Copper-Mediated C–N Coupling of Arylsilanes with Nitrogen Nucleophiles
作者:Johannes Morstein、Eric D. Kalkman、Chen Cheng、John F. Hartwig
DOI:10.1021/acs.orglett.6b02543
日期:2016.10.21
A method for the oxidative coupling of arylsilanes with nitrogen nucleophiles is reported. This method occurs with a broad range of heptamethyltrisiloxylarenes and nitrogen nucleophiles, proceeds with the arylsilane as limiting reagent, and does not require a fluoride activator with electron-poor arylsilanes. The combination of this method with C–H silylation generates arylamines from unactivated arenes
Selective Copper-Catalyzed N-Arylation of Lactams with Arylboronic Acids under Base- and Ligand-Free Conditions
作者:Bojja Sreedhar、Thulasiram Bathini、Vikas Rawat
DOI:10.1055/s-0034-1380741
日期:——
An oxidative copper-catalyzed cross-coupling of arylboronic acids with various ring-size lactams has been developed. The N-arylated lactams were obtained in moderate to excellent yields without any additional bases, ligands, or additives. This reaction shows complete selectivity for N-arylation of lactams in the presence of a hydroxyl group.
SUBSTITUTED PYRROLIDINONE, THIAZOLIDINONE OR OXAZOLIDINONE AS HERBICIDES
申请人:Syngenta Limited
公开号:EP1119547A1
公开(公告)日:2001-08-01
[EN] SUBSTITUTED PYRROLIDINONE, THIAZOLIDINONE OR OXAZOLIDINONE AS HERBICIDES<br/>[FR] PYRROLIDINONE, THIAZOLIDINONE OU OXAZOLIDINONE SUBSTITUEE UTILISEE EN TANT QU'HERBICIDES
申请人:ZENECA LTD
公开号:WO2000021928A1
公开(公告)日:2000-04-20
A compound of general formula (I) wherein Y is O, S or CH2; R1 is an optionally substituted aryl or heteroaromatic ring, wherein the optional substituents are selected from halogen, C¿1?-C4 alkyl, C1-C4 haloalkyl, C1-C4 alkoxy or C1-C4 haloalkoxy; R?2 and R3¿ are independently selected from hydrogen or halogen; and R?4 and R5¿ are independently selected from halogen. The compounds are useful as herbicides.