MONOBACTAM ORGANIC COMPOUNDS FOR THE TREATMENT OF BACTERIAL INFECTIONS
申请人:AULAKH Virender Singh
公开号:US20150266867A1
公开(公告)日:2015-09-24
This invention pertains generally to antibacterial compounds of Formula I,
as further described herein, and pharmaceutically acceptable salts and formulations thereof. In certain aspects, the invention pertains to methods of using such compounds to treat infections such as those caused by Gram-negative bacteria.
Nickel/Photoredox‐Catalyzed Asymmetric Reductive Cross‐Coupling of Racemic α‐Chloro Esters with Aryl Iodides
作者:Haixing Guan、Qianwen Zhang、Patrick J. Walsh、Jianyou Mao
DOI:10.1002/anie.201914175
日期:2020.3.23
A unique nickel/organic photoredox co-catalyzed asymmetricreductive cross-coupling between α-chloro esters and aryl iodides is developed. This cross-electrophile coupling reaction employs an organic reductant (Hantzschester), whereas most reductive cross-coupling reactions use stoichiometric metals. A diverse array of valuable α-aryl esters is formed under these conditions with high enantioselectivities
HIGH MOLECULAR WEIGHT ZWITTERION-CONTAINING POLYMERS
申请人:Oligasis
公开号:US20140024776A1
公开(公告)日:2014-01-23
The present invention provides multi-armed high MW polymers containing hydrophilic groups and one or more functional agents, and methods of preparing such polymers.
The first iron-catalyzed enantioselective cross-coupling reaction between an organometallic compound and an organic electrophile is reported. Synthetically versatile racemic α-chloro- and α-bromoalkanoates were coupled with aryl Grignard reagents in the presence of catalytic amounts of an iron salt and a chiral bisphosphine ligand, giving the products in high yields with acceptable and synthetically
A Novel Type of Chiral Diphosphine Ligand, trans-2,3-Bis(diphenylphosphino)-1-methyl-1-cyclopropanecarboxylic Acid and Asymmetric Allylic Alkylation by the Use of Its Palladium Complex
Optically active trans-2,3-bis(diphenylphosphino)-1-methyl-1-cyclopropanecarboxylic acid was synthesized from trans-1,2-bis(diphenylphosphinyl)ethene via resolution of the racemic diphosphine oxide. Asymmetric allylic alkylation of 2-cyclohexenyl acetate with l-menthyl sodiodiethylphosphonoacetate was achieved in good optical yields by the use of its palladium complex.