[EN] OXAZOLIDINONE DERIVATIVES N-SUBSTITUTED BY A BICYCLIC RING, FOR USE AS ANTIBACTERIAL AGENTS<br/>[FR] DERIVES D'OXAZOLIDINONE N-SUBSTITUES PAR UN NOYAU BICYCLIQUE, UTILISES COMME AGENTS ANTIBACTERIENS
申请人:WARNER LAMBERT CO
公开号:WO2004069244A1
公开(公告)日:2004-08-19
Compounds of formula (I) and methods for their preparation are disclosed. Further disclosed are methods of making biologically active compounds of formula (I) as well as pharmaceutically acceptable compositions comprising compounds of formula (I). Compounds of formula (I) as disclosed herein can be used in a variety of applications including use as antibacterial agents. P is a bicyclic ring system as defined in claim 1.
shown to be an effective catalyst for an enantioselectivecarbonyl-enereaction of 1,1-disubstituted olefins with ethyl glyoxylate as the common enophile. The perfluoro-binaphthyl skeleton is beneficial not only for adopting high catalytic activity but also for creating an effective chiral environment for enantioselective transformations. Indeed, the reaction afforded enantio-enriched homoallylic alcohols
F 10 BINOL 衍生的手性磷酸被证明是 1,1-二取代烯烃与乙醛酸乙酯作为常见亲烯体的对映选择性羰基反应的有效催化剂。全氟联萘骨架不仅有利于采用高催化活性,而且有利于为对映选择性转化创造有效的手性环境。实际上,该反应以高产率和高对映选择性提供了富含对映体的高烯丙醇。理论研究确定了多点C-H⋯O氢键和底物与F 10 3,3'-位的6-甲氧基-2-萘基取代基之间的π相互作用BINOL 骨架在确定立体化学结果中起着至关重要的作用。还通过催化剂的结构分析评估了全氟联萘骨架在实现高对映选择性方面的重要性。
Difluorinative ring expansions of benzo-fused carbocycles and heterocycles are achieved with<i>p</i>-(difluoroiodo)toluene
作者:Zhensheng Zhao、Avery J. To、Graham K. Murphy
DOI:10.1039/c9cc08310c
日期:——
A chemoselective fluorinative ring expansion has been realized using the hypervalent iodine (HVI) reagent p-TolIF2, which delivers β,β-difluoroalkyl arenes in yields up to 89% and allylic gem-difluorides in yields up to 78%. This rapid reaction exploits the ambiphilic nature of alkenes and allenes, and incorporates both fluorine atoms of the (difluoroiodo)arene in the products. The mechanism involves
Gadolinium Photocatalysis: Dearomative [2+2] Cycloaddition/Ring‐Expansion Sequence with Indoles
作者:Jiajia Ma、Felix Schäfers、Constantin Daniliuc、Klaus Bergander、Cristian A. Strassert、Frank Glorius
DOI:10.1002/anie.202001200
日期:2020.6.8
photocatalysis of a highlyregioselective, intermolecular [2+2] photocycloaddition/ring‐expansion sequence with indoles, which could provide divergent access to cyclopenta[b ]indoles and indolines. A simple and commercially available Gd(OTf)3 salt is sufficient for this visible‐violet‐light‐induced transformation. The reaction proceeds either through a transient or start‐to‐end dearomatization cascade and
We report herein a novel photoredox‐catalyzed synthesis of allylic trifluoromethanes. The use of sulfilimino iminium as a source of trifluoromethyl radicals proves crucial to achieving high selectivity. Importantly, both styrene derivatives and unactivated alkenes are for the first time suitable partners for this process. The mild reaction conditions are compatible with a variety of functional groups
我们在这里报告了一种新型的光氧化还原催化的烯丙基三氟甲烷合成。证明使用硫基氨基亚胺作为三氟甲基自由基的来源对于实现高选择性至关重要。重要的是,苯乙烯衍生物和未活化的烯烃都首次是该方法的合适的伙伴。温和的反应条件与各种官能团相容。显着地,该方法易于扩展至其他全氟烷基(R F= CFCl 2,CF 2 Br,C 4 F 9)。还提供了广泛的力学研究。