Simple Palladacyclic and Platinacyclic Catalysts for the 1,4-Conjugate Addition of Arylboronic Acids and Arylsiloxanes to Enones

Simple Palladacyclic and Platinacyclic Catalysts for the 1,4-Conjugate Addition of Arylboronic Acids and Arylsiloxanes to Enones

A range of palladacyclic, platinacyclic, and pincer-based catalysts have been tested for activity in 1,4-conjugate addition reactions. π-Acidic palladacycles show excellent activity at room temperature in the reaction of enones with arylboronic acids and reasonable activity when the arylboronic acid...

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Veröffentlicht in:Organometallics 2007-12, Vol.26 (25), p.6346-6353
Hauptverfasser: Bedford, Robin B., Betham, Michael, Charmant, Jonathan P. H., Haddow, Mairi F., Orpen, A. Guy, Pilarski, Lukasz T., Coles, Simon J., Hursthouse, Michael B.
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container_end_page 6353
container_issue 25
container_start_page 6346
container_title Organometallics
container_volume 26
creator Bedford, Robin B.
Betham, Michael
Charmant, Jonathan P. H.
Haddow, Mairi F.
Orpen, A. Guy
Pilarski, Lukasz T.
Coles, Simon J.
Hursthouse, Michael B.
description A range of palladacyclic, platinacyclic, and pincer-based catalysts have been tested for activity in 1,4-conjugate addition reactions. π-Acidic palladacycles show excellent activity at room temperature in the reaction of enones with arylboronic acids and reasonable activity when the arylboronic acids are replaced by arylsiloxanes. The X-ray structures of three new palladium κ3-“PCP”-pincer complexes are presented; surprisingly, these complexes show no activity, despite the fact that notionally related phosphine and carbene adducts of palladacycles do.
doi_str_mv 10.1021/om700724c
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title Simple Palladacyclic and Platinacyclic Catalysts for the 1,4-Conjugate Addition of Arylboronic Acids and Arylsiloxanes to Enones
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