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- W2352915867 abstract "Synthesis of γ-undecalactone from undecylenic acid was improved.The supports of barium polyethylenepolyamino-N-ethylphosphonate were prepared by dispersion of metal K on the supports after being treated with 5% KOH solution,and brand-new support-KOH-K-PhK solid superbases were prepared.The influence of quantity of catalyst,the proportion of reagents,reaction temperature on yield was studied and the optimum technological conditions were:n(undecylenic acid)∶n(1,4-dioxane)=1.0∶1.0,the amount of catalysts was 3%(base on the mass of undecylenic acid) and the reaction is further for 2.0 h at(60±2)℃ when the reaction is close to the end point.under these conditions the yield of γ-undecalactone was over 78% by GC analysis,and the catalyst can be reused for more than five times and easy to be regenerated,it was a type of environmental friendly catalysts." @default.
- W2352915867 created "2016-06-24" @default.
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- W2352915867 date "2006-01-01" @default.
- W2352915867 modified "2023-09-23" @default.
- W2352915867 title "Synthesis of γ-undecalactone catalyzed by a new type of superbase supported on barium phosphonate" @default.
- W2352915867 hasPublicationYear "2006" @default.
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