?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F21714%2F&rft.title=CHEMISTRY+AND+APPLICATIONS+OF+N-HETEROCYCLIC+CARBENE+BORANES&rft.creator=Pan%2C+Xiangcheng&rft.description=Chemistry+and+applications+of+N-heterocyclic+carbene+borane+complex+are+demonstrated.+Chapter+1+describes+and+introduces+the+background+of+NHC-boranes.+Chapter+2+demonstrates+the+discovery+and+studies+of+thiol-catalyzed+radical+reduction+reactions+of+alkyl+and+aryl+halides+with+NHC-boranes.+The+radical+reductive+cyclization+reactions+with+NHC-boranes+were+also+investigated.+These+reactions+occur+by+a+polarity-reversal+process%2C+where+thiol+is+the+polarity-reversal+catalysis.+Chapter+3+describes+the+development+and+preparative+experiments+of+first+homolytic+substitution+reactions+of+NHC-boryl+radicals+at+divalent+atoms+such+as+sulfur+and+selenium.+The+primary+reaction+products+of+heterocycle+disulfides+undergo+a+1%2C3-boryl+shift+from+S+to+N+to+give+new+class+of+stable+NHC-boranes+with+B-N+heterocycles+bonds.+%0D%0AChapter+4+describes+the+discovery+that+disulfides+(RSSR)%2C+NHC-boryl+mono-+(NHC-BH2SR)+and+bis-sulfides+(NHC-BH(SR)2)+serve+as+both+radical+initiators+and+precatalysts+in+the+radical+reductions+and+reductive+cyclizations+with+NHC-boranes.+These+reactions+are+also+believed+to+occur+by+the+polarity+reversal+catalysis+mechanism.+Chapter+5+describes+the+thiolation+reactions+with+new+synthesized+NHC-boryl+sulfides+and+%E2%80%93amido+complexes.+Chapter+6+introduces+iodine-activated+hydroboration+and+preliminary+results+of+direct+hydroboration.+&rft.date=2014-09-24&rft.type=University+of+Pittsburgh+ETD&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F21714%2F1%2FXPAN_Dissertation_ETD_1.pdf&rft.identifier=++Pan%2C+Xiangcheng++(2014)+CHEMISTRY+AND+APPLICATIONS+OF+N-HETEROCYCLIC+CARBENE+BORANES.++Doctoral+Dissertation%2C+University+of+Pittsburgh.++++(Unpublished)++