109844-94-2Relevant academic research and scientific papers
Facile construction of three-membered rings via benzyne-promoted Darzens-type reaction of tertiary amines
Xu, Ya-Nan,Tian, Shi-Kai
, p. 1632 - 1638 (2018/12/13)
A range of tertiary amines having electron-withdrawing groups were activated in situ by benzyne, generated from 2-(trimethylsilyl)phenyl triflate and a fluoride source, and participated in the Darzens-type reaction with carbonyl compounds, imines, and vinyl ketones to afford structurally diverse epoxides, aziridines, and cyclopropanes, respectively, in moderate to excellent yields with high trans-selectivity. The reaction involves in situ formation of unstrained ammonium ylides from tertiary amines and benzyne, proceeds in the absence of transition metals and strong bases, and tolerates a wide variety of functional groups.
Catalytic investigations of calix[4]arene scaffold based phase transfer catalyst
Srivastava, Pallavi,Srivastava, Rajendra
, p. 4489 - 4493 (2008/02/03)
Calix[4]arene scaffold based quaternary ammonium salts as multi-site phase transfer catalysts were prepared and their catalytic activities were investigated for Darzens condensation, O/N-alkylation reactions and ethyl benzene oxidation. These calix[4]arene based multi-site phase transfer catalysts showed significant high catalytic activity as compared to single-site phase transfer catalysts.
β-alanine derivates
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Page/Page column 22, (2010/02/14)
Alkanoic acid derivatives of formula (1) are described: [in-line-formulae]Ar1(Alka)rL1Ar2CH(R1)C(Ra)(Ra′)R??(1)[/in-line-formulae]Ar1 is an optionally subst
Epoxide Synthesis in Interfacial Solid-Liquid Conditions
Borredon, E.,Clavellinas, F.,Delmas, M.,Gaset, A.,Sinisterra, J. V.
, p. 501 - 504 (2007/10/02)
In this paper an analysis of the factors responsible for discrimination among differing structures of organic reagents by the microcrystalline structure of solids is presented.As a vehicle of this study, the epoxide synthesis using three sulfur ylide precursors (sulfonium and sulfoxonium salts) and four microcrystalline solids was investigated.Neither the surface area nor the number of active sites at the solid surface control the epoxide yield.It appears that the cell lattice of the solid determines the ylide structure, its nucleophilicity, and thus the reaction yield.
