Substituted aminophenyl isoxazoline derivatives useful as antimicrobials
申请人:Pharmacia & Upjohn Company
公开号:US06069141A1
公开(公告)日:2000-05-30
The present invention provides novel substituted amionphenyl isoxazoline derivatives of formula I ##STR1## wherein R.sub.1 is H, alkyl, cycloalkyl, alkoxy, amino, or alkylamino; X and Y are the same and different and are H, F, or CH.sub.3 ; W is O, or S; Q is a 4-, 5-, 6-, 7-, or 9-membered heterocyclic moiety containing one or more nitrogen, sulfur and/or oxygen. The compounds of the invention are useful as antimicrobial agents for preventing and treating infectious diseases.
提供一种无需提纯副产物即可高产率、高纯度生产苯亚烷基酸衍生物的一步法。具体地说,就是以各种卤代氟芳基和卤代亚烷基酯为原料,通过一步反应制得所需的苯基亚烷基酸衍生物,产率高,选择性好,操作简单,时间短。将 1-溴-3,4,5-三氟苯滴入四氢呋喃中的镁悬浮液中,再加入四氢呋喃中的无水氯化锌,然后加入双(乙酰丙酮)2,2'-联吡啶镍,即可得到乙炔醛化合物。'-联吡啶镍 (II) 和其他过渡金属催化剂,在溴乙酸乙酯存在下生成 3,4,5-三氟苯乙酸乙酯。无。
SUBSTITUTED AMINOPHENYL ISOXAZOLINE DERIVATIVES USEFUL AS ANTIMICROBIALS
申请人:PHARMACIA & UPJOHN COMPANY
公开号:EP1054874B1
公开(公告)日:2002-08-28
Process for the preparation of fluorophenylalkylene acid derivatives
申请人:DAINIPPON INK AND CHEMICALS, INC.
公开号:EP1484304A1
公开(公告)日:2004-12-08
The invention relates to the preparation of fluorophenylalkylene acid derivatives of the formulae (4-1)-(4-3):
by reaction between fluoroarylmetal halides of formulae (1-1) or (1-2) with carboxylic acid derivatives of formulae (2-1)-(2-3):
in the presence of at least one transition metal catalyst of formulae (3-1)-(3-7):
in the above formulae, the variables have the meanings given in the description.
Catalytic Asymmetric γ‐Lactam Synthesis from Enolisable Anhydrides and Imines
作者:Aarón Gutiérrez Collar、Cristina Trujillo、Bruce Lockett‐Walters、Brendan Twamley、Stephen J. Connon
DOI:10.1002/chem.201901028
日期:2019.5.28
An anion‐binding approach to the problem of preparing enantioenriched γ‐lactams from enolisable anhydrides and imines is reported. A simple bisurea catalyst promotes the cycloaddition between α‐aryl succinic anhydrides and either PMP‐ or benzhydryl‐protected aldimines to provide γ‐lactams with two contiguous stereocentres (one quaternary) with complete diastereocontrol and high to excellent enantioselectivity