Environmentally Friendly and Recyclable CuCl2-Mediated C–S Bond Coupling Strategy Using DMEDA as Ligand, Base, and Solvent
作者:Guodong Shen、Xianqiang Huang、Qichao Lu、Zeyou Wang、Weiwei Sun、Yalin Zhang、Manman Sun、Zhiming Wang
DOI:10.1055/a-1561-5508
日期:2022.1
Simple reaction conditions and recyclable reagents are crucial for environmentally friendly industrial applications. An environment-friendly, recyclable and economic strategy was developed to synthesize diaryl chalcogenides by the CuCl2-catalyzed C–S bond-formation reaction via iodobenzenes and benzenethiols/1,2-diphenyldisulfanes using N,N′-dimethylethane-1,2-diamine (DMEDA) as ligand, base, and solvent
Direct Carbocyclizations of Benzoic Acids: Catalyst-Controlled Synthesis of Cyclic Ketones and the Development of Tandem aHH (acyl Heck-Heck) Reactions
作者:Kelsey C. Miles、Chi “Chip” Le、James P. Stambuli
DOI:10.1002/chem.201403561
日期:2014.9.1
The formation of exo‐methylene indanones and indenones from simple ortho‐allyl benzoic acid derivatives has been developed. Selective formation of the indanone or indenone products in these reactions is controlled by choice of ancillary ligand. This new process has a low environmental footprint as the products are formed in high yields using low catalyst loadings, while the only stoichiometric chemical
Palladium‐Catalyzed Asymmetric Intramolecular Reductive Heck Desymmetrization of Cyclopentenes: Access to Chiral Bicyclo[3.2.1]octanes
作者:Zhenbo Yuan、Ziwen Feng、Yuye Zeng、Xiaobin Zhao、Aijun Lin、Hequan Yao
DOI:10.1002/anie.201900059
日期:2019.2.25
atoms, has been realized for the first time. A series of optically active bicyclo[3.2.1]octanes bearing chiral quaternary and tertiary carbon stereocenters were obtained in good yields with excellent enantioselectivities, exhibiting good functional‐group tolerance and scalability. Moreover, deuterated optically active bicyclo[3.2.1]octanes were also obtained in high efficiency.
Herein, we report the unprecedented use of a heterogeneous palladium catalyst for the step-economical Catellani reaction.
在此,我们报告了异质钯催化剂在步骤经济的Catellani反应中的史无前例的应用。
Ultrasound assisted Cu-catalyzed Ullmann-Goldberg type coupling-cyclization in a single pot: Synthesis and in silico evaluation of 11H-pyrido[2,1-b]quinazolin-11-ones against SARS-CoV-2 RdRp
作者:Matta Manikanttha、Kolli Deepti、Mandava Bhuvan Tej、Mandava Bhagya Tej、A. Gopi Reddy、Ravikumar Kapavarapu、Deepak Kumar Barange、M. V Basaveswara Rao、Manojit Pal
DOI:10.1016/j.molstruc.2023.135044
日期:2023.5
The in silico evaluation of 11H-pyrido[2,1-b]quinazolin-11-one derivatives against SARS-CoV-2 RdRp was undertaken based on the reports on antiviral activities of this class of compounds in addition to the promising interactions of the antiviral drug penciclovir as well as quinazoline derivatives with SARS-CoV-2 RdRp in silico. The target compounds were prepared via an Ullmann–Goldberg type coupling
11 H- pyrido[2,1- b ]quinazolin-11-one 衍生物抗 SARS-CoV-2 RdRp 的计算机评价是根据此类化合物的抗病毒活性报告以及抗病毒药物喷昔洛韦以及喹唑啉衍生物与 SARS-CoV-2 RdRp in silico。目标化合物通过Ullmann-Goldberg 型偶联,随后在单个罐中进行环化(涉及酰胺化)。该方法涉及 2-碘苯甲酸酯与 2-氨基吡啶或喹啉-2-胺或噻唑-2-胺在超声下的 CuI 催化反应,以可接受的 (51–93%) 收率生成预期产物。在计算机上评估了合成的 11 H-吡啶并[2,1 - b ]喹唑啉-11-酮衍生物与 SARS-CoV-2 RdRp (PDB: 7AAP)的分子相互作用。该研究表明,尽管这些化合物中没有一种显示出比喷昔洛韦更好的相互作用,但化合物3a和3n似乎与3b具有可比性似乎几乎可以与 favipiravir