The addition of trichloromethyl compounds to olefins under iron or copper chloride catalysis is a general process, without almost any restriction on the olefin, and provides for high yields of 1: l adducts without te1omerization. l Trichloromethane phosphonyldichloride reacts in a similar fashion, via a redox chain. The phosphonylchloride function is retained in the adducts, as expected.
![[phenoxy(trichloromethyl)phosphoryl]oxybenzene Structure](https://image.chemsrc.com/caspic/400/23614-63-3.png)