Chiral α-Amino Acid/Palladium-Catalyzed Asymmetric Allylation of α-Branched β-Ketoesters with Allylic Amines: Highly Enantioselective Construction of All-Carbon Quaternary Stereocenters
作者:Ya-Nan Xu、Meng-Zeng Zhu、Shi-Kai Tian
DOI:10.1021/acs.joc.9b02282
日期:2019.11.15
use of allylic amines as allylating agents in the chiral α-aminoacid/palladium-catalyzed asymmetric allylation of α-branched β-ketoesters, providing highly enantioselective access to all-carbon quaternary stereocenters. Notably, the formation of a primary amine, a secondary amine, or ammonia as a byproduct has little influence on the enantioselectivity for the catalytic asymmetric synthesis of structurally
[EN] METHODS OF REDUCING VIRULENCE IN BACTERIA<br/>[FR] PROCÉDÉS DE RÉDUCTION DE LA VIRULENCE DE BACTÉRIES
申请人:UWM RES FOUNDATION INC
公开号:WO2011103189A1
公开(公告)日:2011-08-25
A method of reducing virulence in a bacterium comprising at least one of a GacS/GacA-type system, a HrpX/HrpY-type system, a T3SS-type system, and a Rsm-type system, the method comprising contacting the bacterium with an effective amount of a compound described herein.
Direct amination of unactivated allylic alcohols with aqueousammonia was catalyzed by a Pt/phosphine complex to give the corresponding allylamines along with water as the sole by‐product. Under optimized reaction conditions, primary allylamines were obtained as major products with excellent monoallylation selectivity. cod=1,5‐cyclooctadiene.
A method of reducing virulence in a bacterium comprising at least one of a GacS/GacA-type system, a HrpX/HrpY-type system, a T3SS-type system, and a Rsm-type system, the method comprising contacting the bacterium with an effective amount of a compound described herein.
1-Aza-1,3-bis(triphenylphosphoranylidene)propane: A Novel :CHCH2N: Synthon
作者:Alan R. Katritzky、Jinlong Jiang、Peter J. Steel
DOI:10.1021/jo00095a034
日期:1994.8
1-Aza-1,3-bis(triphenylphosphoranylidene)propane (3), prepared in situ by the reaction of 1-[[(triphenylphosphoranylidene)amino]methyl]benzotriazole (betmip, 4) with methylidenetriphenylphosphorane followed by treatment with butyllithium, enables convenient preparations of 3H-2-benzazepine (7), 2,3-diarylpyrroles 8, and primary allylamines 12 and 13.