Enantioselective Synthesis of 3-Azabicyclo[4.1.0]heptenes and 3-Azabicyclo[3.2.0]heptenes by Ir-Catalyzed Asymmetric Allylic Amination of<i>N</i>-Tosyl Propynylamine and Pt-Catalyzed Cycloisomerization
作者:Ji-Bao Xia、Wen-Bo Liu、Tian-Min Wang、Shu-Li You
DOI:10.1002/chem.201000467
日期:2010.6.11
Irresistible! Highly regio‐ and enantioselective Ir‐catalyzed allylicamination reactions of N‐tosyl propynylamines have been realized. The resulting N‐tosyl allylpropynylamines were transformed into highly enantioenriched 3‐azabicyclo[4.1.0]heptenes and 3‐azabicyclo[3.2.0]heptenes, respectively, in the presence of PtCl2 (see scheme; Ts=tosyl, cod=1,5‐cyclooctadiene, TBAF=tetrabutylammonium fluoride