The International Conference on Heteroatom Chemistry (ICHAC) is a well-established international forum for the presentation and the discussion of research results obtained from the diverse fields of Heteroatom Chemistry. Previous ICHAC meetings have been held in several countries: 1987 (Kobe, Japan); 1989 (Albany, New York, USA); 1992 (Riccione, Italy); 1995 (Seoul, Korea); 1998 (London, Ontario, Canada); 2001 (Lodz, Poland); 2004 (Shanghai, China); 2007 (Riverside, USA) and 2009 (Oviedo, Spain). The ICHAC series has been organized mostly every three years, but is a biennial event since ICHAC-9 in Spain. We are very proud that ICHAC will return in 2012 to its first host country Japan, in order to celebrate its 10th anniversary. Continuing the successful ICHAC series, ICHAC-10 will cover many areas revolving around the central topic of the Heteroatom Chemistry. Following the long standing tradition of these conferences, ICHAC-10 will be a major scientific event, bringing together organic and inorganic chemists from all over the world, sharing their interests on the different areas of Heteroatom Chemistry. As usual, this conference will serve as a professional forum to disseminate scientific knowledge on all areas relevant to Heteroatom Chemistry. Major themes of ICHAC-10 will be synthesis, structure and reactivity, catalysis, theoretical methods and material aspects. The conference program will consist of plenary and invited lectures, short oral communications and poster presentations complemented by the memorial session lectures for the 10th anniversary of ICHAC. Plenary Lectures Prof. Wolf-Walther du Mont (Technische Universitat Braunschweig, Germany) Lecture title: Nitrogen- and oxygen-bridged bidentate phosphaalkene ligands Prof. Vladimir Gevorgyan (University of Illinois-Chicago, USA) Lecture title: Transition Metal-Catalyzed Synthesis of Heterocycles Proceeding with Migration of Heteroatom Groups. Prof. Kimoon Kim (Pohang University, Korea) Lecture title: Functional supramolecular systems based on cucurbiturils Prof. Shigeru Nagase (Institute for Molecular Science, Japan) Lecture title: Interesting bonds formed by main group elements and transition metals Prof. Philip P. Power (University of California, Davis, USA) Lecture title: The Interaction of Main Group Compounds with Small Molecules Prof. Zuowei Xie (The Chinese University of Hong Kong, Hong Kong) Lecture title: Supercarboranes: Polyhedral Expansion and Contraction Prof. Yohsuke Yamamoto (Hiroshima University, Japan) Lecture title: The Chemistry of Hypervalent Second Row Main Group Element Compounds and Recent Developments. Invited Lectures Prof. Derek P. Gates (University of British Columbia, Canada) Lecture title: Phosphaalkenes in Polymer Science and Catalysis Prof. Annie-Claude Gaumont (Universite de Caen Basse Normandie,ENSICAEN, France) Lecture title: to be announced. Prof. Jose Manuel Gonzalez (University of Oviedo, Spain) Lecture title: Electrophilic Activation of Unsaturated Systems: Applications to Selective Organic Synthesis. Prof. Kei Goto (Tokyo Institute of Technology, Japan) Lecture title: Elucidation of the Reactivity of Biologically-relevant Reactive Sulfur Species by Utilizing Molecular Cavities Prof. Veronique Gouverneur (University of Oxford, United Kingdom) Lecture title: New Approaches to C-F bond Formation Prof. Hee-Yoon Lee (KAIST, Korea) Lecture title: Olefin and Enyne metathesis in the synthesis of heterocycles: total synthesis of dysiherbaine Prof. Mao Minoura (Kitasato University, Japan) Lecture title: Synthesis and Characterization of Reactive Tellurium Compounds for Phase Change Memory Materials Prof. Kilian Muniz (Institut Catala d"Investigacio Quimica(ICIQ), Tarragona, Spain) Lecture title: Oxidative Diamination of Alkenes: Metal Catalysis and Beyond Prof. Tatsuya Nabeshima (University of Tsukuba, Japan) Lecture title: Cooperative Molecular Functions on the Basis of Unique Interactions between Heteroatom and Metal Prof. Akiya Ogawa (Osaka Prefecture University, Japan) Lecture title: Novel Cyclization of o-Alkynylaryl Isocyanides with Highly Selective Introduction of Heteroatom Groups Prof. Satoshi Ogawa (Iwate University, Japan) Lecture title: Synthesis and Redox Properties of Organic-organometallic Hybrid Molecules Containing Thiophene and Ferrocene Fragments Prof. K. Michal Pietrusiewicz (Maria Curie-Sklodowska University, Poland) Lecture title: Phosphine Ligands in Asymmetric Hydrogenation: a Compromise in Ligand-Substrate Interplay Prof. John D. Protasiewicz (Case Western Reserve University, USA) Lecture title: Phosphorus as a Carbon-Copy and as a Photo-Copy: Rise of New Conjugated Materials Featuring Multiply Bonded Phosphorus Prof. Floris Rutjes (Radboud University Nijmegen, The Netherlands) Lecture title: Chemoenzymatic synthesis of bioactive heterocyclic ring systems and natural products Prof. Rainer Streubel (University of Bonn, Germany) Lecture title: Current chemistry of oxaphosphirane complexes. Perspectives in material sciences? Prof. Toshikazu Takata (Tokyo Institute of Technology, Japan) Lecture title: Sulfur-based Dynamic Covalent Bonds Effectively Funcitioning in SupramolecularChemistry Prof. Yong-Gui Zhou (Chinese Academy of Sciences, China) Lecture title: Asymmetric Hydrogenation of Heteroaromatics