52323-95-2Relevant academic research and scientific papers
Trans-1,2-Disiloxybenzocyclobutene, an adequate partner for the auto-oxidation: EPR/spin trapping and theoretical studies
Drujon, Jean,Rahmani, Raphael,Heran, Virginie,Blanc, Romain,Carissan, Yannick,Tuccio, Beatrice,Commeiras, Laurent,Parrain, Jean-Luc
, p. 7513 - 7520 (2014/04/17)
The auto-oxidation of trans-1,2-disiloxybenzocyclobutene 1 was found to be very efficient, giving endo-peroxide 7 in quantitative yield. Each step of the mechanism of spin-forbidden addition of triplet oxygen O2( 3Σg) was
Reactions of Tris(trimethylsilyl)silyl Radicals with Nitroalkanes. EPR, Kinetic, and Product Studies
Ballestri, Marco,Chatgilialoglu, Chryssostomos,Lucarini, Marco,Pedulli, Gian Franco
, p. 948 - 952 (2007/10/02)
The radical-initiated reaction of tris(trimethylsilyl)silane with a variety of aliphatic nitro derivatives has been investigated.This silane, which for many applications is a valid alternative to tributyltin hydride, is unable to reduce tertiary nitroalkanes to the corresponding hydrocarbons.EPR results, as well as kinetic and products studies, have shown that this "anomalous" behavior is due to the fact that the nitroxide adducts formed by addition of tris(trimethylsilyl)silyl radicals to the nitro compounds fragment preferentially at the nitrogen-oxygen bond ratherthan at the carbon-nitrogen bond as in the analogous tributyltin adducts.The resulting silyloxy radical, (Me3Si)3SiO, undergoes a fast rearrangement (k 107 s-1 at room temperature) with migration of a Me3Si group from silicon to oxygen to give (Me3Si)2SiOSiMe3 which adds to the nitro compound affording a secondary nitroxide adduct.The kinetics of the decay of both primary and secondary adducts to nitromethane has been studied over a wide range of temperatures.With tertiary nitroalkanes persistent aminyl radicals, RNOSi(SiMe3)3, have also been detected.
Reactions of Ozonate and Superoxide Radical Anions
Forrester, Alexander R.,Purushotham, Vemishetti
, p. 211 - 218 (2007/10/02)
Potassium ozonate has been prepared by reaction of ozone with potassium superoxide dispersed in Freon-12.Orange solutions of potassium ozonate in benzene or toluene containing 18-crown-6 react with nitrone traps to give spin adducts mainly derived from the oxide radical anion, which is a decomposition product of the ozonate radical anion.With 2-methyl-2-nitrosopropane in toluene solution the ozonate gives five nitroxide radicals in whose formation the oxide radical anion is again implicated.With nitrosobenzene electron transfer occurs.Comparable reactions with superoxide are described.
SPIN-TRAPPING OF α-AZIDOALKYL RADICALS
Cook, Malcolm D.,Ng, Lee Len,Roberts, Brian P.
, p. 3761 - 3764 (2007/10/02)
Spin-trapping with 2-methyl-2-nitrosopropane of the α-azidoalkyl radicals derived from isopropyl and benzyl azides competes effectively with loss of nitrogen from these radicals at 313 K.
