Aromatic Ring Construction from Zirconocenes and Titanocenes

AROMATIC RING CONSTRUCTION FROM ZIRCONOCENES AND TITANOCENES 

In this chapter we focus on the selective synthesis of aromatic hydrocarbons and heterocycles from unsaturated molecules by using zirconocenes and titanocenes via transmetallation to other metals, such as Cu, Ni, and Li. Although there are several examples of aromatic ring formations directly from metallacycles, we emphasize the cooperative effects in particular, transmetallation from group 4 metals to the other metal species. The coupling reaction of a Cp ligand with the diene moiety in a 

Transition-Metal-Mediated Aromatic Ring Construction, First Edition. Edited by Ken Tanaka. 2013 John Wiley Sons, Inc. Published 2013 by John Wiley Sons, Inc. 

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