[EN] FORCE-RESPONSIVE POLYMERSOMES AND NANOREACTORS; PROCESSES UTILIZING THE SAME<br/>[FR] POLYMERSOMES ET NANORÉACTEURS SENSIBLES À LA FORCE; PROCÉDÉS LES UTILISANT
申请人:ADOLPHE MERKLE INSTITUTE UNIV OF FRIBOURG
公开号:WO2019034597A1
公开(公告)日:2019-02-21
The mechanically induced melting properties of DNA were employed to achieve force labile membranes is described. Nucleobase pairs were used as mechanophores. Adenine and thymine functionalized complementary amphiphilic block copolymers were self-assembled into polymersomes. The nucleobases formed hydrogen bonds which were disrupted upon force stimulation. The exposure of the disconnected nucleobases to the hydrophobic matrix of the membranes lead to a change of permeability which permitted the exchange of water-soluble molecules throughout the polymer matrix. Moreover, the encapsulation of horseradish peroxidase enabled the reaction of luminol with hydrogen peroxide to yield a luminescence producing species similar to the marine bioluminescence. Moreover, the same nano-reactors were employed to catalyze the formation of a polyacrylamide gel when force was applied. Insights into the change of permeability of supramolecular networks upon force are provided. These systems are useful for drug delivery, as nanoreactors and for the selective release of curing agents for 3D printing, or fragrances.
Condensation du cyanoacetate d'éthyle sodé sur les sels d'iminoethers cycliques synthese directe de dérivés d'oxazepine-1,4 one-7
作者:M. Dreme、S. Brunel、M.F. Llauro、P. Le Perchec、J. Garapon、B. Sillion
DOI:10.1016/s0040-4020(01)91181-0
日期:1984.1
found to react exclusively at the 2-position of trifluoromethanesulfonate 2-alkyl(aryl) 1,3-oxazolinium salts 2. In most cases, the reaction leads specifically to a new series of 5-alkyl(aryl) 6-cyano 2,3-dihydro 1,4-oxazepine 7-ones 3. This efficient one-step ring-enlargement process occurs at the oxazolidine stage. Structural parameters affecting the scope and limitations of this condensation are discussed
[EN] PROCESS FOR THE PREPARATION OF N-PROTECTED-DECYLAMINOETHANAL<br/>[FR] PROCÉDÉ DE FABRICATION DE DÉCYLAMINOÉTHANAL N-PROTÉGÉ
申请人:PLUS CHEMICALS SA
公开号:WO2011005959A1
公开(公告)日:2011-01-13
Compounds useful in the preparation of telavancin, for example, were prepared. These compounds include decylaminoethanal dialkyl acetals and N-protected decylaminoethanal dialkyl acetals, imidazolidine derivatives, and N-protected- decylaminoethanal.
Microwave-Assisted Syntheses in Recyclable Ionic Liquids: Photoresists Based on Renewable Resources
作者:Charlotte Petit、Klaus P. Luef、Matthias Edler、Thomas Griesser、Jennifer M. Kremsner、Alexander Stadler、Bruno Grassl、Stéphanie Reynaud、Frank Wiesbrock
DOI:10.1002/cssc.201500847
日期:2015.10
Dc=Ox in the ionicliquid n‐hexyl methylimidazolium tetrafluoroborate under microwave irradiation in 250 g/batch quantities. The polymer precipitates upon cooling, enabling easy recovery of the polymer and the ionicliquid. Both monomers can be obtained from fatty acids from renewableresources. pNonOx80‐stat‐pDc=Ox20 can be used as polymer in a photoresist (resolution of 1 μm) based on UV‐induced
共聚(2-恶唑啉)pNonOx 80 - STAT -pDc =牛20可以由2-壬基-2-恶唑啉NonOx的阳离子开环共聚,来合成2-癸9'-烯基-2-恶唑啉直流=微波辐射下离子液体四氟硼酸正己基甲基咪唑鎓中的氧含量为250 g /批。聚合物在冷却时沉淀,使聚合物和离子液体易于回收。两种单体都可以从可再生资源的脂肪酸中获得。pNonOx 80 - STAT -pDc =牛20 可以基于紫外线诱导的硫醇-烯反应,用作光刻胶中的聚合物(分辨率为1μm)。
Side-chain electrophilic aromatic substitution in 2-alkyloxa- and 2-alkylthiazolines initiated via σ-complex formation with super-electrophilic DNBF: a model proinsecticideElectronic supplementary information (ESI) available: the ABX analysis of the CH2-α and H2 proton region of the adduct 5-Oa. See http://www.rsc.org/suppdata/p2/b2/b201045n/
A 1H and 13C NMR study of the reaction of a series of 2-alkyloxa- and 2-alkylthiazolines 3-Xaâc with 4,6-dinitrobenzofuroxan (DNBF) in DMSO revealed the formation of the C-bonded Ï-adducts 5-Xaâc. Product isolation following addition of Et3N or KOAc, afforded the Et3NH+ or K+ salts of the DNBF adducts, respectively. The NMR results showed conclusively that coupling of the DNBF moiety with the oxazoline or thiazoline heterocycle occurred at the α position of the 2-alkyl side-chain. A most reasonable mechanism for this coupling involves initial formation of a transient N-bonded adduct between the N-heterocycle and DNBF, which subsequently rearranges through the action of base to the C-bonded adduct as the product of thermodynamic control. The relevance of this work to oxa- and thiazoline-based proinsecticide is emphasized.