Synthesis of Heteroaromatic Compounds by Alkene and Enyne Metathesis.- The Synthesis of Cyclic Ether-Containing Natural and Non-natural Products by Metathesis Reactions.- Metathetic Synthesis of Common and Medium-Sized Lactones: The State of the Art.- Synthesis of Amine-Containing Heterocycles by Metathesis Reactions: Recent Advances and Opportunities.- Synthesis of Lactams by Metathesis Reactions.- Synthesis of Cyclic Peptides and Peptidomimetics by Metathesis Reactions.- Synthesis of Macrocycles other than Peptides by Metathesis.- Synthesis of P-, S-, Si-, B-, and Se-Heterocycles via Ring-Closing Metathesis.