Araneo, S., Arrigoni, R., Bjosyik, H.-R., Fontana, F., Liguori, L., Minisci, F., Recupero, F., 1996. New free-radical chain processes involving substitution of vinyl and aryl chlorides by alkanes, alkenes, esters and ethers. Tretrahedron Lett. 37, 6897e 6900....
Interactive 3D chemistry animations of reaction mechanisms and 3D models of chemical structures for students studying University courses and advanced school chemistry hosted by University of Liverpool
+ + Production of the Hydroxyl Radical in Indoor Air:室内空气中的羟基自由基+生产 热度: Mechanism and kinetic study on the gas-phase reactions of OH radical with carbamate insecticide isoprocarb 热度: Introduction to Scrubber - The University of Utah - HSC Core ...
When alkanes larger than ethane are halogenated, isomeric products are formed. Thus chlorination of propane gives both 1-chloropropane and 2-chloropropane as mono-chlorinated products. Four constitutionally isomeric dichlorinated products are possible, andfive constitutional isomersexist for the trichlorin...
(a) Investigation of the effects of arene substitution of hydrazones. (b) Substrate scope of aliphatic unsaturated hydrazones. (c) Substrate scope of alkene moieties. Unless otherwise noted, reactions were run with 1 or 5 (0.3 mmol), Ru(bpy)3Cl2 Á 6H2O (0.006 mmol, 2.0 mol%), K2CO...
With the optimal reaction conditions in hand, a series of dienes and alkyl diacyl peroxides were selected to examine the tolerance of substitution patterns and functional groups in the asymmetric radical carboesterification process (Fig. 3). A variety of enantioenriched allylic esters (3–44) were ...
Finally, reactions of aryl radicals with olefins are discussed. It is also shown that aryl radicals react efficiently with various heteroatom-based radical acceptors for aryl-X bond formation (X=Se, S, Te, B, P). Keywords: radical arylation; homolytic substitution; biaryls; aryl radicals 展开 ...
Ozone (O3) in the upper atmosphere acts as a chemical sunscreen, it absorbs a lot of the ultraviolet (UV) radiation which can cause sunburn and even skin cancer. Ozone is naturally formed in the atmosphere. As shown above, Cl• radicals are formed by the break down of CFCs by UV radi...
• Halogenation of alkanes is a radical substitution reaction. • Halogenation of alkanes is only useful with Cl 2 or Br 2 . Reaction with F 2 is too violent, and reaction with I 2 is too slow to be useful. • With an alkane that has more than one type of hydrogen atom, a ...
However, the selectivity control of reactive radical intermediates is still a great challenge in these transformations. Here we show a selective radical oxidative C(sp3)–H/C(sp)–H cross-coupling of unactivated alkanes with terminal alkynes by using a combined Cu/Ni/Ag catalytic system. It ...