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Preparation of cyanophyll

LIU Yu-ping, SUN Bao-guo, LIANG Meng-lan, ZHAO Jin, DONG Yu (School of Chemical and Environmental Engineering,Beijing Technology and Business University,Beijing 100037,China)  
Cyanophyll was prepared by the reaction of acetal and benzyl alcohol in the presence of toluene-p-sulfonic acid as calalyst. Base upon orthogonal experimetal design,the effects on the yield against mole ratio of reactants and reaction time was investigated and the optimized reaction condition were found as: mole ratio of acetal and benzyl alcohol is 7 to 1;(reactants) for about 4 h with the removal of ethyl alcohol formed by anhydrous calcium chloride.The yield of cyanophyll is 66.6 %. The finished product was analyzed and confirmed by GC,IR and GC-MS.
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