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Uncatalyzed, diastereoselective vinylogous Mukaiyama aldol reactions on aqueous media: pyrrole vs furan 2-silyloxy dienes. | LitMetric

The first uncatalyzed, diastereoselective vinylogous Mukaiyama aldol reaction is reported, between pyrrole/furan-based dienoxy silanes and aromatic aldehydes on salty water/methanol medium, at almost human body temperature, under ultrasonic irradiation. With pyrrole dienes the reaction is anti-selective, while that of furan dienes is syn-selective. The dual role of water as both reaction medium and promoter is highlighted.

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http://dx.doi.org/10.1021/jo101799eDOI Listing

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