The first syntheses of enantiopure 2,2′-biindoline
作者:Steven M. Wales、Anthony C. Willis、Paul A. Keller
DOI:10.1039/c0cc04045b
日期:——
The first two syntheses of chiral 2,2â²-biindoline are reported either in five steps from 2,2â²-bioxirane, or three steps from 2,2â²-biaziridine, both with exceptional enantiopurity.
Enantiopure <i>Trans</i>-4,5-Disubstituted 2-Imidazolidinones via Copper(I)-Catalyzed Ring Opening of 1,1′-DiBoc-2,2′-Biaziridine with Grignard Reagents
作者:Matthew D. Kennedy、Stephen J. Bailey、Steven M. Wales、Paul A. Keller
DOI:10.1021/acs.joc.5b00832
日期:2015.6.5
The copper-catalyzed ring opening of chiral-pool-derived 1,1′-diBoc-2,2′-biaziridine with Grignard reagents affords enantiopure 2-imidazolidinones in a desymmetrizing, cascade process involving the Boc protectinggroup. This divergent strategy provides reaction-ready, N-differentiated products and allows two C–C bond constructions concurrent to imidazolidinone formation. A variety of alkyl, cyclic