Title: Synthesis and characterization of α-methoxyformyl-γ-butyrolactone and α-carbethoxy-γ-butyrolactone
Abstract: α-Methoxyformyl-γ-butyrolactone and α-carbethoxy-γ-butyrolactone were synthesized using γ-butyrolactone as raw material with dimethyl carbonate and diethyl carbonate by the chemical activity of α-hydrogen under sodium hydride respectively. The influence of reaction temperature,reaction time,reactant ratio and catalyst dosage on product yield were studied. The result showed that the optimum reaction conditions were as follows: α-methoxyformyl-γ-butyrolactone: reaction temperature 25 ℃,reaction time 3 h,n( γ-butyrolactone) ∶ n( dimethyl carbonate) = 1 ∶ 1. 5,the amount of catalyst was 0. 3 mol,the yield of the product was ≥85%; α-carbethoxy-γ-butyrolactone: reaction temperature 30 ℃,reaction time 4 h, n( γ-butyrolactone) ∶ n( diethyl carbonate) = 1 ∶ 2,the amount of catalyst was 0. 3 mol,the yield of the product was ≥76%. The products were characterized by1H NMR and FTIR.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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