Highly efficient Rh(I) and Ir(I) single and dual metal catalysed dihydroalkoxylation reactions of alkyne diols
Date
2010
Authors
Ho, Joanne H H
Hodgson, Richard
Wagler, Jorg
Messerle, Barbara Ann
Journal Title
Journal ISSN
Volume Title
Publisher
Royal Society of Chemistry
Abstract
A highly efficient rhodium(i) and iridium(i) catalysed dihydroalkoxylation reaction of alkyne diols is employed here for the synthesis of spiroketals and a fused bicyclic ketal. The two metal catalysts show differential selectivity and efficiency for either the cyclisation of the 5-exo or 6-endo-membered rings. For the first time, a dual metal (Rh and Ir) catalyst system is effectively utilised for the formation of the 5,6-spiroketals, more efficiently than the single metal catalysts. The two different metals create a dual activation pathway to enhance the 5- and 6-membered ring closure as compared with the equivalent single catalysts.
Description
Keywords
Keywords: 6-membered rings; Catalyst system; Cyclisations; Dual activation; Metal catalyst; Single catalyst; Spiroketals; Acetylene; Catalysis; Catalyst selectivity; Iridium; Rhodium; Synthesis (chemical); Metals; alkyne; coordination compound; furan derivative; ir
Citation
Collections
Source
Dalton Transactions
Type
Journal article
Book Title
Entity type
Access Statement
License Rights
DOI
Restricted until
2037-12-31
Downloads
File
Description