Recent Advances in the Area of Pyridodiazinium Systems Containing Bridgehead-Nitrogen Atom

Author(s): Gyorgy Hajos.

Journal Name: Current Organic Chemistry

Volume 10 , Issue 3 , 2006

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Abstract:

A survey is provided on new synthetic pathways to pyrido[1,2-a]pyrimidinium, pyrido[1,2-a]pyrazinium, pyrido[1,2-c]pyrimidinium, and pyrido[1,2-b]pyridazinium systems and their partially saturated derivatives appeared during the recent years. Reaction mechanisms of these ring closure methodologies are also discussed. Some representative further transformations of these ring systems are also summarized. Thus, alkylation of olates and thiolates, ring opening reactions, photochemical transformations and flash vacuum pyrolytic reactions are reviewed.

Keywords: Claisen condensation, Stille-coupling, alkylating reagent, zwitterionic aziniumolates, quinolizinium cation, Bridgehead-nitrogen

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Article Details

VOLUME: 10
ISSUE: 3
Year: 2006
Page: [319 - 332]
Pages: 14
DOI: 10.2174/138527206775473887
Price: $58

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