Subsupercritical Water Generated by Inductive Heating Inside Flow Reactors Facilitates the Claisen Rearrangement
作者:Andreas Kirschning、Mona Oltmanns
DOI:10.1055/s-0040-1705945
日期:2020.12
O-allylated phenols, including fluorine-modified phenols, is facilitated in aqueous media at high temperatures and pressures under flow conditions, as opposed to organic solvents. The O-allylation of phenols can be coupled with the Claisen rearrangement in an integrated flow system. Publication History Received: 14 August 2020 Accepted after revision: 16 September 2020 Publication Date: 27 October 2020
Synthesis and Biological Activity of 11-(4-(Cinnamyl)-1-piperazinyl)-6,11-dihydrodibenz(b,e)oxepin Derivatives, Potential Agents for the Treatment of Cerebrovascular Disorders.
A series of 11-[4-(cinnamyl)-1-piperazinyl]-6, 11-dihydrodibenz[b, e]oxepins and related compounds were synthesized and evaluated for their protective activities against complete ischemia, normobaric hypoxia, lipidperoxidation and convulsion. Structure-activity relationship studies of this series led to the finding of (E)-1-(3-fluoro-6, 11-dihydrodibenz[b, e]oxepin-11-yl)-4-(3-phenyl-2-propenyl)piperazine dimaleate (50), AJ-3941 with the most appropriate property for combined pharmacological activities.
Synthesis of Partially Fluorinated Organic Compounds from Perfluoro-2-methyl-2-pentene and Phenol Derivatives
作者:G. G. Furin、E. L. Zhuzhgov、K.-V. Chi、N.-A. Kim
DOI:10.1007/s11176-005-0238-6
日期:2005.3
The reactions of perfluoro-2-methyl-2-pentene with substituted phenols and some heterocyclic compounds containing OH group result in the substitution of the fluorine atom either exclusively at the internal multiple bond or at the terminal multiple bond of perfluoro-2-methyl-1-pentene formed by isomerization of the starting perfluoroolefin in the course of the reaction. The reaction pathway depends on the reaction conditions, base used, and substituents in the benzene ring. The structures of the compounds were confirmed by 1H, 13C, and 19F NMR and IR spectroscopy.
Substituted (2-phenoxyphenyl)acetic acids with antiinflammatory activity. 1
作者:David C. Atkinson、Keith E. Godfrey、Bernard Meek、John F. Saville、Michael R. Stillings
DOI:10.1021/jm00364a004
日期:1983.10
The synthesis and antiinflammatoryactivity of a series of substituted (2-phenoxyphenyl)acetic acids are described. Initial screening in the adjuvant arthritis test showed that halogen substitution in the phenoxy ring enhanced activity considerably. Ulcerogenic potential, as measured by the minimum ulcerogenic dose (MUD), was low in almost all the acids tested. [2-(2,4-Dichlorophenoxy)phenyl]acetic
Mechanistic Insights into the <i>ortho</i>-Defluorination-Hydroxylation of 2-Halophenolates Promoted by a Bis(μ-oxo)dicopper(III) Complex
作者:Pau Besalú-Sala、Carla Magallón、Miquel Costas、Anna Company、Josep M. Luis
DOI:10.1021/acs.inorgchem.0c02246
日期:2020.12.7
. Albeit it is known that such reactivity is promoted by an electrophilic attack of a [Cu2O2]2+ core over the arene ring, the crucial details of the mechanism that explain the chemo- and regioselectivity of the reaction remain unknown, and it has not being determined either if CuII2(η2:η2-O2) or CuIII2(μ-O)2 species are responsible for the initial attack on the arene. Herein, we present a combined
CF键是最惰性的功能之一。然而,一些物[Cu 2 Ò 2 ] 2+物种能够脱氟-羟基化邻-fluorophenolates在比其它化学选择性的方式邻-halophenolates。尽管已知这种反应性是通过[Cu 2 O 2 ] 2+核对芳烃环的亲电攻击而促进的,但解释该反应的化学和区域选择性的机理的关键细节仍然未知,并且还没有被如果任一确定的Cu II 2(η 2:η 2 -O 2)或CuIII 2(μ-O)2物种负责对芳烃的初始攻击。本文中,我们提出了一项理论和实验机制相结合的研究,以阐明[Cu 2(O)2(DBED)2 ] 2+络合物对2-卤代酚盐的邻位脱氟羟基化反应的化学选择性的起源(DBED = N,ñ ' -二叔-butylethylenediamine)。我们的结果表明,(侧向)过氧(P)和bis(μ-氧代)(O异构体在该机理中起关键作用,后者是反应性物质。此外,基于量子力学计算,我们能够使[Cu