tailieunhanh - DNA-Templated Organic Synthesis: Natures Strategy for Controlling Chemical ReactivityApplied to Synthetic Molecules**

EPA Region 9 has developed technical guidelines to help ensure that sampling and analyzing for Volatile Organic Compounds (VOCs) in soil and solid matrices are conducted in a manner that achieves accurate, technically defensible data. Region 9’s guidelines, which are intended to apply whenever VOC sampling in and analysis of soil and solid matrices are conducted, are consistent with United States Environmental Protection Agency (USEPA) Office of Solid Waste test methods. These are included as part of a compendium of over 200 documents in “Test Methods for Evaluating Solid Wastes and Physical/Chemical Methods, SW-846” (hereafter “SW-846”), which. | Reviews D. R. Liu and X. Li Synthetic Methods DNA-Templated Organic Synthesis Nature s Strategy for Controlling Chemical Reactivity Applied to Synthetic Molecules Xiaoyu Li and David R. Liu 4848 2004 Wiley-VCH Verlag GmbH Co. KGaA Weinheim DOI Angew. Chem. Int. Ed. 2004 43 4848-4870 DNA-Templated Synthesis Angewandte Chemie In contrast to the approach commonly taken by chemists nature controls chemical reactivity by modulating the effective molarity of highly dilute reactants through macromolecule-templated synthesis. Nature s approach enables complex mixturss in a siggle solution to react with efficiencies and selectivities that cannot be achieved in conventional laboratory synthesis. DNA-templated organic synthesis DTS is emerging as a surprisingly general way to control the reactivity of synthetic molecules by using nature s effective-molarity-based approach. Recent developments have expanded the scope and capabilities of DTS from its origins as a model of prebiotic nucleic acid replication to its current ability to translate DNA sequences into complex smal--molecule and polymer products of multistep organic synthesis. An understanding of fundamental principles underlying DTS has played an important role in these developments. Early applications of DTS include nucleic acid sensing small-molecule discovery and reaction discovery with the help of translation selection and amplification methods previously available only to biological molecules. From the Contents 1. Introduction 4849 2. The Reaction Scope of DNA-Templated Synthesis 4850 3. Expanding the Synthetic Capabilities of DNA-Templated Synthesis 4854 4. DNA-Templated Polymerization 4858 5. Toward a Physical Organic Understanding of DNA-Templated Synthesis 4860 6. Applications of DNA-Templated Synthesis 4863 7. Summary and Outlook 4867 8. Abbreviations 4868 1. Introduction The control of chemical reactivity is a ubiquitous and central challenge of the natural sciences. Chemists typically

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