Article ID Journal Published Year Pages File Type
1328352 Journal of Organometallic Chemistry 2007 7 Pages PDF
Abstract

On treatment of 5-siloxy-1,2,5-trienes with a catalytic amount of W(CO)6 under photoirradiation, two types of synthetically useful compounds, that is, 6-endo-cyclized products or formal Cope rearrangement products, are obtained selectively via the same intermediates simply by changing reaction conditions. In these reactions, electrophilic activation of the allene moiety is effectively achieved by coordination of W(CO)5, allowing intramolecular attack by neutral carbon nucleophiles in a 6-endo manner.

Graphical abstractOn treatment of 5-siloxy-1,2,5-trienes with a catalytic amount of W(CO)6 under photoirradiation, two types of synthetically useful compounds, that is, 6-endo-cyclized products or formal Cope rearrangement products, are obtained selectively via the same intermediates simply by changing reaction conditions. In these reactions, electrophilic activation of the allene moiety is effectively achieved by coordination of W(CO)5, allowing intramolecular attack by neutral carbon nucleophiles in a 6-endo manner.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemistry Inorganic Chemistry
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