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
Current Organic Chemistry
Title: Recent Advances in the Area of Pyridodiazinium Systems Containing Bridgehead-Nitrogen Atom
Volume: 10 Issue: 3
Author(s): Gyorgy Hajos
Affiliation:
Keywords: Claisen condensation, Stille-coupling, alkylating reagent, zwitterionic aziniumolates, quinolizinium cation, Bridgehead-nitrogen
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.
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Cite this article as:
Hajos Gyorgy, Recent Advances in the Area of Pyridodiazinium Systems Containing Bridgehead-Nitrogen Atom, Current Organic Chemistry 2006; 10 (3) . https://dx.doi.org/10.2174/138527206775473887
DOI https://dx.doi.org/10.2174/138527206775473887 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |
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