Synthesis, physicochemical and anticonvulsant properties of new N-pyridyl derivatives of 3-phenyl- and 3,3-diphenyl-succinimides
摘要:
Synthesis and physicochemical properties of new N-pyridyl derivatives of 3-phenyl and 3,3-diphenylsuccinimides (1-12) have been described. The obtained compounds were evaluated in respect of their anticonvulsant activity. The N-pyridyl derivatives of 3-phenylsuccinimides (7-12) abolished the protection against MES- and scMET-induced seizures, whereas N-pyridyl derivatives of 3,3-diphenylsuccinimides (1-6) were inactive. After molecular modelling and quantum-chemistry calculations the theoretical activity test was applied (W. Kwiatkowski, J. Karolak-Wojciechowska, SAR and QSAR Envir. Res. 1 (1993) 233; Chem. Abstr. 120, 153001 (1994). J. Karolak-Wojciechowska, M. Blaszczyk, W. Kwiatkowski, J. Obniska, A. Zejc, J. Chem. Cryst. 27 (1997) 297; Chem. Abstr. 127, 277834k (1997)). The molecular electrostatic potential (MEP) of the active compounds differed significantly from that of the inactive ones. (C) 1999 Elsevier Science S.A. All rights reserved.
Direct β-Selective Hydrocarboxylation of Styrenes with CO<sub>2</sub> Enabled by Continuous Flow Photoredox Catalysis
作者:Hyowon Seo、Aofei Liu、Timothy F. Jamison
DOI:10.1021/jacs.7b05942
日期:2017.10.11
The direct β-selective hydrocarboxylation of styrenes under atmospheric pressure of CO2 has been developed using photoredoxcatalysis in continuous flow. The scope of this methodology was demonstrated with a range of functionalized terminal styrenes, as well as α-substituted and β-substituted styrenes.
已经在连续流动中使用光氧化还原催化开发了在 CO2 大气压下苯乙烯的直接 β-选择性加氢羧化反应。该方法的范围通过一系列官能化的末端苯乙烯以及 α-取代和 β-取代的苯乙烯进行了证明。
Reductive Arylation of Maleic and Fumaric Acid Derivatives by Arenediazonium and Titanium(III) Salts
The titanium(III)-induced decomposition of substituted benzenediazonium salts in the presence of maleic and furamic acids, alkyl esters, amides, and nitriles gives the corresponding arylsuccinic acid derivatives.
Visible-light-driven alkene dicarboxylation with formate and CO<sub>2</sub> under mild conditions
作者:Fulin Zhang、Xiao-Yang Wu、Pan-Pan Gao、Hao Zhang、Zhu Li、Shangde Ai、Gang Li
DOI:10.1039/d3sc04431a
日期:2024.4.24
dicarboxylation of diverse alkenes, including simple styrenes. The highly competing hydrocarboxylation side reaction was successfully overridden. Good yields of products were obtained undermild reaction conditions at ambient temperature and pressure of CO2. The dual role of formate salt may stimulate the discovery of a range of new transformations undermild and friendly conditions.
ring-opening carboxylation of styrene carbonates with CO2 to achieve dicarboxylic acids and/or β-hydroxy acids has been developed via the selective cleavage of the C(sp3)–O bond in cyclic carbonates. The product selectivity is probably determined by the stability and reactivity of the key benzylic radical and carbanionintermediate.
通过选择性裂解环状碳酸酯中的 C(sp 3 )–O 键,开发了苯乙烯碳酸酯与 CO 2的电还原开环羧化以获得二羧酸和/或β-羟基酸。产物选择性可能由关键的苄基和碳负离子中间体的稳定性和反应性决定。
Urbanski; Lange, Roczniki Chemii, 1959, vol. 33, p. 197,199, 201