From C–H to C–C Bonds Cross-Dehydrogenative-Coupling 1 0 0 P F 2- 8 0 0 2 6 2 8 7 1 8 7 9 9/ 3 0 1 0. 1 oi: d g | or c. s s.r b u p p:// htt n o 4 1 0 2 9:22. August 11:1n 19 o d e h s bli u P View Online RSC Green Chemistry Editor-in-Chief: Professor James Clark, Department of Chemistry, University of York, UK 1 0 P0 Series Editors: F 2- Professor George A Kraus, Department of Chemistry, Iowa State University, 8 0 0 Ames, Iowa, USA 2 6 2 Professor Dr Ir Andrzej Stankiewicz, Delft University of Technology, 8 7 1 The Netherlands 8 7 9 Professor Peter Siedl, Federal University of Rio de Janeiro, Brazil 9/ 3 Professor Yuan Kou, Peking University, China 0 1 0. 1 oi: Titles in the Series: d g | 1: The Future of Glycerol: New Uses of a Versatile Raw Material c.or 2: Alternative Solvents for Green Chemistry s s.r 3: Eco-Friendly Synthesis of Fine Chemicals b pu 4: Sustainable Solutions for Modern Economies p:// 5: Chemical Reactions and Processes under Flow Conditions htt n 6: Radical Reactions in Aqueous Media o 4 7: Aqueous Microwave Chemistry 1 20 8: The Future of Glycerol: 2nd Edition 9:22. August 9: TBrioagnasspoarntdatiBoinodBiieosfeulels: Novel Pathways for the Production of Ethanol, 11:1n 19 10: Alternatives to Conventional Food Processing d o 11: Green Trends in Insect Control e h 12: A Handbook of Applied Biopolymer Technology: Synthesis, Degradation s bli and Applications u P 13: Challenges in Green Analytical Chemistry 14: Advanced Oil Crop Biorefineries 15: Enantioselective Homogeneous Supported Catalysis 16: Natural Polymers Volume 1: Composites 17: Natural Polymers Volume 2: Nanocomposites 18: Integrated Forest Biorefineries 19: Sustainable Preparation of Metal Nanoparticles: Methods and Applications 20: Alternative Solvents for Green Chemistry: 2nd Edition 21: Natural Product Extraction: Principles and Applications 22: Element Recovery and Sustainability 23: Green Materials for Sustainable Water Remediation and Treatment View Online 24: The Economic Utilisation of Food Co-Products 25:BiomassforSustainableApplications:PollutionRemediationandEnergy 26: From C–H to C–C Bonds: Cross-Dehydrogenative-Coupling 1 0 0 P F 2- 8 0 0 2 6 2 8 7 1 8 7 9 9/ 3 0 1 0. 1 oi: d g | or c. s s.r b u p p:// htt n o 4 1 0 2 9:22. August 11:1n 19 o d e h s bli u P How to obtain future titles on publication: Astandingorderplanisavailableforthisseries.Astandingorderwillbring delivery of each new volume immediately on publication. For further information please contact: BookSalesDepartment,RoyalSocietyofChemistry,ThomasGrahamHouse, Science Park, Milton Road, Cambridge, CB4 0WF, UK Telephone: +44(0)1223 420066,Fax:+44 (0)1223420247 Email:[email protected] Visit our website atwww.rsc.org/books View Online 1 0 0 P F 2- 8 0 0 2 6 2 8 7 1 8 7 9 9/ 3 0 1 0. 1 oi: d g | or c. s s.r b u p p:// htt n o 4 1 0 2 9:22. August 11:1n 19 o d e h s bli u P View Online From C–H to C–C Bonds Cross-Dehydrogenative-Coupling 1 0 0 P F 2- 8 0 0 Edited by 2 6 2 8 17 Chao-Jun Li 8 7 9 McGill University, Montreal, Canada 9/ 03 Email: [email protected] 1 0. 1 oi: d g | or c. s s.r b u p p:// htt n o 4 1 0 2 9:22. August 11:1n 19 o d e h s bli u P View Online 1 0 0 P F 2- 8 0 0 2 6 2 8 7 1 8 7 9 9/ 3 0 1 0. 