Preparation of 4-Allylisoindoline via a Kumada Coupling with Allylmagnesium Chloride
摘要:
A practical, cost-effective Kumada coupling for the preparation of 4-allylisoindoline has been developed. The first catalyst screen for this reaction with allylmagnesium reagents is described. The challenges associated with product isomerization have been minimized by a thorough understanding of the reaction parameters. Additionally, a novel workup protocol has been developed to render Mg salts soluble in aqueous media at pH 10.
Synthesis of the HCV Protease Inhibitor Vaniprevir (MK-7009) Using Ring-Closing Metathesis Strategy
作者:Jongrock Kong、Cheng-yi Chen、Jaume Balsells-Padros、Yang Cao、Robert F. Dunn、Sarah J. Dolman、Jacob Janey、Hongmei Li、Michael J. Zacuto
DOI:10.1021/jo3001595
日期:2012.4.20
A highly efficient synthesis of Vaniprevir (MK-7009) has been accomplished in nine linear steps and 55% overall yield. The key features of this synthesis include a cost-effective synthesis of the isoindoline subunit and efficient construction of the 20-membered macrocyclic core of Vaniprevir (MK-7009) utilizing ring-closing metathesis technology. A high-performing ring-closing metathesis protocol has been achieved by simultaneous slow addition of the ruthenium catalyst (0.2 mol %) and the diene substrate at a concentration of 0.13 M.
US9120818B2
申请人:——
公开号:US9120818B2
公开(公告)日:2015-09-01
PROCESS AND INTERMEDIATES FOR PREPARING MACROLACTAMS
申请人:Chen Cheng
公开号:US20130274463A1
公开(公告)日:2013-10-17
The present invention relates to macrolactam compounds, intermediates useful in the preparation of macrolactams, methods for preparing the intermediates, and methods for preparing and modifying macrolactams. One use of the compounds and methods described herein is in the production of macrolactam compounds able to inhibit HCV NS3 protease activity. An example of an HCV inhibitory compound that can be synthesized using the procedures described herein is Compound A and derivative thereof.
Preparation of 4-Allylisoindoline via a Kumada Coupling with Allylmagnesium Chloride
作者:Michael J. Zacuto、C. Scott Shultz、Michel Journet
DOI:10.1021/op1002837
日期:2011.1.21
A practical, cost-effective Kumada coupling for the preparation of 4-allylisoindoline has been developed. The first catalyst screen for this reaction with allylmagnesium reagents is described. The challenges associated with product isomerization have been minimized by a thorough understanding of the reaction parameters. Additionally, a novel workup protocol has been developed to render Mg salts soluble in aqueous media at pH 10.