Mimicking the vanadium bromoperoxidases reactions:Mild and selective bromination of arenes and alkenes in a two-phase system
作者:Valeria Conte、Fulvio Di Furia、Stefano Moro
DOI:10.1016/0040-4039(94)85333-9
日期:1994.10
Vanadiumbromoperoxidases catalyze the oxidation of bromide ion by hydrogen peroxide to a bromine-equivalent intermediate. This, in turn, brominates organic molecules. The hypothesis is made that the former reaction takes place in the hydrophilic portion of the enzyme whereas the latter proceeds in a hydrophobic one in which the brominating intermediate is rapidly transferred. We have reproduced such
钒溴过氧化物酶催化过氧化氢将溴离子氧化为溴当量中间体。反过来,这会溴化有机分子。假设前者反应发生在酶的亲水部分,而后者则发生在疏水反应中,其中溴化中间体迅速转移。我们通过采用两相(H 2 O / CHCl 3)系统来重现这种情况。在酸性水相中,存在H 2 O 2和催化量的NH 4 VO 3以及KBr。将底物,即芳族烃和烯烃溶解在CHCl 3中。在25°C搅拌下,溴化反应平稳进行,提供了高产率的相应溴化产物。
Momose, Den-ichi; Iguchi, Kazuo; Sugiyama, Toshikazu, Chemical and pharmaceutical bulletin, 1984, vol. 32, # 5, p. 1840 - 1853
Ying, Taokei; Bao, Weiliang; Zhang, Yoegmin, Journal of Chemical Research, 2004, # 12, p. 806 - 807
作者:Ying, Taokei、Bao, Weiliang、Zhang, Yoegmin
DOI:——
日期:——
Nuclear magnetic resonance investigation of the iodination of 1,2-disubstituted ethylenes. Evidence for a trans addition-cis elimination
作者:Murray Zanger、Joseph L. Rabinowitz
DOI:10.1021/jo00890a022
日期:1975.1
Synthesis of aromatic triols and triacids from oleic and erucic acid: separation and characterization of the asymmetric and symmetric isomers
作者:Jin Yue、Suresh S. Narine
DOI:10.1016/j.chemphyslip.2007.11.002
日期:2008.3
Hexasubstituted benzene derivatives, aromatic triols 4, 9 and triacids 5, 10 have been synthesized front oleic and erucic acid derivatives followed by a cyclotrimerization step catalyzed by palladiuni-on-carbon (Pd/C) and chlorotrimethylsilane (TMSCI). The asymmetric isomer, which is the main product, was isolated from its symmetric isomer by flash chromatography. All the products were fully characterized by FIR, H-1 NMR, C-13 NMR and mass spectrornetry. The products are suitable monomers for the production of polyurethanes, polyesters and polyamides. (c) 2007 Elsevier Ireland Ltd. All rights reserved.