Yang Shui-jin
2006
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Journal
Chemical Reagents
Abstract
A new environmentally friendly catalyst,I_2/PAn was prepared.2,4-Dimethyl-2-ethoxycarbonylmethyl-1,3-dioxolane(1) was synthesized from ethyl acetoacetate(2) and 1,2-propanediol(3) in the presence of I_2/PAn(4).Factors influencing the yield were discussed and the best conditions found.Experimental result showed that 4 was an excellent catalyst.With(n(2)∶)n(3)=1.0∶1.6,w(4)=0.6%,and reaction time 0.75h,the yield of 1 can reach 80.9%.