Tetrahedron LettersNew free-radical halogenations of alkanes, catalysed by N -hydroxyphthalimide. Polar and enthalpic effects on the chemo- and regioselectivity[J] . Francesco Minisci,Ombretta Porta,Francesco Recupero,Cristian Gambarotti,Roberto Paganelli,Gian Franco Pedulli,Francesca Fontana.Tetrahedron ...
ChemInform Abstract: Free Radical Halogenation of Alkanes Initiated by Transition Metal Complexeshalogenation, dehalogenationNo abstract is available for this article.doi:10.1002/chin.198716141DAVIS, RDURRANT, J. L. AROWLAND, C. CWiley-BlackwellCheminform...
1. A Review of General Chemistry5h 5m 2. Molecular Representations1h 14m 3. Acids and Bases2h 46m 4. Alkanes and Cycloalkanes4h 19m 5. Chirality3h 39m 6. Thermodynamics and Kinetics1h 22m 7. Substitution Reactions1h 48m 8. Elimination Reactions2h 30m 9. Alkenes and Alkynes2h 9m 10. Ad...
We disclose here an operationally simple and mechanistically distinct catalytic transfer protocol for the vicinal dihalogenation of carbon–carbon multiple bonds in alkenes, alkynes and allenes using easily synthesized oxime-based dihalogen surrogates. The reaction is promoted by visible-light photoredox ...
The photoinitiated chlorination of several substituted alkanes with iodobenzene dichloride (IBD) showed product isomer distributions which were remarkably similar to those obtained for halogenation with molecular chlorine. IBD had been previously shown to halogenate 2,3-dimethylbutyl by a mechanism which did...
Reaction of Methane with Other Halogens Monochlorination of alkanes proceeds with limited selectivity. Tertiary hydrogens are roughly 5 times more reactive than primary. Secondary hydrogens are roughly 3.5 times more reactive than primary. Halogenation of Higher Alkanes ...
Features an excellent systematic study of α-heteroatom radicals. Article CAS PubMed PubMed Central Google Scholar Wappes, E. A., Vanitcha, A. & Nagib, D. A. β C–H di-halogenation via iterative hydrogen atom transfer. Chem. Sci. 9, 4500–4504 (2018). Article CAS PubMed PubMed ...
Halogenation of Alkanes Radical Reactions • When a single hydrogen atom on a carbon has been replaced by a halogen atom, monohalogenation has taken place. • When excess halogen is used, it is possible to replace more than one hydrogen atom on a single carbon with halogen atoms. ...
FREERADICALCHEMISTRY自由基化学讲义课件 Chapter9.FreeRadicalChemistry 1.Theconceptoffreeradical Gomberg认为：2(C6H5)3C (C6H5)3CC(C6H5)3 1968年，NMR技术 H(C6H5)3C C6H5C6H5 benzene 2(C6H5)3C 自由基：一类带有未配对电子的原子或分子：甲基自由基，NO中性自由基，带电荷的自由基 HHH sp2 Some...
By applying CH2Br2 as both the solvent and the bromine radical source, the alkylation and amination of tertiary C(sp3)–H bonds were achieved in a highly selective fashion. This study represents the first example of selective activation of unactivated alkanes by bromine radicals in a catalytic ...