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Cobalt(II) chloride catalysed condensation of acetoacetate with vinylethers

โœ Scribed by Javed Iqbal; Rajiv Ranjan Srivastava; M. Amin Khan

Book ID
104222107
Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
132 KB
Volume
31
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

Cobalt(N) chloride catalyses the diastereoselective condensation of methylacetoacetate with vinyl ethers to give 8 -alkoxy carbonyl compounds or a, B -unsaturated compounds in excellent yields. Metal promoted addition' of 1,3-dicarbonyl compounds to olefins is now a very well established method for a new carbon-carbon bond formation. The reaction between vinyl ethers Id and acetoacetates in presence of manganese(Il1) acetate leads to the formation of dihydrofurans

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