OXIDATIVE COUPLING OF ARYL BORON REAGENTS WITH SP3-CARBON NUCLEOPHILES, AND AMBIENT DECARBOXYLATIVE ARYLATION OF MALONATE HALF-ESTERS VIA OXIDATIVE CATALYSIS
申请人:The Governors of the University of Alberta
公开号:US20180186721A1
公开(公告)日:2018-07-05
Described herein are methods of oxidative coupling of aryl boron reagents with sp
3
-carbon nucleophiles, and ambient decarboxylative arylation of malonate half-esters via oxidative catalysis.
A versatile and site-selective rhodium(III)-catalyzed aerobic oxidativealkenylation of arylacetamides including primary, secondary, and tertiary amides having a weak O-coordinating acetamide directing group with alkenes is described. In the reaction, air was utilized as a sole oxidant. The reaction was compatible with activated alkenes and maleimides.
The C–H alkylation of arylacetamides with activated alkenes such as substituted acrylates and vinylsulphone in the presence of a ruthenium catalyst and organic acid via the weak O-coordination under the redox free version is described. The present protocol was effective with different substituted arylacetamides including secondary and tertiary amides. The reaction mechanism including the ortho C–H
Ambient Decarboxylative Arylation of Malonate Half-Esters via Oxidative Catalysis
作者:Patrick J. Moon、Shengkang Yin、Rylan J. Lundgren
DOI:10.1021/jacs.6b08906
日期:2016.10.26
We report decarboxylative carbonyl α-arylation by coupling of arylboron nucleophiles with malonic acid derivatives. This process is enabled by the merger of aerobicoxidative Cu catalysis with decarboxylative enolate interception reminiscent of malonyl-CoA reactivity in polyketide biosynthesis. This method enables the synthesis of monoaryl acetate derivatives containing electrophilic functional groups
我们报告了通过芳基硼亲核试剂与丙二酸衍生物偶联的脱羧羰基α-芳基化。这个过程是通过有氧氧化铜催化与脱羧烯醇化物拦截的结合来实现的,这让人联想到聚酮化合物生物合成中的丙二酰辅酶 A 反应性。该方法能够合成含有与现有α-芳基化反应范式不相容的亲电官能团的乙酸单芳基酯衍生物。该反应的效用在药物中间体合成和后期功能化中得到了证明。
Rhodium(III)-Catalyzed Redox-Neutral Weak <i>O</i>-Coordinating Vinylation and Allylation of Arylacetamides with Allylic Acetates
作者:Subramanian Jambu、Masilamani Jeganmohan
DOI:10.1021/acs.orglett.9b01995
日期:2019.7.19
efficient Rh(III)-catalyzed redox-neutral weak O-coordinating vinylation and allylation of arylacetamides with allylic acetates are described. A wide variety of arylacetamides containing primary, secondary, and tertiary amides and substituted allylic acetates was compatible for the reaction. The synthesized ortho-vinylated arylacetamides were converted into ortho-vinylated phenyl aceticacid and biologically