decarbonylative cyanation of acyl chlorides with trimethylsilylcyanide has been achieved. This transformation is applicable to the synthesis of an array of nitrile compounds bearing a wide range of functional groups under neutral conditions. The step-by-step experimental studies revealed that the reaction sequences of the present catalytic reaction are oxidative addition, transmetalation, decarbonylation
Substituted 2-phenyl-benzimidazole derivatives: novel compounds that suppress key markers of allergy
作者:Mark L. Richards、Shirley Cruz Lio、Anjana Sinha、Homayon Banie、Richard J. Thomas、Michael Major、Mark Tanji、Jagadish C. Sircar
DOI:10.1016/j.ejmech.2006.03.014
日期:2006.8
identified and extended a novel family of 2-(substituted phenyl)-benzimidazole inhibitors of IgE response. Pharmacological activity depends on an intact phenylbenzimidazole-bis-amide backbone, and is optimized by the presence of lipophilic terminal groups composed of either bis cycloalkyl or combinations of aliphatic and halogen-substituted aromatic groups. These compounds also inhibit IL-4 and IL-5 responses
Iron-catalyzed carbonylative cyclization of γ,δ-unsaturated aromatic oxime esters to functionalized pyrrolines
作者:Youcan Zhang、Zhiping Yin、Hai Wang、Xiao-Feng Wu
DOI:10.1039/d0cc02784g
日期:——
Herein, a new method of iron-catalyzed carbonylative cyclization of γ,δ-unsaturated aromatic oxime esters to functionalized pyrrolines has been developed. By using readily available substrates, 32 examples of functionalized pyrrolines were prepared in moderate to good yields. Notably, examples of reduction and cycloaddition reactions of the obtained product were given as well.
Synthesis of Chiral 1,3-Diketones from the Coupling Reaction of (+)-3.ALPHA.-Bromocamphor with Acyl Chlorides in the Presence of Samarium Diiodide.
作者:Han-Xun WEI、Zhi-Min WANG、Min SHI
DOI:10.1248/cpb.47.909
日期:——
Some hindered chiral 1, 3-diketones were successfully synthesized from the reaction of (+)-3α-bromocamphor with acyl chlorides in the presence of samarium diiodide (SmI2) under mild reaction conditions in high yields.
Ligand-Promoted <i>meta</i>-C–H Amination and Alkynylation
作者:Peng Wang、Gen-Cheng Li、Pankaj Jain、Marcus E. Farmer、Jian He、Peng-Xiang Shen、Jin-Quan Yu
DOI:10.1021/jacs.6b08942
日期:2016.10.26
Using a modified norbornene (methyl bicyclo[2.2.1]hept-2-ene-2-carboxylate) as a transient mediator, meta-C-H amination and meta-C-H alkynylation of aniline and phenol substrates have been developed for the first time. Both the identification of a monoprotected 3-amino-2-hydroxypyridine/pyridone-type ligand and the use of a modified norbornene as a mediator are crucial for the realization of these