14369-94-9Relevant articles and documents
Photoredox-Catalyzed α-C(sp3)-H Activation of Unprotected Secondary Amines: Facile Access to 1,4-Dicarbonyl Compounds
Zhang, Qian,Huang, Yan,Zhan, Le-Wu,Tang, Wan-Ying,Hou, Jing,Li, Bin-Dong
supporting information, p. 7460 - 7464 (2020/10/09)
A photoredox-catalyzed α-C(sp3)-H activation approach of unprotected secondary amines is reported. Such transformations provide facile access to various 1,4-dicarbonyl compounds using readily available amines and α,β-unsaturated compounds as feedstocks under air conditions. The substrate scope of this method is broad, and a wide array of functional groups are tolerated.
Regioselective ring opening and isomerization reactions of 3,4-epoxyesters catalyzed by boron trifluoride
Izquierdo, Javier,Rodriguez, Santiago,Gonzalez, Florenci V.
, p. 3856 - 3859 (2011/09/19)
Efficient ring opening of 3,4-epoxyesters with alcohols to produce 4-alkoxy-3-hydroxyesters and their isomerization into 4-ketoesters using boron trifluoride as the catalyst are presented. Both transformations are simple and efficient methods for the synthesis of the above named synthetically useful compounds.
Synthesis of thermoregulated phase-separable triazolium ionic liquids catalysts and application for Stetter reaction
Yu, Feng-Li,Zhang, Rui-Li,Xie, Cong-Xia,Yu, Shi-Tao
experimental part, p. 9145 - 9150 (2011/01/12)
A series of polyether-substituted triazolium ionic liquids catalysts have been first synthesized for resolving the problem of separation and reuse of Stetter catalysts. The catalysts possess the properties of critical solution temperature (CST) and inverse temperature-dependent solubility in toluene/heptane solvents. Based on these properties, the catalysts can achieve the catalytic process named as thermoregulated phase-separable catalysis (TPSC) with the characteristic of homogeneous reaction at higher temperature and phase-separation at lower temperature. The novel TPSC system has been successfully applied for Stetter reaction of furfural or butanal with ethyl acrylate. The experimental results have showed that the novel catalysts exhibit excellent TPSC with high recycling efficiency.
Polyether-substituted thiazolium ionic liquid catalysts - A thermoregulated phase-separable catalysis system for the Stetter reaction
Yu, Fengli,Zhang, Ruili,Xie, Congxia,Yu, Shitao
experimental part, p. 1196 - 1200 (2010/10/20)
A series of polyether-substituted thiazolium ionic liquids have been synthesized and used as catalysts in the Stetter reaction. The ionic liquids are a thermoregulated phase-separable catalysis (TPSC) system, because they possess the properties of critical solution temperature (CST) and inverse temperature-dependent solubility in toluene-heptane. The results showed that the novel TPSC system exhibits high recycling efficiency, and provides a potential route for a environmentally benign Stetter reaction. The Royal Society of Chemistry 2010.
Radical alkylation of bis(silyloxy)enamine derivatives of organic nitro compounds
Jin, Young Lee,Hong, Young-Taek,Kim, Sunggak
, p. 6182 - 6186 (2007/10/03)
(Chemical Equation Presented) Alkylation β to a nitro group by radical chemistry is made possible by initial conversion of the organic nitro compound into a bis(silyloxy)enamine (see scheme; TBSOTf=tert-butyldimethylsilyl trifluoromethanesulfonate). An advantage of the method is the simultaneous conversion of the nitro group into a synthetically useful oxime ether group.
Pyridazine derivatives useful as components of liquid crystal mixtures
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, (2008/06/13)
Compounds of the formula STR1 wherein B is --C C-- or --CH2 CH2 --, R1 is straight-chain C1 -C12 -alkyl and R2 is straight-chain C1 -C12 -alkyl or straight-chain C1 -C12 -alkoxy, their manufacture and use in liquid crystalline mixtures are described.
Addition of Aldehydes to Activated Double Bonds, XXII. Addition of Aliphatic Aldehydes to α,β-Unsaturated Esters and Nitriles
Stetter, Hermann,Basse, Wolfram,Nienhaus, Juergen
, p. 690 - 698 (2007/10/02)
Thiazolium salt catalysed addition of aliphatic aldehydes to α,β-unsaturated esters and nitriles leads to γ-ketocarboxylic esters (1-24) and γ-ketonitriles (25-32).