The Science of Synthesis Editorial Board, together with the volume editors and authors, is constantly reviewing the whole field of synthetic organic chemistry as presented in Science of Synthesis and evaluating significant developments in synthetic methodology. Several annual volumes updating content across all categories ensure that you always have access to state-of-the-art synthetic methodology. This update volume contains: A major update on the synthesis of pyridines, pyridinium salts, and pyridine N-oxides (D. Spitzner) covering new synthetic approaches as well as improvements and extensions to previously reported methods.