Synthesis of 3-(Diarylmethylene)oxindoles via a Palladium-Catalyzed One-Pot Reaction: Sonogashira-Heck-Suzuki-Miyaura Combined Reaction
摘要:
A novel one-pot reaction for the synthesis of 3-(diarylmethylene)oxindoles is described. The reaction involves the successive combination of three palladium-catalyzed reactions (Sonogashira, Heck, and Suzuki-Miyaura reactions). This method enables the rapid synthesis of various 3-(diarylmethylene)oxindoles from simple propiolamides. The addition of silver salts dramatically enhanced the E/Z stereoselectivity of the reaction.
Palladium-Catalyzed One-Pot Approach to 3-(Diarylmethylene)oxindoles from Propiolamidoaryl Triflate
作者:Dahye Lee、Sunhwa Park、Yoseb Yu、Kye Shin、Jae Seo
DOI:10.3390/molecules200814022
日期:——
3-(Diarylmethylene)oxindoles have been synthesized from propiolamidoaryl triflate utilizing a palladium-catalyzed one-pot reaction consisting of three successive reactions: Sonogashira, Heck, and Suzuki-Miyaura. This method allows for the production of a complex skeleton of 3-(diarylmethylene)oxindole from propiolamidoaryl triflate using a commercially available aryl iodide and arylboronic acid in a simple and efficient way with moderate yield and stereoselectivity.
Pd-Catalyzed Direct C–H Activation for the C5-Olefination of Methyleneindolinones
作者:Xian-Kuan Xu、Jian-Wei Liu、Deng-Yuan Li、Pei-Nian Liu
DOI:10.1021/acs.joc.1c00637
日期:2021.5.21
The directC–Hactivation without directing groups can realize the para-selectivity, which is a powerful and concise approach for functionalization of arenes. Utilizing the strategy, a C5-olefination of methyleneindolinones has been successfully developed by palladium-catalyzed directC–Hactivation, which provides an expeditious access to 5-vinylindolin-2-ones with high regioselectivity. The protocol
Palladium Nanoparticle-Catalyzed Stereoselective Domino Synthesis of All-Carbon Tetrasubstituted Olefin Containing Oxindoles via Carbopalladation/C–H Activation
作者:Naziya Parveen、Govindasamy Sekar
DOI:10.1021/acs.joc.0c00915
日期:2020.8.21
catalyzed single-step, stereoselective domino synthesis of symmetrically and unsymmetrically all-carbon tetrasubstituted olefin containing oxindoles from readily accessible anilides has been developed. The Pd-BNP catalyst showed a wide range of functional group tolerance that enabled building a library of heteroaromatics. This reusable Pd catalyst reflected its utility in the synthesis of biologically important
Palladium-Catalyzed Tandem Approach to 3-(Diarylmethylene)oxindoles Using Microwave Irradiation
作者:Jae Seo、Sunhwa Park、Kye Shin
DOI:10.1055/s-0035-1560091
日期:——
We developed a rapid and efficient microwave-assisted tandem reaction for the synthesis of 3-(diarylmethylene)oxindoles. Three palladium-catalyzedreactions (Sonogashira, Heck, and Suzuki–Miyaura reactions) were combined under microwave irradiation conditions to produce 3-(diarylmethylene)oxindoles from simple propiolamides, aryliodides, and arylboronic acids. The addition of Ag 3 PO 4 enhanced the
我们开发了一种快速有效的微波辅助串联反应,用于合成 3-(二芳基亚甲基)羟吲哚。三个钯催化的反应(Sonogashira、Heck 和 Suzuki-Miyaura 反应)在微波辐射条件下结合,从简单的丙酰胺、芳基碘和芳基硼酸生产 3-(二芳基亚甲基)羟吲哚。Ag 3 PO 4 的加入显着提高了串联反应的产率和立体选择性。
Consecutive One-Pot versus Domino Multicomponent Approaches to 3-(Diarylmethylene)oxindoles
作者:Sunhwa Park、Jiyun Lee、Kye Shin、Euichaul Oh、Jae Seo
DOI:10.3390/molecules22030503
日期:——
reactions (Sonogashira, Heck and Suzuki-Miyaura reactions), a more efficient domino multicomponent method has been successfully developed to access a wide variety of 3-(diarylmethylene)oxindoles. Microwave irradiation and use of a silver salt were the most important factors to achieve high yields and stereoselectivity.