1 oi: d g | or c. s s.r b u p http:// RSCGreenChemistryNo.26 n o 4 PrintISBN:978-1-84973-797-5 1 20 PDFeISBN:978-1-78262-008-2 9:22. August ISSN:1757-7039 11:1n 19 AcataloguerecordforthisbookisavailablefromtheBritishLibrary d o rTheRoyalSocietyofChemistry2015 e h s bli Allrightsreserved u P Apartfromfairdealingforthepurposesofresearchfornon-commercialpurposesorfor privatestudy,criticismorreview,aspermittedundertheCopyright,DesignsandPatents Act1988andtheCopyrightandRelatedRightsRegulations2003,thispublicationmaynot bereproduced,storedortransmitted,inanyformorbyanymeans,withouttheprior permissioninwritingofTheRoyalSocietyofChemistryorthecopyrightowner,orinthe caseofreproductioninaccordancewiththetermsoflicencesissuedbytheCopyright LicensingAgencyintheUK,orinaccordancewiththetermsofthelicencesissuedbythe appropriateReproductionRightsOrganizationoutsidetheUK.Enquiriesconcerning reproductionoutsidethetermsstatedhereshouldbesenttoTheRoyalSocietyof Chemistryattheaddressprintedonthispage. TheRSCisnotresponsibleforindividualopinionsexpressedinthiswork. PublishedbyTheRoyalSocietyofChemistry, ThomasGrahamHouse,SciencePark,MiltonRoad, CambridgeCB40WF,UK RegisteredCharityNumber207890 Forfurtherinformationseeourwebsiteatwww.rsc.org 7 0 0 P F 2- Preface 8 0 0 2 6 2 8 7 1 8 7 9 9/ 3 0 1 10. Theabilitytoachieveanygoalsinoursocietyislargelydependentupon,and oi: limited by, the state-of-the-art tools available. While the speed and ease of d g | theconstructionoflargeobjects,suchasbuildings,arerapidlyenhancedby or c. the creation of various heavy machines, established fundamental chemical s s.r reactions, incombinationwith our creativeand intelligentdesigning skills, b u p ultimately determine the synthesis of chemical products. http:// The development of novel chemical reactivities and reaction conditions n that can improve resource efficiency, energy efficiency, product selectivity, o 4 operational simplicity, as well as environmental health and safety, repre- 1 0 2 sents both an ideology and an aspiration for generations of synthetic 9:23. August cFhrieemdriiscths,Wmo¨ohrelesroitnha1n82e8v,eroragtatnhiicstcihmeem.iEsvtreyrshianscebethcoemsyentihnecsreisasoifnugrlyeaimby- 11:1n 19 portant in modern society. The invention of organic reactions over the past o d two centuries has allowed us to create synthetic organic compounds and e sh materials that have now touched essentially every corner of our life: from ubli cosmetics to fashion, from pharmaceuticals to agrochemicals, from trans- P portation to the interior of skyscrapers, and from electronics to genetic modification. However, the archetypical requirements of standard classical chemical transformations are the functional groups, which provide the platformforchemicalconversionsthathaveledtothesynthesisofmillions of both naturally existing and non-naturally existing molecules in just less thantwocenturies,onlyablinkingmomentinhumanhistory.Inspiteofthe great successes, there are still various shortcomings: the pre-functionalized startingmaterialsneedtobesynthesizedinseparatesteps,andtheamount of waste associated with solvent usage, purification and isolation man- euvers, as well as the required manpower to perform a synthesis increases exponentially with the number of synthetic steps. With recent concerns re- garding theadverseeffectsof chemicalproductionprocesses,aswell asthe