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Article: Organometallic chemistry.(Brief Article)
- Article from:
- Chemistry and Industry
- Article date:
- May 21, 2001
- Author:
CopyrightCOPYRIGHT 2001 Society of Chemical Industry. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Palladium catalysts can be used in different ways to mediate substitution of aryl C-H atoms with C-C groups. This section of Highlights begins with two such methods. The first is a classical telomerisation of dienes, via intermediates (1-3), followed by nucleophilic attack of phenols on the [pi]-ally1 component of (3) (A Krotz, F Vollmuller, G Stark and M Beller, Chem. Commun., 2001, 195). O-Arylation and C-arylation products such as (4) and (5) are formed (see Figure 1). The authors suggest this is due to the ambidentate nature of the nucleophile, but no evidence has been presented to rule out the possibility of a 3,3-sigmatropic rearrangement of the O-arylation product, ...
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