[EN] LIGHT INDUCED CATALYTIC C-H OXYGENATION OF ALKANES<br/>[FR] OXYGÉNATION C-H CATALYTIQUE INDUITE PAR LA LUMIÈRE D'ALCANES
申请人:ARIEL SCIENT INNOVATIONS LTD
公开号:WO2021059287A1
公开(公告)日:2021-04-01
A method of oxygenating a benzylic C-H bond is provided. The method comprises light induced activation of an initiator and subsequent reaction with oxygen, resulting in the formation of free radicals. Subsequently, free radicals catalyze the reaction of the benzylic C-H bond with oxygen, thereby forming an oxygenated compound.
N- Hydroxyphthalimide and transition metal salts as catalysts of the liquid-phase oxidation of 1-methoxy-4-(1-methylethyl)benzene with oxygen
作者:Beata Orlińska、Iwona Romanowska
DOI:10.2478/s11532-011-0048-0
日期:2011.8.1
The oxidation process of 1-methoxy-4-(1-methylethyl)benzene catalysed by N-hydroxyphthalimide (NHPI) or NHPI in combination with Cu(II), Co(II), Mn(II) and Fe(II) salts was studied. The effects of the amount of catalyst and the temperature were determined. 1-Methyl-1-(4-methoxyphenyl)ethyl hydroperoxide was obtained in a yield of 73 mol% when 1-methoxy-4-(1-methylethyl)benzene was oxidised for 3 h
Efficient and selective oxidation of tertiary benzylic C H bonds with O2 catalyzed by metalloporphyrins under mild and solvent-free conditions
作者:Hai-Min Shen、Meng-Yun Hu、Lei Liu、Bei Qi、Hong-Liang Ye、Yuan-Bin She
DOI:10.1016/j.apcata.2020.117599
日期:2020.6
The direct and efficient oxidation of tertiary benzylic CH bonds to alcohols with O2 was accomplished in the presence of metalloporphyrins as catalysts undersolvent-free and additive-free conditions. Based on effective inhibition on the unselective autoxidation and deep oxidation, systematical investigation on the effects of porphyrin ligands and metal centers, and apparent kinetics study, the oxidation
free-radical chain oxidation of 1-isopropyl-4-methoxybenzene (1a) and 1-ethyl-4-methoxybenzene (1b) with oxygen in the liquid phase to yield 1-methyl-1-(4-methoxyphenyl)ethyl hydroperoxide (2a) and 1-(4-methoxyphenyl)ethyl hydroperoxide (2b). The oxidizability of 1a and 1b was studied over the temperature range 50–100°C. Long-term oxidations of 1a and 1b to the corresponding hydroperoxides were carried out