Iron-catalyzed coupling reaction between 1,1-dichloro-1-alkenes and Grignard reagents

This letter reports the coupling reaction of Grignard reagents with 1, 1-dichloro-1-alkenes in the presence of the environmentally friendly iron(III) catalyst. This non-toxic procedure is general and provides the di-coupled products as the major compounds. The scope and limitations of this new reaction are described.