Photoredox functionalization of C–H bonds adjacent to a nitrogen atom

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1、ViewOnline/JournalHomepageChemSocRevDynamicArticleLinksCitethis:DOI:10.1039/c2cs35203fwww.rsc.org/csrTUTORIALREVIEWPhotoredoxfunctionalizationofC–HbondsadjacenttoanitrogenatomLeiShiandWujiongXia*Received6thJune2012DOI:10.1039/c2cs35203fThefunctionalizationofC–Hbondsandthevisib

2、lelightphotoredoxcatalysisrepresenttwoprominentchallengesinorganicchemistry.Inthisregard,thecombinationofvisible-lightcatalysisandC–Hbondfunctionalizationadjacenttoatertiaryaminehasbeensuccessfullydevelopedinthepastthreeyears.Inthistutorialreview,weaimtogiveabriefoverviewofthi

3、sissueandstatethemainresultsobtainedinthereactions.3Introductionattentioninorganicchemistrysincetheearly20thcentury.However,theinabilityofmostorganicmoleculestoabsorbOrganicphotochemicalreactionsplayanincreasinglyimportantvisiblelighthaslimitedthenumberofapplicationsoforganicr

4、oleinthecontextofgreenchemistryandorganicsynthesisphotochemicalreactions(Fig.1).Furthermore,thestudiesofbecauselighthasalwaysbeenregardedasaninexpensive,photo-initiatedorganicreactionsbyexploitingUVlightsuffernonpolluting,abundant,andendlesslyrenewablereagentforfromthefollowing

5、disadvantages:(1)specializedUVreactors1chemiststoperformreactions.Inparticular,incomparisonareofhighcostandimposeserioussizeconstraints(xenonwithconventionalthermalreactions,whichusuallyonlyshowlampsormercurylampswereusedaslightsources);(2)sidesingletstates,photochemicalreacti

6、onscanincludesingletandproductsareformedduetolightabsorptionbythephoto-tripletstates.Asaresult,manyusefulandfascinatingcom-productsandotherchromophoresofreactants;(3)UVwave-poundsmightbeobtainedfromUVorvisiblelightirradiationlengthsfororganicphotochemistryarenotabundantinthe2w

7、hicharenotaccessibleunderthermalconditions.Inthissolarspectrum;and(4)theyarenotfeasibleonalargescaleway,organicphotochemicalreactionshavebecomeverypopularandhavelittleimpactonindustry.InviewofthefactthattheDownloadedbyUniversiteduQuebecaMontrealon10September2012andusefultoolsf

8、ororganicsynthesisandattractedconsiderableforemostscientificch