1155-51-7Relevant articles and documents
Practical and efficient recyclable oxidative system for the preparation of symmetrical disulfides under aerobic conditions
Ling, Ong Chiu,Heidelberg, Thorsten,Ching, Juan Joon,Khaligh, Nader Ghaffari
, p. 281 - 294 (2021)
An efficient and practical oxidative coupling of thiols to symmetrical disulfides is developed at room temperature under aerobic conditions. The commercially available sodium methoxide solution 30 wt. % in methanol together with the air was used as a retrievable promoter system and green oxidant, respectively, for the preparation of symmetrical disulfides. The desired products were obtained in good to high yields by an economical procedure. No overoxidation of the symmetrical disulfides was observed, and various functional groups were well tolerated in the current protocol. Moreover, the new reagent reduces the generation of hazardous waste due to its high reusability. The reaction proceeded in the absence of light, and it was not inhibited by TEMPO. Also, the low yield of TEMPO-benzyl thiol adduct was detected under these conditions. Based on our experiments, a possible mechanism was proposed in the absence and presence of TEMPO.
Bifunctional Chalcogen Linkers for the Stepwise Generation of Multimetallic Assemblies and Functionalized Nanoparticles
Robson, Jonathan A.,Gonzàlez De Rivera, Ferran,Jantan, Khairil A.,Wenzel, Margot N.,White, Andrew J. P.,Rossell, Oriol,Wilton-Ely, James D. E. T.
, p. 12982 - 12996 (2016)
The disulfide ligand (SC6H4CO2H-4)2 acts as a simple but versatile linker for a range of group 8 transition metals through reaction of the oxygen donors. This leads to a range of homobimetallic ruthenium and osm
Enzymatic thiol Michael addition using laccases: Multiple C-S bond formation between p-hydroquinones and aromatic thiols
Schlippert, Max,Mikolasch, Annett,Hahn, Veronika,Schauer, Frieder
, p. 106 - 114 (2016)
Laccases create C-C, C-O or C-N bonds and have been investigated intensively as catalysts for green chemistry and white biotechnology. However, little is known about C-S bond formation in laccase-catalyzed reactions. We have used the laccases from Pycnopo
Highly sensitive SERS quantification of the oncogenic protein c-Jun in cellular extracts
Guerrini, Luca,Pazos, Elena,Penas, Cristina,Vazquez, M. Eugenio,Mascarenas, Jose Luis,Alvarez-Puebla, Ramon A.
, p. 10314 - 10317 (2013)
A surface-enhanced Raman scattering (SERS)-based sensor was developed for the detection of the oncoprotein c-Jun at nanomolar levels. c-Jun is a member of the bZIP (basic zipper) family of dimeric transcriptional activators, and its overexpression has bee
Solid phase synthesis of bicyclic pyrrolidines
Quadrelli, Paolo
, (2021/11/17)
The preparation of bicyclic pyrrolidines, stable and easy to isolate, is performed through both classical solution chemistry and on solid support. A new linker strategy is presented based on the concept of REM resin approach. Starting from a suitably derivatized Wang's resin, the linker can be REgenerated after cleavage of the product and functionalized to start a new synthetic cycle via a Michael reaction. In the present work a vinyl sulfone supported on a Wang's resin is able to undergo a Michael reaction with an amino acid derivative; the obtained adduct serves as a precursor for azomethine ylide generation, which is conveniently trapped with N-methyl-maleimide. The results are presented and discussed in the light of the experimental conditions applied as well as the method chosen for the cleavage of the product and resin regeneration.
Silane, rubber mixture containing the silane and vehicle tyre having the rubber mixture in at least one component
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Page/Page column 15-16, (2020/12/21)
The invention relates to a silane, to a rubber mixture comprising the silane and to a vehicle tire comprising the rubber mixture in at least one component. The inventive silane has the following formula I) [in-line-formulae](R1)oSi—R2—X-A-Y-[A-Y-]m-A-Sk-A-[-Y-A]mY-A-X—R2—Si(R1)o,[/in-line-formulae] wherein, according to the invention, the silane has spacer groups between the respective silyl groups and the Sk moiety which have at least two aromatic groups A and the linking units X and Y, wherein the groups X within a molecule may be identical or different from each other and are selected from the groups —HNC(═O)—, —C(═O)NH—, —C(═O)O—, —OC(═O)—, —OC(═O)NH—, —HNC(═O)O—, —R3NC(═O)NR3—, —R3NC(═NR3)NR3—, —R3NC(═S)NR3—, wherein at least one R3 within each group X is a hydrogen atom; and wherein the groups Y within a molecule may be identical or different from each other and are selected from the groups —HNC(═O)—, —C(═O)NH—, —C(═O)O—, —OC(═O)—, —OC(═O)NH—,—HNC(═O)O—, —R4NC(═O)NR4—, —R4NC(═NR4)NR4—, —R4NC(═S)NR4—, wherein at least one R4 within each group Y is a hydrogen atom. The inventive rubber mixture comprises at least one inventive silane.
