Palladium catalysed queuing processes. Part 1: Termolecular cyclization-anion capture employing carbon monoxide as a relay switch and hydride, organotin(IV) or boron reagents
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作者:
Brown, S
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机构:Univ Leeds, MIDAS Ctr, Leeds LS2 9JT, W Yorkshire, England
Brown, S
Clarkson, S
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机构:Univ Leeds, MIDAS Ctr, Leeds LS2 9JT, W Yorkshire, England
Clarkson, S
Grigg, R
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Univ Leeds, MIDAS Ctr, Leeds LS2 9JT, W Yorkshire, EnglandUniv Leeds, MIDAS Ctr, Leeds LS2 9JT, W Yorkshire, England
Grigg, R
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Thomas, WA
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机构:Univ Leeds, MIDAS Ctr, Leeds LS2 9JT, W Yorkshire, England
Thomas, WA
Sridharan, V
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机构:Univ Leeds, MIDAS Ctr, Leeds LS2 9JT, W Yorkshire, England
Sridharan, V
Wilson, DM
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机构:Univ Leeds, MIDAS Ctr, Leeds LS2 9JT, W Yorkshire, England
Wilson, DM
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[1] Univ Leeds, MIDAS Ctr, Leeds LS2 9JT, W Yorkshire, England
[2] AstraZeneca, Huddersfield HD2 1FF, W Yorkshire, England
The concept of relay switch reactants, which substantially enhance the scope of our cyclization-anion capture methodology, is introduced and exemplified by a wide variety of catalytic cyclization-carbonylation-anion capture processes employing hydride, organostannanes and NaBPh4 as anion capture agents. Mono- and bis-cyclization processes forming 5- and 6-membered rings are described, all of which employ CO at atmospheric pressure. Cyclocarboformylation processes provide interesting analogues of hydroformylation. (C) 2001 Elsevier Science Ltd. All rights reserved.