Base‐Assisted Imidization: A Synthetic Method for the Introduction of Bulky Imide Substituents to Control Packing and Optical Properties of Naphthalene and Perylene Imides
suggest an isoimide as intermediary product, which was converted to the corresponding imide upon addition of an aqueous base. Single‐crystal X‐ray diffraction analyses reveal dimeric packing motifs for monoimides, while two‐side shielded bisimides crystallize in isolated molecules without close π–π‐interactions. Spectroscopic investigations disclose the influence of the bulky substituents on the optical properties
METHOD FOR PRODUCING ALPHA-HYDROXY KETONE COMPOUND
申请人:Hagiya Koji
公开号:US20140235867A1
公开(公告)日:2014-08-21
The present invention relates to a specific thiazolium salt used for producing an α-hydroxy ketone compound, and a method for producing an α-hydroxy ketone compound by carrying out a coupling reaction of an aldehyde compound in the presence of a base compound and the specific thiazolium salt.
[EN] METHOD FOR PRODUCING ALPHA - HYDROXY KETONE COMPOUND<br/>[FR] PROCÉDÉ DE FABRICATION D'UN COMPOSÉ ALPHA-HYDROXY CÉTONE
申请人:SUMITOMO CHEMICAL CO
公开号:WO2013035650A9
公开(公告)日:2014-03-13
10.1021/jacs.4c05180
作者:Kim, Dooyoung、Teets, Thomas S.
DOI:10.1021/jacs.4c05180
日期:——
= −2.4 V vs Fc+/0) and long lifetime of Cu3 lead to higher yields in photoredox and photocatalytic isomerization reactions, which include dehalogenation and/or hydrodgenation of benzophenone substrates, C–O bond activation of a lignin model substrate, and photocatalytic E/Zisomerization of stilbene.
铜(I)配合物是替代贵金属光敏剂的重要候选者。我们最近引入了铜(I)电荷转移发色团的三配位设计,将 β-二酮亚胺配体与芳基异氰化物配对。这些化合物的激发态寿命可以使用双发色团“三重态储库”策略来延长,但代价是激发态能量和功率的降低。在这项工作中,我们引入了一种互补的空间驱动策略来增加这些光敏剂的激发态寿命,与双发色团方法相比,它提供了更高的能量,更强烈地减少电荷转移三重态。所呈现的化合物 (Cu1–Cu4) 具有通式 Cu(CyNacNac Me )(CN-Ar),其中 CyNacNac Me 是环己基取代的 β-二酮亚胺和 CN-Ar是一种具有可变空间分布的芳基异氰化物。描述了它们的结构特征以及电化学和光物理性质。与母体 2,6-二甲基苯基异氰化物化合物 Cu1 相比,具有空间阻碍的 2,6-二异丙基苯基或间三联苯异氰化物配体 (Cu2–Cu4) 的配合物表现出更长的激发态寿命。具体来说,一种间三联苯异氰化物化合物