35155-84-1Relevant academic research and scientific papers
How Water in Aliphatic Solvents Directs the Interference of Chemical Reactivity in a Supramolecular System
Mabesoone, Mathijs F. J.,Ter Huurne, Gijs M.,Palmans, Anja R. A.,Meijer
, p. 12400 - 12408 (2020)
Water is typically considered to be insoluble in alkanes. Recently, however, monomerically dissolved water in alkanes has been shown to dramatically impact the structure of hydrogen-bonded supramolecular polymers. Here, we report that water in methylcyclo
SYNTHESIS OF NEW CHIRAL PHASE-TRANSFER CATALYSTS AND THEIR APPLICATION TO MICHAEL ADDITIONS.
Banfi,Cinquini,Colonna
, p. 1841 - 1843 (1981)
A series of chiral onium salts derived from (L)-( plus )-methionine have been examined for the catalysis of Michael additions in phase-transfer conditions. The chemical yields are high, but no asymmetric induction was observed. One particular catalyst rep
The study of biocatalyzed thio-Michael reaction: A greener and multi-gram protocol
Rizzo, Paula V.S.,Boarin, Ligia A.,Freitas, Ingridhy O.M.,Gomes, Roberto S.,Beatriz, Adilson,Rinaldi, Andrelson W.,Domingues, Nelson Luís C.
, p. 430 - 434 (2014)
This Letter introduces a new, cheap and green protocol for the thio-Michael reaction. Here we applied three free enzymes such as lipase from pancreas porcine, chymosin and papain and an immobilized one: the Liposyme. The reactions were executed at room te
Method for synthesizing beta-thiocarbonyl compound by taking aryl sulfonyl chloride as sulfur source
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Paragraph 0042; 0043; 0044; 0045, (2020/11/09)
The invention discloses a method for synthesizing a beta-thiocarbonyl compound by taking aryl sulfonyl chloride as a sulfur source, comprising the following steps of: in an air atmosphere, adding arylsulfonyl chloride, ketene, triphenylphosphine, potassiu
Zinc complexes supported by pyridine-: N -oxide ligands: Synthesis, structures and catalytic Michael addition reactions
Chen, Ze-Wen,He, Piao,Liu, Chao,Mo, Xiu-Fang,Tong, Hai-Xia,Xiong, Chang-Feng,Yi, Xiao-Yi
, p. 12365 - 12371 (2020/10/02)
New dipyridylpyrrole N-oxide ligands HL1 and HL2 are designed and synthesized via oxidation of 2-(5-(pyridin-2-yl)-1H-pyrrol-2-yl)pyridine (Hdpp) by using 3-chloroperbenzoic acid (m-CPBA) in CH2Cl2. The treatment of ZnEt2 with two equiv. of HL1 and HL2 af
Cooperative catalysis with block copolymer micelles: A combinatorial approach
Bukhryakov, Konstantin V.,Desyatkin, Victor G.,O'Shea, John-Paul,Almahdali, Sarah R.,Solovyeva, Vera,Rodionov, Valentin O.
supporting information, p. 76 - 80 (2015/03/05)
A rapid approach to identifying complementary catalytic groups using combinations of functional polymers is presented. Amphiphilic polymers with "clickable" hydrophobic blocks were used to create a library of functional polymers, each bearing a single functionality. The polymers were combined in water, yielding mixed micelles. As the functional groups were colocalized in the hydrophobic microphase, they could act cooperatively, giving rise to new modes of catalysis. The multipolymer "clumps" were screened for catalytic activity, both in the presence and absence of metal ions. A number of catalyst candidates were identified across a wide range of model reaction types. One of the catalytic systems discovered was used to perform a number of preparative-scale syntheses. Our approach provides easy access to a range of enzyme-inspired cooperative catalysts.
Thioboration of α,β-unsaturated ketones and aldehydes toward the synthesis of β-sulfido carbonyl compounds
Civit, Marc G.,Sanz, Xavier,Vogels, Christopher M.,Webb, Jonathan D.,Geier, Stephen J.,Decken, Andreas,Bo, Carles,Westcott, Stephen A.,Fernández, Elena
, p. 2148 - 2154 (2015/05/19)
Herein a direct β-sulfido carbonyl compound synthesis by the easy activation of RS-Bpin reagents with α,β-unsaturated ketones and aldehydes is reported. This convenient methodology can be performed at room temperature with no other additives. The key poin
Bifunctional acid-base ionic liquid for the one-pot synthesis of fine chemicals: Thioethers, 2H-chromenes and 2H-quinoline derivatives
Climent, Maria J.,Iborra, Sara,Sabater, Maria J.,Vidal, Juan D.
, p. 27 - 38 (2014/06/10)
A bifunctional organocatalyst with ionic liquid properties and with an optimized distance between 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 applied for different carbon-carbon (CC) and carbon-heteroatom (C-N, C-O, C-S) bond forming reactions integrated in a cascade sequence. The activity of the organocatalyst has been compared with that of structurally related monofunctional and bifunctional catalysts. The most attractive features of this procedure are the high atom economy and the use of inexpensive starting materials as well as the use of an environmentally friendly catalyst that can be easily recovered due to its ionic liquid properties.
Direct Michael addition to electron-deficient alkenes using diorganyl dichalcogenides (Te/S) and NaBH4/PEG-400
Perin, Gelson,Borges, Elton L.,Peglow, Thiago J.,Lenard?o, Eder J.
supporting information, p. 5652 - 5655 (2014/12/11)
Nucleophilic species of tellurium and sulfur were generated in situ from the reaction of the respective diorganyl dichalcogenides with NaBH4in PEG-400 as solvent and selectively added to electron-deficient alkenes. Chalcogenolate anions were directly added at mild conditions by this simple procedure and in all cases furnished the respective Michael adducts in short reaction times and good yields.
Highly stereoselective anti-Markovnikov hydrothiolation of alkynes and electron-deficient alkenes by a supported Cu-NHC complex
Yang, Yong,Rioux, Robert M.
, p. 3916 - 3925 (2014/08/05)
A practical, efficient, and low-cost heterogeneous catalyst consisting of a Cu-NHC (N-heterocyclic carbene) complex grafted to SBA-15 silica for the catalytic hydrothiolation of alkynes and electron-deficient alkenes under mild reaction conditions has been developed. The heterogeneous catalyst displays higher activity and stereoselectivity to Z-anti-Markovnikov isomers compared with the homogeneous analog under otherwise identical reaction conditions. The catalytic system is applicable to a broad range of alkynes and thiols and is recyclable without significant loss in catalytic performance. High activity and perfect selectivity to alkyl sulfides formed by the addition of electron-deficient alkenes to various thiols catalyzed by the supported Cu-NHC complex were also realized. This journal is the Partner Organisations 2014.
