Axial chiral metallocenes by two-fold ring-closing metathesis

Dalton Trans. 2012 Aug 21;41(31):9269-71. doi: 10.1039/c2dt31291c. Epub 2012 Jul 2.

Abstract

Novel doubly bridged metallocenes have been prepared by remarkably selective two-fold alkene ring-closing metathesis. The solid state structures of 3 and 5 reveal 1,2',3,4'-connectivity and screw-shaped geometry of the molecules.