-448
Journal
Journal of the Chinese Chemical Society
Pages
445-448
Date Issued
2003
Date
2003
Author(s)
楊嘉喜
李蓮童
王瑜
Abstract
Abstract Tandem cascade reaction of one molecule of alkyl azide and four molecules of methyl vinyl ketone gives a heterocyclic compound having an 1,4‐diazepine fused to a pyrazoline and spiro‐linked to a dihydropyran. The tandem cascade reaction is composed of an intermolecular [3+2] dipolar cycloaddition to give a triazoline, an isomerization to a diazo compound, another intermolecular [3+2] dipolar cycloaddition to give a pyrazoline, a Michael addition, dehydration, and a [4+2] cycloaddition.
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Type
journal article
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