Sonochemical synthesis of lithium fluoride nano cubic as an active and simple catalyst for thia-Michael addition process: synthesis and structural characterization of β-aryl-β-mercapto ketones
size of 21.6 nm, was synthesized sonochemically, usingtetrabutylammonium fluoride as the fluoride source and characterized by SEM-EDX and XRD. This was applied, as a heterogeneous nano-catalyst, to synthesize some β-aryl-β-mercapto ketonederivatives via thia-Michael addition reactions with excellent yields at room temperature. In this catalytic system, the products of undesirable side reactions resulting
以氟化四丁基铵为氟化物源,超声化学合成了平均粒径为21.6 nm的LiF纳米立方,并用SEM-EDX和XRD表征。将其作为非均相纳米催化剂,在室温下通过thia-Michael加成反应合成了一些β-芳基-β-巯基酮衍生物。在该催化体系中,未观察到由硫醇的1,2-加成,聚合,双加成和氧化偶合引起的不希望的副反应产物。通过元素分析,红外光谱,核磁共振和质量以及单晶X射线测定3-(4-氯苯硫基)-1,3-二苯丙-1-酮,1-苯基-3-(苯硫基)来表征产物。 -3-对甲苯基丙烷-1-酮,3-(对甲苯硫基)-1-苯基-3-对甲苯基丙烷-1-酮和3-(4-氯苯硫基)-1-苯基-3-对甲苯基丙烷-1-酮。在最近对CSD的搜索之后,发现没有关于[R 1 ] C [H] [CH 2 C(O)R 2 ] [S-Ar]β-芳基-β-的结构确定的报道。具有SC 6 H 5,SC 6 H 4 - p -CH 3和SC
A mild and highly efficient one-pot three-component reaction for carbon–sulfur bond formation catalyzed by potassium tert-butoxide
作者:Barahman Movassagh、Amir Rakhshani
DOI:10.1016/j.cclet.2011.05.015
日期:2011.7
Potassiumtert-butoxide has been found to be a highly efficient catalyst for one-pot, three-component reaction of aryl aldehydes, acetophenones, and thiols via Claisen–Schmidt/Michael addition reactions for the synthesis of thia-Michael adducts in high yields. The reactions are best carried out in tert-butyl alcohol at room temperature.
The toxicity of organic sulphides to the eggs and larvae of the glasshouse red spider mite. vii.—Benzyl phenyl sulphides (α-substituted)
作者:J. E. Cranham、D. Greenwood、H. A. Stevenson
DOI:10.1002/jsfa.2740090305
日期:1958.3
The synthesis of a number of benzylphenylsulphides, substituted in the α-position of the benzyl moiety, is described and their toxicities to the eggs and young mites of the glasshouseredspider (Tetranychus telarius L.) are tabulated.
Bifunctional acid–base ionic liquid for the one-pot synthesis of fine chemicals: Thioethers, 2H-chromenes and 2H-quinoline derivatives
作者:Maria J. Climent、Sara Iborra、Maria J. Sabater、Juan D. Vidal
DOI:10.1016/j.apcata.2014.05.004
日期:2014.7
A bifunctionalorganocatalyst with ionicliquid properties and with an optimized distancebetween the acid and basic sites efficiently activates electron deficient olefins for 1,4 conjugated addition, which can be incorporated in different one-pot transformations for the preparation of cyclic and acyclic compounds of biological and synthetic interest. More specifically, the catalyst can be successfully
Photoredox β-thiol-α-carbonylation of enones accompanied by unexpected Csp<sup>2</sup>–C(CO) bond cleavage
作者:Rui Ma、Jie Feng、Kuili Zhang、Beichen Zhang、Ding Du
DOI:10.1039/d0ob01349h
日期:——
preliminary investigation of the mechanism indicated that a β-peroxysulfide intermediate was formed under the promotion of visible light under an oxygen atmosphere, which finally induced the unexpected C–C bond cleavage.