リモネンジオールと炭酸ジメチルとの反応挙動の評価

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  • Study on the reaction behavior of limonenediols and dimethyl carbonate
  • リモネンジオール ト タンサン ジメチル ト ノ ハンノウ キョドウ ノ ヒョウカ

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To develop biomass-derived chemicals, reaction behavior of dimethyl carbonate (DMC) with four types of limonene-1,2-diol (LMdiol) was studied in the presence of catalysts such as 4-dimethylaminopyridine. Each of the reaction was carried out without any addition of organic solvents at 90℃ for 6-48 hours, in which the feed molar ratio of LMdiol : DMC : catalyst was fixed to 1.0 : 2.0 : 0.2. In all cases, the reactions produced no polymeric products, poly(limonene carbonate). The 1H NMR spectroscopic analysis revealed that the reaction products were dependent on the stereochemical configuration at two hydroxy groups of starting LMdiols, resulting in formation of the corresponding fused five-membered cyclic carbonates, monoalcohol-monocarbonate, and trans-limonene oxide.

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