At optimum conditions 35℃,the mole ratio 1.5∶1∶2.5 of o ethoxyphenol,glyoxylic acid and sodium hydroxide,the yield of 3 ethoxy 4 hydroxyamldalinic acid was up to 88.6%.The electrolysis was carried out in an undivid...At optimum conditions 35℃,the mole ratio 1.5∶1∶2.5 of o ethoxyphenol,glyoxylic acid and sodium hydroxide,the yield of 3 ethoxy 4 hydroxyamldalinic acid was up to 88.6%.The electrolysis was carried out in an undivided cell with the anode graphite and the cathode nickel.The appropriate conditions were as follow;reaction temperature 60℃,current density 0.15 A/dm 2,concentration of caustic alkali 6%.The yield of ethylvanillin was 90.0% .展开更多
文摘At optimum conditions 35℃,the mole ratio 1.5∶1∶2.5 of o ethoxyphenol,glyoxylic acid and sodium hydroxide,the yield of 3 ethoxy 4 hydroxyamldalinic acid was up to 88.6%.The electrolysis was carried out in an undivided cell with the anode graphite and the cathode nickel.The appropriate conditions were as follow;reaction temperature 60℃,current density 0.15 A/dm 2,concentration of caustic alkali 6%.The yield of ethylvanillin was 90.0% .
