Abstract��
2-Methylallylidene diacetate(DMA) has been synthesized from methacrolein(MAL) and acetic anhydride using strongly acidic cation-exchanger resin as catalyst.The effect of amount of the catalyst,molar ratio of raw materials,reaction temperature and reaction time on the reaction were observed,the optimum conditions were n((CH_3CO)_2O)��n(MAL)=1.2��1.0,amount of strong acidic cation-exchanger resin 2.0 g(per molar MAL),reaction temperature(-10 ��) and reaction time 5 h.Under these conditions,the conversion of MAL was 95.5%,the selectivity and yield of DMA were 95.7% and 91.4%.The structure of product was identified by IR,the IR spectra of the product agreed with the standard IR spectra of DMA.
WANG Bao-he,ZHANG Hao-jian,LI Yun-li,JING Xin.New Process for Synthesis of 2-Methylallylidene Diacetate[J]. Chemcial Industry and Engineering, 2008,25(1): 48-51
2008, Vol. 25 
