Asymmetric radical cyclization reactions of axially chiral N-allyl-o-iodoanilides to form enantioenriched N-acyl dihydroindoles
作者:Dennis P. Curran、Christine H.-T. Chen、Steven J. Geib、AndreJ.B. Lapierre
DOI:10.1016/j.tet.2004.02.064
日期:2004.5
Radicalcyclizations of enantiomerically enriched N-allyl-o-iodoanilides provide N-acyl-3-alkyl-2,3-dihydroindoles in good yields and with good to excellent levels of chiralitytransfer from the N–Ar axis to the new stereocenter. In competitive cyclizations of N-acryloyl-N-allyl-o-iodoanilides, the addition of an o-methyl group reverses the regioselectivity of the radicalcyclization from the acryloyl