SEARCH Articles Figures Tables Amination of Aromatic Heterocyclic Lactam Systems Appendix Glance Index to Typical Pyrazine Derivatives Available from Other Heterocyclic Systems Aromatic heterocyclic imide system Central nervous system , heterocyclic Claisen rearrangements in nitrogen heterocyclic systems Claisen rearrangements nitrogen heterocyclic systems Cyclic oxime ethers, as heterocyclic systems Degenerate Ring Transformations of Heterocyclic Systems Doubly charged heterocyclic systems Electrolytic Reactions of Heterocyclic Systems Electrolytic formation of heterocyclic systems Formation of Bicyclic Heterocyclic Ring Systems Four-membered ring systems silicon and phosphorus heterocycles From Other Heterocyclic Systems Fused heterocycles systems Fused heterocyclic systems Heterocyclic Aromatic Systems Heterocyclic Synthesis and Novel Ring Systems Heterocyclic Systems with 1,2-Heteroatoms Heterocyclic Systems with Heteroatoms of the Same Name Heterocyclic aromatic systems, lithiation Heterocyclic compounds ring systems Heterocyclic inorganic ring systems Heterocyclic ring systems Heterocyclic sulfur systems Heterocyclic synthesis mesoionic ring systems Heterocyclic systems four-membered Heterocyclic systems substitution Heterocyclic systems, nomenclature Heterocyclic systems, pyridine-containing Heterocyclic systems, substitutions with Important Heterocyclic Systems In nitrogen heterocyclic systems Macrocycles heterocyclic systems Metallation heterocyclic systems Multicomponent reaction heterocyclic systems New heterocyclic ring system Nitrogen heterocyclic systems, Claisen Nitrogen-containing heterocyclic systems Nucleophilic aromatic heterocyclic systems Nucleophilic aromatic of heterocyclic systems Nucleophilic aromatic substitution heterocyclic systems Of peri-annellated heterocyclic systems Other Heterocyclic Systems Oxidative cleavage of fused heterocyclic ring systems PRIMARY SYNTHESES FROM OTHER HETEROCYCLIC SYSTEMS Peri-annellated heterocyclic systems Peri-annellated heterocyclic systems, synthesis Polycyclic systems including two heterocycles Proton carbon from heterocyclic systems Pterin heterocyclic ring system Rearrangements in heterocyclic systems Ring systems heterocyclic synthesis SYNTHESIS OF HETEROCYCLIC SYSTEMS BY CYCLOADDITION REACTIONS Saturated heterocyclic ring systems, proton Six-Member Heterocyclic Systems Six-membered heterocycles systems Small heterocyclic systems, spectra Specialist nomenclature for heterocyclic systems Suffixes for Specialist Nomenclature of Heterocyclic Systems Sulfur-containing heterocyclic systems Synthesis of Bridged Heterocyclic Systems Synthesis of Quinoxalines from Heterocyclic Systems Synthesis of peri-annellated heterocyclic systems Tautomerism in Heterocyclic Systems Three-membered Heterocyclic Systems Transformations into Other Heterocyclic Systems Transmission of Substituent Effects through Heterocyclic Systems Typical Examples of Heterocyclic System Synthesis With heterocyclic ring systems