Developments in the Synthesis of 1,2-Dihydropyridines

This review provides a comprehensive compilation of available literature concerning the synthesis of 1,2-dihydropyridines. The most important recent developments and concepts re­lated to this topic are emphasised. 1 Introduction 2 Synthesis of 1,2-Dihydropyridines 2.1 Condensation Reactions 2.2 Reduction of Pyridines and Pyridinium Salts 2.3 Nucleophilic Addition to Pyridines and Pyridinium Salts 2.4 Pericyclic Reactions 2.5 Other Methods 3 Conclusions