报道了一种用于活化的亚甲基物质的芳基化的通用的新氧化方法。在温和的反应条件下(室温至40°C),Cu(OTf)2介导功能化的芳基硼物种与各种稳定的sp 3-亲核试剂的选择性偶联。丙二酸叔丁酯和酰胺基酯可用作底物以生成四元中心。作为传统交叉偶联或S N Ar方案的补充,在卤素亲电试剂(包括芳基溴化物和碘化物)存在下,该转化过程具有化学选择性。带有酰胺基,磺酰基基和膦酰基基团的底物不适合在温和的Hurtley型条件下偶联,是合适的反应伙伴。
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.
Enantioselective Synthesis of Chiral Indane Derivatives by Rhodium-Catalyzed Addition of Arylboron Reagents to Substituted Indenes
作者:Moeko Umeda、Hikaru Noguchi、Takahiro Nishimura
DOI:10.1021/acs.orglett.0c03651
日期:2020.12.18
asymmetric addition of arylboron reagents to indene derivatives proceeded to give 2-arylindanes in good yields with high enantioselectivity. Deuterium-labeling experiments indicated that the present reaction involved a 1,4-Rh shift from an initially formed benzylrhodium to an arylrhodium intermediate before protonation leading to the corresponding addition product. The asymmetric addition was also successful
Copper-Mediated Synthesis of Monofluoro Aryl Acetates via
Decarboxylative Cross-Coupling
作者:Anis Fahandej-Sadi、Rylan Lundgren
DOI:10.1055/s-0036-1588516
日期:2017.12
Cu-promoted oxidative cross-coupling of α-fluoromalonate half-esters and aryl boron reagents to deliver monofluoro α-aryl acetates under mild conditions (in air at room temperature). The reaction uses a simple, readily available monofluorinated building block to generate arylated compounds with functional groups that are not easily tolerated by existing methods, such as aryl bromides, iodides, pyridines
Palladium(II)-Catalyzed Enantioselective Synthesis of α-(Trifluoromethyl)arylmethylamines
作者:Thomas Johnson、Bo Luo、Mark Lautens
DOI:10.1021/acs.joc.6b00657
日期:2016.6.17
We describe a method for the synthesis of α-(trifluoromethyl)arylmethylamines that consists of the palladium(II)-catalyzed addition of arylboroxines to imines derived from trifluoroacetaldehyde. Palladium acetate is used as a catalyst with electron-neutral or electron-rich arylboroxines, and it was found that addition of an ammonium or silver salt was crucial to promote the reaction of electron-poor