Mechanistic Investigation of a Novel Vitamin B<sub>12</sub>-Catalyzed Carbon−Carbon Bond Forming Reaction, the Reductive Dimerization of Arylalkenes
作者:Justin Shey、Chris M. McGinley、Kevin M. McCauley、Anthony S. Dearth、Brian T. Young、Wilfred A. van der Donk
DOI:10.1021/jo0160470
日期:2002.2.1
reaction to the active Co(I) state, and by removing Co(II) it also prevents the nonproductive recombination of alkyl radicals with cob(II)alamin. The mechanism of the formation of benzylic radicals from arylalkenes and cob(I)alamin poses an interesting problem. The results with a one-electron transfer probe indicate that radical generation is not likely to involve an electrontransfer. Several alternative
The reactions of t-butyl peroxide with toluene derivatives
作者:H. H. Huang、P. K. K. Lim
DOI:10.1039/j39670002432
日期:——
The reactions of t-butylperoxide with toluene derivatives, containing chloro-, bromo-, cyano-, methyl-, and phenyl-substituents in the alkyl side chain and p-halogeno-substituents in the nucleus, give variable yields of the corresponding dehydro-dimers. Good yields are obtained with the p-halogeno-substituted cumenes, benzyl cyanide, p-chlorobenzyl cyanide, benzylidene dichloride, and p-bromoethylbenzene
Hammett Analysis of Photodecarbonylation in Crystalline 1,3-Diarylacetones
作者:Marino J. E. Resendiz、Miguel A. Garcia-Garibay
DOI:10.1021/ol0480527
日期:2005.2.1
The relative quantum yields and chemical efficiencies of crystalline p,p'-disubstituted 1,3-diphenyl-2-propanones with 4-MeO2 4Me(2) 4-F-2 4-CF3, and 3,4-diMeO groups were determined by parallel irradiation of polycrystalline samples. Variations in quantum yields that span a factor of 4 are analyzed in terms of the effects of substituents on the stability of the benzylic radical. All solid-state reactions proceeded with 100% chemoselectivity and in >95% chemical yield.
Chemistry of diarylazoalkanes. III. Effect of structural variation on rate and nature of the thermal decomposition
作者:Peter Kovacic、Roland R. Flynn、Joseph F. Gormish、A. Hanson Kappelman、J. Reid Shelton