SYNTHESIS OF CHIRAL ISOSQUARAMIDES CONTAINING AMINO ACID
摘要:
Reaction of L- or D-amino acids with bis-N-methyl aniline isosquaramide under basic conditions gave mono amide exchanged products-chiral isosquaramides containing amino acid in satisfactory yields.
We studied the synthesis and electrochemical properties of symmetric squarylium dyes (SQDs) containing diarylamine with various structures. It was shown that several of our synthesized SQDs had improved electrochemical properties and might be a promising and an easy modifiable π-conjugate core block of active materials for electroactive and photoactive devices.
SYNTHESIS OF CHIRAL ISOSQUARAMIDES CONTAINING AMINO ACID
作者:Linsen Heng、Jun Ning、Fanzuo Kong
DOI:10.1081/scc-120013718
日期:2002.1.1
Reaction of L- or D-amino acids with bis-N-methyl aniline isosquaramide under basic conditions gave mono amide exchanged products-chiral isosquaramides containing amino acid in satisfactory yields.
From Squaric Acid Amides (SQAs) to Quinoxaline-Based SQAs─Evolution of a Redox-Active Cathode Material for Organic Polymer Batteries
作者:Marcel E. Baumert、Victoria Le、Po-Hua Su、Yosuke Akae、Dominic Bresser、Patrick Théato、Max M. Hansmann
DOI:10.1021/jacs.3c09153
日期:2023.10.25
candidates for ROMs featuring exceptional stability and high redox potentials. While simple 1,2- and 1,3-squaric acid amides (SQAs), initially reported by Hünig and coworkers decades ago, turned out to exhibit low stability in their radical cation oxidation states, we demonstrate that embedding the nitrogen atoms into a quinoxaline heterocycle leads to robust two-electron SQX redox systems. A series
寻找新的氧化还原活性有机材料(ROM)对于开发可持续能源存储解决方案至关重要。在这项研究中,我们提出了一类新的环丁[ b ]喹喔啉-1,2-二酮或方酸喹喔啉(SQX),作为具有出色稳定性和高氧化还原电位的ROM的极有前途的候选者。虽然简单的 1,2- 和 1,3-方酰胺 (SQA) 最初由 Hünig 及其同事几十年前报道,结果证明其自由基阳离子氧化态稳定性较低,但我们证明将氮原子嵌入喹喔啉中杂环导致强大的双电子 SQX 氧化还原系统。制备了一系列 SQX 化合物及其相应的自由基阳离子,并对其进行了充分表征,包括 EPR 光谱、紫外可见光谱和 X 射线衍射。基于新型 ROM 的良好电化学性能和高稳定性,我们开发了 SQX 功能化聚合物,并研究了它们在储能应用中的物理和电化学性能。这些聚合物在远高于 200 °C 时表现出卓越的热稳定性,具有可逆氧化还原特性,相对于 Li + /Li 的电势约为