Construction of Quaternary Stereocenters by Nickel‐Catalyzed Heck Cyclization Reactions
作者:Jean‐Nicolas Desrosiers、Liana Hie、Soumik Biswas、Olga V. Zatolochnaya、Sonia Rodriguez、Heewon Lee、Nelu Grinberg、Nizar Haddad、Nathan K. Yee、Neil K. Garg、Chris H. Senanayake
DOI:10.1002/anie.201606955
日期:2016.9.19
A nickel‐catalyzedHeckcyclization for the construction of quaternarystereocenters is reported. This transformation is demonstrated in the synthesis of 3,3‐disubstituted oxindoles, which are prevalent motifs seen in numerous biologically active molecules. The method shows broad scope, proceeds in synthetically useful yields, and provides a rare means to construct stereochemically complex frameworks
The palladiumcatalysed reactions of 2-halophenols and -anilines with vinyl halides or triflates and CO(1atm) generates 3-spiro-2-oxindoles and 3-spiro-2(3H)-benzofuranones. Analogous tetramolecular reactions employing norbornenyl triflate and organo-tin(IV) or -boron(III) reagents allow additional functionality to be incorporated regio- and stereo-specifically.
Intramolecular alkene arylations for rapid assembly of polycyclic systems containing quaternary centers. A new synthesis of spirooxindoles and other fused and bridged ring systems
作者:Matthew M. Abelman、Taeboem Oh、Larry E. Overman
DOI:10.1021/jo00227a038
日期:1987.9
ABELMAN, M. W.;OH, T.;OVERMAN, L. E., J. ORG. CHEM., 52,(1987) N 18, 4130-4133