Synthesis and radical polymerisation of methacrylic monomers with crown ethers or their dipodal counterparts in the pendant structure
摘要:
The synthesis and radical polymerisation of methacrylic monomers with benzo-12-crown-4, benzo-15-crown-5, benzo-18-crown-6, and their dipodal counterparts in the ester residue is described. The radical polymerisation of the monomers in solution was carried out at different temperatures, and the polymerisation kinetics curves were obtained by direct measurement of the instantaneous monomer concentrations by nuclear magnetic resonance spectroscopy (NMR). Thus, the polymerisation rate parameter (2fk(p)/(k(t))(1/2)), along with the polymer stereoregularity, were obtained in terms of the molar fractions of meso and racemo diads and of syndiotactic, isotactic and heterotactic triads. The interaction of the polymers with cations was studied using polymer networks as solid phases in the solid-liquid extraction of lanthanide cations from both organic and aqueous media. (C) 2011 Elsevier Ltd. All rights reserved.
Evaluation of an Intramolecular Approach for the Synthesis of the Elusive C<sub>58</sub>N<sub>2</sub>Heterofullerene Family
作者:Max von Delius、Frank Hauke、Andreas Hirsch
DOI:10.1002/ejoc.200800423
日期:2008.8
A new approach towards the synthesis of the elusive heterofullerene C58N2 is presented. The syntheticstrategy is based on the intramolecular 1,3-dipolar cycloaddition of a spacer-linked azide to a monoazaheterofullerene (C59N) core. Since this cycloaddition can theoretically result in 16 different isomeric products, the design of the spacer moiety was based on extensive molecular modelling. Two fundamental
[EN] DEGRADATION OF BRUTON'S TYROSINE KINASE (BTK) BY CONJUGATION OF BTK INIDBITORS WITH E3 LIGASE LIGAND AND METHODS OF USE<br/>[FR] DÉGRADATION DE LA TYROSINE KINASE DE BRUTON (BTK) PAR CONJUGAISON D'INHIBITEURS DE BTK AVEC UN LIGAND DE LIGASE E3 ET PROCÉDÉS D'UTILISATION
申请人:BEIGENE LTD
公开号:WO2021018018A1
公开(公告)日:2021-02-04
Disclosed herein are novel bifunctional compounds formed by conjugating BTK inhibitor moieties with E3 ligase Ligand moieties, which function to recruit targeted proteins to E3 ubiquitin ligase for degradation, and methods of preparation and uses thereof.
A first porphyrin liquid crystal with strong fluorescence in both solution and aggregated states based on the AIE-FRET effect
作者:Hongyu Guo、Sining Zheng、Shibin Chen、Chenyang Han、Fafu Yang
DOI:10.1039/c9sm01174a
日期:——
periphery was designed and synthesized as an excellent near-infrared-emissive liquid crystalline material in both solution and aggregated states, which was first observed for porphyrin liquidcrystals. It exhibited a high self-assembly ability with the ordered hexagonal columnar mesophase between 70 and 120 °C approximately. The strong AIE-FRET effect was produced based on the overlap of the emission
Two shape‐persistent star mesogens with oligo(phenylene ethenylene) arms and a phthalocyanine core—one providing free space (2) and one sterically encumbered by four fullerenes attached through spacers (3)—have been successfully synthesized. In contrast to the smaller discotic derivative 1, mesogen 2 forms a columnar liquidcrystal (LC), which can only be partially aligned without π‐stacking, while
On the Importance of the Nature of Hydrogen Bond Donors in Multiple Hydrogen Bond Systems
作者:Jörg Taubitz、Ulrich Lüning
DOI:10.1002/ejoc.200800589
日期:2008.12
Association constants for the reaction between a fourfold hydrogenbond receptor 4 possessing an AADA hydrogenbond pattern and several complementary partners 5–7 with DDAD and DDA patterns have been determined by NMR titration and by isothermal titration calorimetry (ITC). A variation of one donor site in the DDAD pattern resulted in the following, surprising sequence of stability of the complexes: