27843-11-4Relevant articles and documents
Synthesis method of phenylacetaldehyde derivative
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Paragraph 0041; 0046-0047; 0050, (2021/08/07)
The present invention discloses a synthesis method of phenylacetaldehyde derivative, a benzaldehyde derivative is adopted as a raw material, an intermediate 2-methoxyvinylphenyl derivative is obtained through synthesis, then the phenylacetaldehyde derivative is obtained through synthesis, and the substituent group R of the benzaldehyde derivative includes but is not limited to m-methyl, m-ethyl, m-nitrile group, p-methyl, o-methyl, o-nitro and 2, 6-dimethyl. The synthesis process is simple, synthesis conditions are mild, post-treatment is relatively simple, and industrial production is easy; the universality is good, and substrates with different functional groups are compatible; the yield is considerable, part of compounds are almost quantitatively converted, and the requirement of atom economy is met.
NOVEL TETRADENTATE PLATINUM COMPLEXES
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Page/Page column 159-160, (2012/09/11)
Novel phosphorescent tetradentate platinum (II) compounds comprising a twisted aryl group are provided. Also provided are novel phosphorescent tetradentate platinum (II) compounds comprising an imidazo[1,2-f]phenanthridine moiety. The compounds may be used in organic light emitting devices to provide improved device efficiency, line shape and lifetime.
Epoxidation of Olefins with Cationic (salen)MnIII Complexes. The Modulation of Catalytic Activity by Substituents
Srinivasan, K.,Michaud, P.,Kochi, J. K.
, p. 2309 - 2320 (2007/10/02)
Cationic manganese(III) complexes of the salen ligand are effective catalysts for the epoxidation of various olefins with iodosylbenzene as the terminal oxidant.The presence of electron-withdrawing groups, such as 5,5'-dichloro or -dinitro substituents, enhances the catalytic activity of the (salen)MnIII catalyst in measure with the electron-deficient character of the cationic complex as evaluated by the standard reduction potential E0.Various types of olefins, including substituted styrenes, stilbenes, and cyclic and acyclic alkenes, are epoxidized in 50-75percent yields within 15 min at ambient temperatures in acetonitrile.Stereospecific epoxidation in achieved with trans-olefins such as (E)-2-hexene and (E)-β-methylstyrene. cis-Olefins produce high yields of cis-epoxides which contain minor amounts of the corresponding trans isomer.Competition from allylic oxidation is minor with this catalyst system-cyclohexene being converted selectively to its epoxide accompanied by only traces of cyclohexenol.Competition studies indicate that the relative reactivity of olefins toward catalytic epoxidation with the cationic (salen)MnIII complexes falls into an unusually narrow range, the difference between the most reactive, p-methoxystyrene, and the least reactive, 1-octene, being only a factor of 10.The effect of donor ligands such as pyridine and imidazole is discussed in the context of a radical-like behavior of an oxomanganese species as the reactive intermediate.The latter is supported by some preliminary studies of alkane oxdation using cyclohexane as a model.
