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فناوری منابع زیستی
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • homogeneous acylation of eucalyptus wood at room temperature in dimethyl sulfoxide/n-methylimidazole

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    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 525
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     succinoylation and benzoylation of ball-milled eucalyptus wood using succinic anhydride and benzoyl chloride as acylating reagent, respectively, were investigated at room temperature using dimethyl sulfoxide/n-methylimidazole (dmso/nmi) as reaction medium without additional catalysts. the effects of the corresponding acylating reagent dosage (1–5:1 for succinoylation and 0.5–5:1 for benzoylation) and reaction time (0.35–5 h for succinoylation and 0.5–3 h for benzoylation) on the extent of acylation, measured by weight percent gain (wpg), were studied. wpg of succinoylation and benzoylation was in the range of 70.8–144.7% and 17.3–43.1%, respectively. the efficiency of acylation at room temperature significantly increased in dmso/nmi compared with ionic liquid 1-butyl-3-methylimidazolium chloride because of the role of nmi as solvent, base and catalyst. fourier transform infrared (ft-ir), and solid-state cross-polarization/magic-angle spinning (cp/mas) 13c nuclear magnetic resonance (nmr) spectroscopy studies provided evidence for the occurrence of succinoylation and benzoylation reactions and the attachment of functional groups via ester bonds.

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