Carboxyboronate as a Versatile In Situ CO Surrogate in Palladium‐Catalyzed Carbonylative Transformations
作者:Chieh‐Hung Tien、Alina Trofimova、Aleksandra Holownia、Branden S. Kwak、Reed T. Larson、Andrei K. Yudin
DOI:10.1002/anie.202010211
日期:2021.2.19
highlighted in the palladium‐catalyzed aminocarbonylation, alkoxycarbonylation, carbonylative Sonogashira coupling, and carbonylative Suzuki–Miyaura coupling of aryl halides. A variety of amides, esters, (hetero)aromatic ynones, and bis(hetero)arylketones were synthesized in good‐to‐excellent yields in a one‐pot fashion.
The title compound has been shown to rearrange under the influence of anhydrous aluminium bromide in homogeneous solution in chlorobenzene. The products are similar to those obtained in the rearrangement, under analogous conditions, of phenyl benzoate, except that migration to the para-position in the case of the title ester has not been established. The relevance of the results obtained to the problem
Pd-Catalyzed Suzuki-Miyaura Cross-Coupling of Arylboronic Acids and α-Iminonitriles through C-CN Bond Activation
作者:Kui Liu、Shou-Wei Tao、Chun Qian、Yong-Ming Zhu
DOI:10.1002/ejoc.201800857
日期:2018.9.16
A valuable method for the Pd‐catalyzed Suzuki–Miyaura cross‐coupling of arylboronicacids has been developed, using α‐iminonitriles to replace acylnitriles. The reaction proceeds through selective activation of the C–CNbond, and avoids the “decarbonylation” side reaction of acylnitriles after activation.
Aromaticketones were efficiently prepared in good yields by the reactions of aryl bromides with n-BuLi, followed by the reactions with aromaticaldehydes or aliphatic aldehydes and the subsequent treatment with molecular iodine and K2CO3, in a one-pot method. The same treatment of arenes, instead of aromatic bromides, also provided the corresponding aromaticketones in good yields. Using these methods
通过一锅法,通过芳基溴化物与n- BuLi的反应,然后与芳族醛或脂族醛的反应,以及随后用分子碘和K 2 CO 3的处理,可以有效地以高收率高效地制备芳族酮。芳烃的相同处理而不是芳族溴化物也以良好的产率提供了相应的芳族酮。使用这些方法,可以通过简单,无过渡金属且因此对环境无害的实验程序有效地制备各种带有富电子芳族化合物和缺电子芳族化合物的二芳基酮和烷基芳基酮。
Mercapto Benzophenone Compounds, Compositions and Preparation Method Thereof
申请人:Insight High Technology (Beijing) Co. Ltd.
公开号:US20130150479A1
公开(公告)日:2013-06-13
The present invention provides a photocurable composition prepared using mercapto benzophenone compounds as key raw materials. The present invention aims to solve the problems existing in the prior photo-curing technology that low-molecular photoinitiators are easy to remain and migrate, while macromolecular photoinitiators has low initiation efficiency due to a low content of effective components and also has the problem of certain migration. The photocurable composition in the present invention can be easily prepared and has high addition efficiency with ethylenically unsaturated compounds, and the photocurable composition obtained by addition has no residual mercapto and has features of high initiation activity and zero migration rates when it is used in photocurable coatings, binder and ink formula.