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Oxidative Photocatalytic Homo- and Cross-Coupling of Phenols: Nonenzymatic, Catalytic Method for Coupling Tyrosine
作者:Kyle A. Niederer、Philip H. Gilmartin、Marisa C. Kozlowski
DOI:10.1021/acscatal.0c04515
日期:2020.12.18
An oxidative photocatalytic method for phenol–phenol homo- and cross-coupling is described, and isolated yields of 16–97% are obtained. Measured oxidation potentials and computed nucleophilicity parameters support a mechanism of nucleophilic attack of one partner onto the oxidized neutral radical form of the other partner. Our understanding of this model permitted the development of cross-coupling reactions
描述了一种用于苯酚-苯酚均偶联和交叉偶联的氧化光催化方法,获得了 16-97% 的分离产率。测量的氧化电位和计算出的亲核性参数支持一个伙伴亲核攻击另一个伙伴的氧化中性自由基形式的机制。我们对这种模型的理解允许亲核酚/芳烃与易氧化酚之间的交叉偶联反应的发展,具有高选择性和效率。这种方法的一个亮点是使用了每个耦合伙伴的一个等价物。基于这些发现,还开发了一种用于偶联酪氨酸的非酶促催化方法。
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Process for preparing 3,3',5,5',6,6'-hexaalkyl-2,2'-biphenols, 3,3',4,4',5,5'-hexaalkyl-2,2'-biphenols and 3,3',4,4',5,5',6,6'-octaalkyl-2,2'-biphenols
申请人:INVISTA Technologies S.à.r.l.
公开号:EP2279993A1
公开(公告)日:2011-02-02
A process for making a compound of Formula (I) by oxidative coupling of a compound of the formula (11) in the presence of a molecular oxygen-containing gas and a copper-containing catalyst produced by contacting a copper halide salt with an organic diamine compound. Some compounds of the formula (I) are also claimed.
一种制造式(I)化合物的工艺,其方法是在含氧分子气体和含铜催化剂存在下,将式(11)化合物氧化偶联,该催化剂是通过将卤化铜盐与有机二胺化合物接触而制得的。本发明还要求得到一些式(I)化合物。
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Alpha-FE2O3 nanoparticles and method of making and use thereof in photodegradation of organic pollutants, as a photocatalyst and as an antibacterial composition
申请人:Imam Abdulrahman Bin Faisal University
公开号:US11235983B2
公开(公告)日:2022-02-01
A method for producing crystalline α-Fe2O3 nanoparticles involving ultrasonic treatment of a solution of an iron (III)-containing precursor and an extract from the seeds of a plant in the family Linaceae. The method involves preparing an aqueous extract from the seeds of a plant in the family Linaceae and dropwise addition of the extract to the solution of an iron (III)-containing precursor. The method yields crystalline nanoparticles of α-Fe2O3 having a spherical morphology with a diameter of 100 nm to 300 nm, a mean surface area of 240 to 250 m2/g, and a type-II nitrogen adsorption-desorption BET isotherm with a H3 hysteresis loop. A method for the photocatalytic decomposition of organic pollutants using the nanoparticles is disclosed. An antibacterial composition containing the crystalline α-Fe2O3 nanoparticles is also disclosed.
一种生产结晶α-Fe2O3 纳米粒子的方法,包括对含铁(III)前体溶液和一种亚麻科植物种子的提取物进行超声波处理。该方法包括制备亚麻科植物种子的水提取物,并将提取物滴加到含铁(III)前体的溶液中。该方法得到的α-Fe2O3 结晶纳米粒子呈球形,直径为 100 纳米至 300 纳米,平均表面积为 240 至 250 平方米/克,氮吸附-解吸 BET 等温线为 II 型,具有 H3 滞后环。本研究还公开了一种利用纳米粒子光催化分解有机污染物的方法。还公开了一种含有结晶 α-Fe2O3 纳米粒子的抗菌组合物。
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Buryan,P. et al., Collection of Czechoslovak Chemical Communications, 1979, vol. 44, p. 2798 - 2814
作者:Buryan,P. et al.
DOI:——
日期:——
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PROCESS FOR PREPARING 3,3',5,5',6,6'-HEXAALKYL-2,2'-BIPHENOLS, 3,3',4,4',5,5'-HEXAALKYL-2,2'-BIPHENOLS AND 3,3',4,4',5,5',6,6'-OCTAALKYL-2,2'-BIPHENOLS
申请人:Invista Technologies S.à.r.l.
公开号:EP1467958B1
公开(公告)日:2014-01-08