RSCGreenChemistryNo.26 FromC–HtoC–CBonds:Cross-Dehydrogenative-Coupling EditedbyChao-JunLi rTheRoyalSocietyofChemistry2015 PublishedbytheRoyalSocietyofChemistry,www.rsc.org vii View Online viii Preface emphasis on green chemistry and chemical sustainability, various frontiers ofsynthetic chemistryhavebeen explored.Amongthem,theconceptofthe cross-dehydrogenative-coupling(CDC)reactionwasformulatedin2003.The directgenerationofaC–CbondfromtwodifferentC–Hbondsconstitutesan idealthathasgame-changingpotentialinsyntheticdesign.Thesubjecthas 7 0 0 become a very rapidly expanding field. This edited book will cover some of P F 2- the key developments in this area. 8 0 0 2 6 Chao-Jun Li 2 8 7 Montreal, Canada 1 8 7 9 9/ 3 0 1 0. 1 oi: d g | or c. s s.r b u p p:// htt n o 4 1 0 2 9:23. August 11:1n 19 o d e h s bli u P 9 0 0 P F 2- Contents 8 0 0 2 6 2 8 7 1 8 7 9 9/ 3 Chapter 1 The Evolution of the Concept of 0 1 0. Cross-Dehydrogenative-Coupling Reactions 1 1 oi: Simon A. Girard, Thomas Knauber and Chao-Jun Li d g | or 1.1 Introduction 1 c. s.rs 1.2 CDCReactionsInvolvingsp3C–HBondsandspC–H b pu Bonds 4 p:// 1.2.1 Reaction of sp3 C–H Bonds Adjacent to n htt Nitrogen 4 4 o 1.2.2 Asymmetric Reaction of sp3 C–H Bonds 1 20 Adjacent to Nitrogen 6 9:26. August 1.2.3 ROexaygcteinon of sp3 C–H Bonds Adjacent to 6 11:1n 19 1.2.4 Reaction of Benzylic sp3 C–H Bonds 7 o 1.3 CDC Reactions Involving sp3 C–H Bonds and d he sp2 C–H Bonds 7 s ubli 1.3.1 Reaction of sp3 C–H Bonds Adjacent to P Nitrogen 7 1.3.2 Reaction of sp3 C–H Bonds Adjacent to Oxygen 9 1.3.3 Reaction of Benzylic and Allylic sp3 C–H Bonds 9 1.3.4 Reaction of a-sp3 C–H Bonds of Carbonyl Groups 10 1.3.5 Reaction of Alkane sp3 C–H Bonds 11 1.4 CDC Reactions Involving sp3 C–H Bonds and sp3 C–H Bonds 15 1.4.1 Reaction of sp3 C–H Bonds Adjacent to Nitrogen 15 RSCGreenChemistryNo.26 FromC–HtoC–CBonds:Cross-Dehydrogenative-Coupling EditedbyChao-JunLi rTheRoyalSocietyofChemistry2015 PublishedbytheRoyalSocietyofChemistry,www.rsc.org ix View Online x Contents 1.4.2 Reaction of sp3 C–H Bonds Adjacent to Oxygen 17 1.4.3 Reactions with Allylic and Benzylic C–H Bonds 18 1.4.4 Reactions with Alkanes 19 9 00 1.5 CDC Reactions Involving sp2 C–H P F 2- Bonds 21 8 00 1.6 Conclusion and Outlook 27 2 26 Acknowledgements 27 8 17 References 27 8 7 9 9/ 3 0 1 Chapter 2 Dehydrogenative Heck-type Reactions: 0. oi:1 The Fujiwara–Moritani Reaction 33 g | d Tsugio Kitamura and Yuzo Fujiwara or c. s 2.1 Introduction 33 s.r ub 2.2 Stoichiometric CDC Reactions 34 p p:// 2.3 Catalytic CDC Reactions 40 htt 2.4 Ligand-Directing CDC Reactions 46 n o 2.5 Conclusions and Outlook 51 4 01 References 52 2 9:26. August 11:1n 19 Chapter 3 CReoapcpteior-nCsatalyzed Cross-Dehydrogenative-Coupling 55 o d Xiaojian Zheng and Zhiping Li e h s bli u 3.1 Introduction 55 P 3.2 Copper-Catalyzed CDC Reactions Involving C–H Bonds Adjacent to Nitrogen 56 3.2.1 sp3 C–H Bonds and sp C–H Bonds 56 3.2.2 sp3 C–H Bonds and sp2 C–H Bonds 57 3.2.3 sp3 C–H Bonds 59 3.3 Copper-Catalyzed CDC Reactions Involving C–H Bonds Adjacent to Oxygen 60 3.4 Copper-Catalyzed CDC Reactions Involving Other C–H Bonds 61 3.4.1 Allylic C–H Bonds 61 3.4.2 Benzylic C–H Bonds 61 3.4.3 C–N Bond Formation 62 3.4.4 C–P Bonds 62 3.5 Asymmetric CDC Reactions 63 3.6 Summary and Outlook 64 References 65