carbonates through the cycloaddition of CO2 to epoxides in the absence of co-catalyst and solvent. Propyleneoxide conversion was near completion at 130 °C and 2.5 MPa in 2 h when [TMGC2H4NH2]Br was used as catalyst. The effects of functional groups and counter anions on catalytic performance were investigated. The synergistic effect of polarization by hydrogen bonding and the nucleophilic attack by bromide
通过一种简单的方法制备了一系列同时含有路易斯酸和碱性位点的功能性胍基离子液体(FGBIL),并用作在不存在co的情况下通过将CO 2环化成环氧化物来合成环状碳酸酯的催化剂-催化剂和溶剂。当[TMGC 2 H 4 NH 2] Br用作催化剂。研究了官能团和抗衡阴离子对催化性能的影响。氢键极化和溴化物阴离子的亲核攻击的协同作用解释了环氧化物的容易开环。此外,该方案适用于各种末端环氧化物,可以高产率和选择性地生产相应的环状碳酸酯。设想使用单一催化剂的无金属和无溶剂方法具有大规模固定CO 2的潜力。
New ionic liquids based on 5-fluorouracil: Tuning of BSA binding and cytotoxicity
作者:Artashes A. Khachatrian、Timur A. Mukhametzyanov、Ramazan Z. Salikhov、Alexandra E. Klimova、Zufar N. Gafurov、Artyom O. Kantyukov、Dmitry G. Yakhvarov、Bulat F. Garifullin、Diana A. Mironova、Alexandra D. Voloshina、Boris N. Solomonov
DOI:10.1016/j.ijbiomac.2023.128642
日期:2024.2
work, we describe the synthesis, interactions with bovine serum albumin, and cytotoxicity of new ionic liquids based on 5-fluorouracil (API-ILs) with different cations (imidazolium, choline, isoquinolinium, guanidinium). The secondary and tertiary structure of BSA in solutions with different concentrations of API-ILs was monitored by the circular dichroism (CD) technique. The addition of API-ILs does not