Thermal (Iodide) and Photoinduced Electron-Transfer Catalysis in Biaryl Synthesis <i>via</i> Aromatic Arylations with Diazonium Salts
作者:D. Kosynkin、T. M. Bockman、J. K. Kochi
DOI:10.1021/ja970599b
日期:1997.5.1
oxidant. The complex kinetics of such an electron-transfer chain or ETC process (Scheme 1) is quantitatively verified by computer simulation of the Ar‘H-dependent (a) competition between arylation vs iodination and (b) catalytic efficiency of iodide, using the GEAR algorithms. ETC catalysis also pertains to the alternative photochemical procedure for arylation (in the absence of iodide), in which the deliberate
Hyslop, Alison G.; Therien, Michael J., Inorganica Chimica Acta, 1998, vol. 275-276, p. 427 - 434
作者:Hyslop, Alison G.、Therien, Michael J.
DOI:——
日期:——
Visible-Light-Induced, Catalyst-Free Radical Arylations of Arenes and Heteroarenes with Aryldiazonium Salts
作者:Michael C. D. Fürst、Eva Gans、Michael J. Böck、Markus R. Heinrich
DOI:10.1002/chem.201703954
日期:2017.11.2
photocatalyst and other additives, the radical arylation of diverse arenes and heteroarenes has been achieved with aryldiazonium salts under visible‐light irradiation from a blue light‐emitting diode (LED). Although the course of some reactions can be rationalized by the formation of strongly light‐absorbing charge‐transfer (CT) complexes between the diazonium ion and the aromatic substrate, several
Efficient Synthesis of Porphyrin-Containing, Benzoquinone-Terminated, Rigid Polyphenylene Dendrimers
作者:Gregory J. Capitosti、Carol D. Guerrero、David E. Binkley,、Cheruvallil S. Rajesh、David A. Modarelli
DOI:10.1021/jo026520p
日期:2003.1.1
absorption measurements for these dendrimers showed Soret and Q-band absorptions typical of free-base porphyrins. Preliminary steady-state fluorescence measurements of these dendrimers indicate quenching of the S1 state of the free-base porphyrin in all benzoquinone-containing dendrimers that is attributed to efficient electron-transfer from the excited porphyrin to the benzoquinone end-groups. The