5-(1-芳基-1-吡咯-2-基)-1氢-四唑类化合物的合成与表征

利用阳极氧化反应, 将一系列N-芳基吡咯电氰化, 区域专一地得到吡咯氰化物2, 分离收率为76%~85%. 将其与叠氮化钠反应, 合成了一系列具有潜在血管紧张素Ⅱ受体(AT)拮抗活性的新型四唑化合物. 该合成路线的原料易得, 并以阳极氰化芳香氮杂环引入氰基为关键步骤, 可作为在芳香氮杂环上引入四唑基团的通用合成路线.     

Microwave-assisted 6π-electrocyclization in water

The recent development of microwave-assisted aqueous synthesis of polyheterocyclic-fused quinoline-2-thiones through 6π-electrocyclization was highlighted.     

Metal-free synthesis of 1,2,3-benzotriazines

The recent molecular iodine catalyzed [1,2]-rearrangement of aryl amines and 3-amino-1H-indazolesfor the synthesis of 1,2,3-benzotriazines is highlighted.     

Uranyl photocatalysis: precisely controlled oxidation of sulfides with ground-state oxygen

正Sulfur-containing organic compounds such as sulfides,sulfoxides and sulfones, have played significant roles in the fields of organic synthesis, pharmaceuticals, and agrochemicals. The selective oxidation of the parent sulfides has been considered as one of the most straightforward methods for the construction of sulfoxides and sulfones. Therefore, a plethora of oxidative systems have been developed for the     

Assembly of (l+d)-Tryptophan Derivatives Containing an Imidazole Group Selectively Forms a Rare Purple Ni2+-Hydrogel

Design of metal-selective hydrogels is attractive due to potential applications in materials and biological sciences. Although much progress has been made, assembly of both l - and d -amino acid derivatives was less explored for design of metallohydrogels. In this study, we synthesized a facile and small tryptophan derivative containing an imidazole ligand with both l - and d - configurations (denoted as l/d -ImW). Intriguingly, the assembly of (l+d) -ImW gelators was found to selectively form a Ni²⁺-hydrogel in aqueous medium at room temperature, which shows a rare purple color and exhibits excellent multi-responsiveness. In addition to insights into the gelation mechanism, this study provides a novel approach to the design of metallohydrogels, by the assembly of (l+d) -amino acid derivatives containing both aromatic rings and multiple metal coordination sites.     

电辅基在有机电合成中的应用

对近年来电辅基在有机电合成中的应用研究概况进行了综述。电辅基共分为两 大类，第一类电辅基是由第四主族的无素参与组成的有机基团，而有机硫基团属于 第二类电辅基。电辅基可以使分子的最高占有轨道（HOMO）的能量升高，促进电子 的传递，从而降低有机底物的氧化电势，使碳原子与电辅基相连化学键选择性地断 裂，同时接受亲核试剂的进攻，使反应的选择性提高。电辅基在今后的有机化学合 成中具有广阔的应用前景。     

逆向案例教学法在普通化学教学中的应用及体会

分析了普通化学课程目前在教学环节所存在的问题,并针对这些问题提出了逆向案例教学法的改革举措。     

讲台与实验台互跨式研究生双语教学模式探索与实践

研究生双语教学是研究生教育国际化进程的必然要求。针对目前研究生双语教学中存在的问题,本文提出了一种新的研究生双语教学模式,即讲台与实验台互跨式研究生双语教学。以生物无机化学研究生双语课程为例,我们探索了讲台与实验台互跨式双语教学的实施方法。实践表明,讲台与实验台互跨式研究生双语教学模式解决了研究生培养中理论与实践相脱节的问题,不但可以全面提高研究生科研素质,而且可以提升教师科研水平。     

A novel mutation operator based on the immunity operation

This paper presents a novel mutation operator based on the immunity operation. Also, the selection is integrated into both crossover and mutation operation. Experiments with our approach on many test functions resulted in near-optimal solutions in all cases. In comparison with several other algorithms, our approach achieved improved accuracy.     

α-含氧取代酞菁的聚集性质研究

以3-硝基邻苯二腈为原料分别与苯酚和甲醇反应合成3-苯氧基邻苯二腈和3-甲氧基邻苯二腈, 这些α-取代的邻苯二腈以二甲氨基乙醇为溶剂, 在有无醋酸锌条件下环合, 分别形成α-四苯氧基锌酞菁、α-四苯氧基无金属酞菁、α-四甲氧基锌酞菁、α-四甲氧基无金属酞菁, 对产物结构进行了表征. 光谱分析结果表明, 此类锌酞菁在氯仿等非配位溶剂中能自发形成J型聚集体, 其Q带出现一个红移吸收带, 经UV-Vis光谱、荧光光谱及MALDI-TOF质谱分析表明, 该聚集体的形成机理为基于酞菁分子间的锌-氧自配位相互作用.