[EN] PROCESS FOR THE PREPARATION OF DICARBOXYLIC ACIDS OR DICARBOXYLIC ACID ESTERS BY METATHESIS [FR] PROCÉDÉ DE PRÉPARATION D'ACIDES DICARBOXYLIQUES OU D'ESTERS D'ACIDES DICARBOXYLIQUES PAR MÉTATHÈSE
Development of small-molecule inhibitors of fatty acyl-AMP and fatty acyl-CoA ligases in Mycobacterium tuberculosis
作者:Marzena Baran、Kimberly D. Grimes、Paul A. Sibbald、Peng Fu、Helena I.M. Boshoff、Daniel J. Wilson、Courtney C. Aldrich
DOI:10.1016/j.ejmech.2020.112408
日期:2020.9
biochemical roles of many FACLs remain poorly characterized while the functionally non-redundant FAALs are much better understood. Here we describe the systematic investigation of 5′-O-[N-(alkanoyl)sulfamoyl]adenosine (alkanoyl adenosine monosulfamate, alkanoyl-AMS) analogs as potential multitarget FadD inhibitors for their antitubercular activity and biochemical selectivity towards representative FAAL and
Cobalt-Catalyzed Allylic C(sp<sup>3</sup>)–H Carboxylation with CO<sub>2</sub>
作者:Kenichi Michigami、Tsuyoshi Mita、Yoshihiro Sato
DOI:10.1021/jacs.7b02775
日期:2017.5.3
tolerability, so that selective addition to CO2 occurred in the presence of other carbonyl groups such as amide, ester, and ketone. Since styrylacetic acidderivatives can be readily converted into optically active γ-butyrolactones through Sharpless asymmetric dihydroxylation, this allylic C(sp3)-H carboxylation showcases a facile synthesis of γ-butyrolactones from simple allylarenes via short steps.
借助 Co/Xantphos 复合物开发了末端烯烃的烯丙基 C(sp3)-H 键与 CO2 的催化羧化。广泛的烯丙基芳烃和 1,4-二烯以中等至高产率成功转化为线性苯乙烯乙酸和六-3,5-二烯酸衍生物,并具有出色的区域选择性。羧化显示出显着的官能团耐受性,因此在其他羰基(如酰胺、酯和酮)存在的情况下,会发生选择性加成到 CO2 中。由于苯乙烯乙酸衍生物可以通过 Sharpless 不对称二羟基化很容易地转化为光学活性的 γ-丁内酯,这种烯丙基 C(sp3)-H 羧化展示了从简单的烯丙基芳烃通过短步骤轻松合成 γ-丁内酯。
Directed Palladium(II)-Catalyzed Intermolecular Anti-Markovnikov Hydroarylation of Unactivated Alkenes with (Hetero)arylsilanes
We describe herein a regioselective palladium(II)-catalyzedintermolecularhydroarylation of unactivated aliphatic alkenes with electronically and sterically diverse (hetero)arylsilanes under redox-neutral conditions. A removable bidentate 8-aminoquinoline auxiliary was readily employed to dictate the regioselectivity, prevent β-hydride elimination, and facilitate protodepalladation. This silicon-based
[EN] PROCESS FOR THE PREPARATION OF DICARBOXYLIC ACIDS OR DICARBOXYLIC ACID ESTERS BY METATHESIS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDES DICARBOXYLIQUES OU D'ESTERS D'ACIDES DICARBOXYLIQUES PAR MÉTATHÈSE
申请人:EMERY OLEOCHEMICALS GMBH
公开号:WO2011110349A3
公开(公告)日:2013-03-07
A facile synthesis of γ-butenolides via cyclization of 3-alkenoic acids with dimethyl sulfoxide and oxalyl bromide
Abstract The combination of dimethylsulfoxide and oxalyl bromide was used to accomplish the cyclization of 3-alkenoic acids with the aid of a base to afford γ-butenolides, in which bromodimethylsulfonium salt generated in situ was proposed to serve as a Br+ source. GRAPHICAL ABSTRACT