Abstract
The reaction of 1,3-hexadiyne, 1,3-heptadiyne, and 1,3-octadiyne with acetylacetone and acetoacetic ester in the presence of manganese(III) and copper(II) acetates proceeds with the participation of both triple bonds and leads to substituted 5-alkynyl- and 5-(5-furyl)furans: in the case of 5-hydroxy-5-methyl-1,3-hexadiyne the terminal triple bond participates selectively in the process as a result of the effective protection of the disubstituted triple bond by the dimethylhydroxymethyl group.
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Communication 148 in the series “Reactions of unsaturated compounds”; see [1] for Communication 147.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 738–742, June, 1989.
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Melikyan, G.G., Sargsyan, A.B. & Badanyan, S.O. Synthesis of 5-substituted furans on the basis of the reactions of 1,3-alkadiynes with Β-dicarbonyl compounds. Chem Heterocycl Compd 25, 606–609 (1989). https://doi.org/10.1007/BF00470014
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DOI: https://doi.org/10.1007/BF00470014