2024年2月1日 · DPZ-mediated photoredox catalysis may involve reductive quench cycle with either one or two PET processes and DPZ as oxidant or reductant. This principal outcome would pave the way for further DPZ’s applications across various chemical transformations.

2024年4月2日 · The redox cycle begins with the reductive quenching of *DPZ by 100 that interacts with C1 through hydrogen bonding, and the resulting radicals 101 undergo the addition to olefins, producing ...

2024年1月17日 · With the aforementioned information in hand, we subsequently conducted Stern–Volmer experiments to investigate the rational photoredox catalytic cycle. As a result, no measureable fluorescence quenching of *DPZ by 1,2-diphenylprop-2-en-1-one ( 1a ) or isoquinoline-1-carbonitrile ( 2a ) in the absence and presence of chiral acid C1 was observed.

the redox cycle and allows for precise access to valuable enantioenriched ... tested using 1.0 mol% DPZ at 25 °C in toluene under irradiation with a 3 W blue LED, but no reaction was observed ...

可见光有机光氧化还原催化已成为有机合成转化的宝贵工具，因为它与有机底物协同工作，并且已知为有机转化创造独特的化学环境。二氰基吡嗪 (dpz) 是一种研究相对较少的有机光氧化还原催化剂，通过其在有机合成中的催化活性显示出巨大的潜力，需要合成界的关注。

2021年9月2日 · Visible light organophotoredox catalysis has emerged as an invaluable tool for organic synthetic transformations since it works brilliantly in tandem with organic substrates and has been known to create unique chemical environment for organic transformations. Dicyanopyrazine (DPZ), a relatively lesser researched organophotoredox catalyst, has shown great potential through its catalytic ...

2024年4月2日 · 首先*dpz发生还原淬灭将100的单电子氧化，并且产生的自由基101，通过自由基加成产生中间体102。 随后*DPZ与 102 发生三线态能量转移提供激发态化合物 103 ，其使得DPZ•–通过氧化再生基态DPZ来关闭光氧化还原催化循环，其被还原为 104 。

2017年10月17日 · 如图 2 所示，作者以苯基取代的二酮化合物 1a 为底物，以 DPZ 作为可见光催化剂，以三级胺作碱，蓝灯照射下，对反应条件进行了筛选，发现使用手性胍盐作为布朗斯特酸催化剂克服了该反应中非手性背景反应强、产物易于消旋等难点，成功发展了高立体选择性 ...

2019年4月26日 · 尤为重要的是，他们建立了DPZ与手性膦酸协同不对称催化体系，发展了自由基型共轭加成-质子化途径，通过手性膦酸与氮杂芳烃碱性氮原子的氢键相互作用，实现了在氮杂芳烃α位构建手性中心，高反应活性与立体选择性充分体现了该催化体系对于构筑氮杂芳烃 ...

DPZ 5 also possesses one of the most positive E T (βHOMO), which further hindered efficient SET from the substrate. Considering the structure of the most active catalysts, it seems that the presence of peripheral OMe/SMe groups ( 1 , 12 , and 6 ), thiophene moiety ( 9 ) or sulfidic linker ( 6 are 12 ) is the most crucial factor affecting their ...