IRON-PROMOTED, REGIOSELECTIVE AND STEREOSELECTIVE ALLYLIC SUBSTITUTIONS FOR THE SYNTHESIS OF ALKENYL SULFONES SUBSTITUTED AT C-3

Almost complete transfer of chirality is observed in the nucleophilic addition of various carbon and nitrogen nucleophiles (Nu) to the highly enantiomerically enriched 1‐phenylsulfonyl‐substituted (η3‐allyl)tetracarbonyliron(1+) tetrafluoroborate with planar chirality (1; de, ee > 98%). Oxidative decomplexation yields alkenyl phenyl sulfones 2 with a range of subtituents at C‐3 and high enantiomeric purity (ee ≥ 96%). (Figure Presented.) Copyright © 1994 by VCH Verlagsgesellschaft mbH, Germany