[EN] NOVEL PRECATALYST SCAFFOLDS FOR CROSS-COUPLING REACTIONS, AND METHODS OF MAKING AND USING SAME<br/>[FR] NOUVEAUX SUPPORTS DE PRÉ-CATALYSEURS POUR RÉACTIONS À COUPLAGE MUTUEL, ET LEURS PROCÉDÉS DE FABRICATION ET D'UTILISATION
申请人:UNIV YALE
公开号:WO2016057600A1
公开(公告)日:2016-04-14
The present invention provides novel transition-metal precatalysts that are useful in preparing active coupling catalysts. In certain embodiments, the precatalysts of the invention are air-stable and moisture-stable. The present invention further provides methods of making and using the precatalysts of the invention.
Suzuki-Miyaura Cross-Coupling of Unprotected, Nitrogen-Rich Heterocycles: Substrate Scope and Mechanistic Investigation
作者:M. Alexander Düfert、Kelvin L. Billingsley、Stephen L. Buchwald
DOI:10.1021/ja4064469
日期:2013.8.28
mechanism behind the inhibitory effect of unprotected azoles on Pd-catalyzed cross-coupling reactions is described based on evidence gained through experimental, crystallographic, and theoretical investigations.
Synthesis of dihydroindazolo[2,3-<i>f</i>]phenanthridin-5(6<i>H</i>)-ones <i>via</i> Rh(<scp>iii</scp>)-catalyzed C–H activation of 2-aryl indazoles and annulation with iodonium ylides
An efficient syntheticroute to indazole-fused dihydrophenanthridinones in excellent to almost quantitative yields under mild reaction conditions was developed. The reaction utilizes the acid-controlled Rh(III)-catalyzed C–H activation of 3-arylindazoles followed by their annulation with readily available hypervalent iodonium ylides. This methodology afforded a wide range of products that could be
开发了一种在温和反应条件下以优异至几乎定量的产率合成吲唑稠合二氢菲啶酮的有效合成路线。该反应利用酸控制的 Rh( III ) 催化的 3-芳基吲唑的 C-H 活化,然后用现成的高价碘鎓叶立德进行环化。这种方法提供了广泛的产品,只需简单的过滤即可分离,无需柱层析。此外,催化体系可以循环使用至少八次,收率很高,这可能使其适合工业生产。此外,合成的二氢吲唑并[2,3 - f ]phenanthridin-5(6 H)-表示它们可能具有作为新型荧光材料的潜在应用。
Rhodium‐Catalysed Selective C−H Allylation of 1<i>H</i>‐Indazoles with Vinylethylene Carbonate: Easily Introducing Allylic Alcohol
作者:Xiang Zhao、Junwei Huang、Yadong Feng、Xiuling Cui
DOI:10.1002/ejoc.202300823
日期:2023.10.21
An efficient rhodium(III)-catalyzed C−H bond activation/allylation reaction of 3-aryl-1H-indazoles with easily available vinylethylene carbonate has been reported. A series of allyl alcohol substituted 3-aryl-1H-indazoles were obtained.
Precatalyst scaffolds for cross-coupling reactions, and methods of making and using same
申请人:YALE UNIVERSITY
公开号:US10894802B2
公开(公告)日:2021-01-19
The present invention provides novel transition-metal precatalysts that are useful in preparing active coupling catalysts. In certain embodiments, the precatalysts of the invention are air-stable and moisture-stable. The present invention further provides methods of making and using the precatalysts of the invention.