- An efficient approach for aromatic epoxidation using hydrogen peroxide and Mn(III) porphyrins
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Efficient epoxidation, in very high conversions and selectivities, of aromatic hydrocarbons with hydrogen peroxide, in the presence of Mn III porphyrins [Mn(TDCPP)Cl, Mn(βNO2TDCPP)Cl, Mn(TPFPP)Cl] as catalysts is described; naphthalene and anthracene afford the anti-1,2:3,4-arene dioxides whereas with phenanthrene the 9,10-oxide is obtained.
- Rebelo, Susana L. H.,Simoes, Mario M. Q.,Neves, M. Graca P. M. S.,Silva, Artur M. S.,Cavaleiro, Jose A. S.
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p. 608 - 609
(2007/10/03)
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- Cobalt(II) porphyrin: A versatile catalyst for the oxidation of organic substrates with dioxygen and 2-methyl propanal
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Cobalt(II)-porphyrin 1 is a versatile catalyst as it promotes the oxidation of wide range of organic substrates at ambient condition by using a combination of molecular oxygen and 2-methyl propanal.
- Mandal,Khanna,Iqbal
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p. 3769 - 3772
(2007/10/03)
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- Hydrogen Transfer Reactions, 9. Synthesis and Analytics of Selectively Deuterated 1,4-Cyclohexadienes and 1,4-Dihydronaphthalenes
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Five isotopomers of 1,4-cyclohexadiene (1a - e) and four of 1,4-dihydronaphthalene (2a - d) have been synthesized in an isotopomeric purity sufficient for mechanistic experiments.
- Brock, Martin,Hintze, Horst,Heesing, Albert
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p. 3718 - 3726
(2007/10/02)
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- Chemistry of anti- and syn-1,2:3,4-Naphthalene Dioxides and Their Potential Relevance as Metabolic Intermediates
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The reactivity, site of attack, and stereochemistry of reactions of a variety of nucleophiles with the anti- and syn-1,2:3,4-naphthalene dioxides have been explored.In most cases, substituted tetrahydronaphthalene products arising through attack at the C-1 and C-4 positions in the anti mode were obtained.These isomeric dioxides provide excellent precursors for a number of difficultly accessible 1,4-disubstituted naphthalene derivatives such as 1,4-diphenoxynaphthalene and 1,4-dicyanonaphthalene.Evidence is also presented that anti-naphthalene dioxide constitutes an intermediate metabolite in the rat.
- Tsang, Wing-Sum,Griffin, Gary W.,Horning, M. G.,Stillwell, W. G.
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p. 5339 - 5353
(2007/10/02)
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