Uses
Rieke magnesium reacts with aryl halides at -78 °C to afford the corresponding Grignard reagents, often with considerable selectivity. Rieke magnesium is famous for enabling the formation of "impossible Grignard reagents" such as those derived from aryl fluorides and from 2-chloronorbornane.
Rieke zinc reacts with bromoesters to give organozinc reagents of value for the Reformatsky reaction.
Read more about this topic: Rieke Metals