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. Four annual volumes updating content across all categories ensure that you always have access to state-of-the-art synthetic methodology. Content of this volume: Five#Five-Fused Hetarenes with One Heteroatom in Each Ring; One Oxygen and One Nitrogen or Phosphorus Atom; One Sulfur, Selenium, or Tellurium Atom and One Nitrogen or Phosphorus Atom; Carbon Dioxide, Carbonyl Sulfide, Carbon Disulfide, Isocyanates, Isothiocyanates, Carbodiimides, and Their Selenium, Tellurium, and Phosphorus Analogues; 1,1-Dihaloalk-1-enes; Bis(heteroatom-functionalized) Acetylenes; 1-Haloalk-1-ynes and Alk-1-yn-1-ols; Diazo Compounds; Alkaneselenolates of Group 3#12 Metals; Cyclic Alkaneselenolates of Group 3#12 Metals; Alkanetellurolates of Group 3#12 Metals; Cyclic Alkanetellurolates of Group 3#12 Metals.