The water-soluble ruthenium allenylidene complex [{RuCl(?-Cl)(C=C=CPh2)(TPPMS)2}2]Na4 catalyses the selective transformation of substituted linear and cyclic vinyl ethers with MeOH, under mild non acidic conditions, to give acetals, while aldehydes and ketones are obtained in a CHCl3/H2O mixture, which allows for easy recycling of the catalyst. NMR studies showed that the reaction follows a transetherification mechanism rather than simple acid-catalysed hydrolysis
Ruthenium-catalysed selective transetherification of substituted vinyl ethers to acetals and aldehydes
Gonsalvi, Luca;Peruzzini, Maurizio
2003
Abstract
The water-soluble ruthenium allenylidene complex [{RuCl(?-Cl)(C=C=CPh2)(TPPMS)2}2]Na4 catalyses the selective transformation of substituted linear and cyclic vinyl ethers with MeOH, under mild non acidic conditions, to give acetals, while aldehydes and ketones are obtained in a CHCl3/H2O mixture, which allows for easy recycling of the catalyst. NMR studies showed that the reaction follows a transetherification mechanism rather than simple acid-catalysed hydrolysisFile in questo prodotto:
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Descrizione: Ruthenium-catalysed selective transetherification of substituted vinyl ethers to acetals and aldehydes
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