Vicinal Diboration of Alkyl Bromides via Tandem Catalysis
作者:Xiao-Xu Wang、Lei Li、Tian-Jun Gong、Bin Xiao、Xi Lu、Yao Fu
DOI:10.1021/acs.orglett.9b01481
日期:2019.6.7
Vicinal diboration of alkylbromides via tandem catalysis is reported. The reported reaction exhibits a broad substrate scope, good functional group compatibility, and regioselectivity. Moreover, it shows good practicality due to the easy accessibility of alkylbromides in combination with diverse transformations of diboronates. Mechanism study indicates that terminal alkenes are generated selectively
Diagnostic fragmentations of adducts formed between carbanions and carbon disulfide in the gas phase. A joint experimental and theoretical study
作者:Micheal J. Maclean、Scott Walker、Tianfang Wang、Peter C. H. Eichinger、Patrick J. Sherman、John H. Bowie
DOI:10.1039/b916477d
日期:——
react with carbondisulfide in a modified LCQ ion trap mass spectrometer to form adducts, which when collisionally activated, decompose by processes which in some cases identify the structures of the original carbanions. For example (i) C6H5− + CS2→ C6H5CS2−→ C6H5S− + CS, occurs through a 3-membered ring ipso transition state, and (ii) the reaction between C6H5CH2− and CS2 gives an adduct which loses
Nickel‐Catalyzed Electrochemical Reductive Relay Cross‐Coupling of Alkyl Halides to Aryl Halides
作者:Ke‐Jin Jiao、Dong Liu、Hong‐Xing Ma、Hui Qiu、Ping Fang、Tian‐Sheng Mei
DOI:10.1002/anie.201912753
日期:2020.4.16
A highly regioselective Ni-catalyzed electrochemical reductive relay cross-coupling between an aryl halide and an alkylhalide has been developed in an undivided cell. Various functional groups are tolerated under these mild reaction conditions, which provides an alternative approach for the synthesis of 1,1-diarylalkanes.
reagents, namely, dn-alkyl sulfonium salts, dn-alkyl halides, a dn-alkyl azide, and a dn-alkyl amine, were prepared and used to efficiently introduce dn-alkyl groups into drug candidates and their analogues with complex skeletons. A liver microsomal metabolism study using 7-(d2-ethoxy)flavone as a model compound revealed a significant deuterium kinetic isotopeeffect due to the installed d2-ethoxy group
制备了多种氘化试剂,即dn-烷基锍盐、 dn-烷基卤化物、 dn-烷基叠氮化物和dn-烷基胺,并用于有效地将dn-烷基引入候选药物中,并它们的类似物具有复杂的骨架。使用 7-( d 2 -乙氧基)黄酮作为模型化合物进行的肝微粒体代谢研究表明,由于安装了d 2 -乙氧基,因此具有显着的氘动力学同位素效应。
β‐C−H Allylation of Trialkylamines with Allenes Promoted by Synergistic Borane/Palladium Catalysis
作者:Ming Zhang、Zi‐Lu Tang、Heng Luo、Xiao‐Chen Wang
DOI:10.1002/anie.202317610
日期:2024.1.25
The β-C−H allylation reactions of trialkylamines with allenes were accomplished by a synergistic borane/palladium catalysis. The borane and palladium catalysts promoted the formation of an enamine intermediate from a trialkylamine and a palladium-π-allyl intermediate from an allene, respectively.