Cyclic Alkenenitriles: Synthesis, Conjugate Addition, and Stereoselective Annulation
作者:Fraser F. Fleming、Zhiyu Zhang、Qunzhao Wang、Omar W. Steward
DOI:10.1021/jo0345291
日期:2003.10.1
methylthiomethyl-protected hydroxyalkenenitriles that are easily hydrolyzed for subsequent annulations with omega-chloroalkyl Grignard reagents. Deprotonating the gamma-hydroxyalkenenitriles with t-BuMgCl followed by addition of omega-chloroalkyl Grignard reagents triggers a conjugate addition-alkylation sequence leading exclusively to cis-octalins, hydrindanes, and decalins. Stereoelectronic control favors an axial
PROCESS FOR THE TRANSITION METAL CATALYZED CYANATION OF ARYL/VINYL HALIDES
申请人:Studiengesellschaft Kohle mbH
公开号:EP3691784B1
公开(公告)日:2021-09-08
Nickel-Catalyzed Cyanation of Aryl Chlorides and Triflates Using Butyronitrile: Merging Retro-hydrocyanation with Cross-Coupling
作者:Peng Yu、Bill Morandi
DOI:10.1002/anie.201707517
日期:2017.12.4
We describe a nickel‐catalyzed cyanation reaction of aryl (pseudo)halides that employs butyronitrile as a cyanating reagent instead of highly toxic cyanide salts. A dual catalytic cycle merging retro‐hydrocyanation and cross‐coupling enables the conversion of a broad array of arylchlorides and aryl/vinyl triflates into their corresponding nitriles. This new reaction provides a strategically distinct