The [Rh-2(OAc)(4)] catalyzed decomposition of (N-(p-nitrobenzenesulfon
yl)imino)phenyliodinane (PhI=NNs) in the presence of olefins affords a
ziridines In yields of 18-85%. The aziridination of cis-beta-methylsty
rene (1h) and cis-hex-2-ene (1k) is stereospecific. However, with cis-
stilbene (Im) a ca 3:1 mixture of cis- and trans aziridines 2m and 2l
is obtained. With chiral catalysts asymmetric inductions in up to 73%
ee are obtained.