Direct expedited conversion of biopolymer alginic acid into the industrially significant compound, furfural, was accomplished using copper (II) salts in various aqueous biphasic systems of defined volume ratios involving successively cyclopentylmethyl ether (CPME), 2-methyltetrahydrofuran (MeTHF) and methylisobutylketone (MIBK); microwave irradiation help perform the reaction at temperatures of ∼200 °C expeditiously in a minute. The deployment of minimum amount of CuCl₂ under the optimized conditions afforded furfural in 28, 30 and 31% yields in CPME, MeTHF and MIBK, respectively. However, using the same optimized conditions, both water-soluble and insoluble oligomeric fractions, generated from the pre-hydrolysis of alginic acid, gave furfural in 26 and 35% yields, respectively which were on the basis of oligomers nature found in each fraction.

使用铜（II）盐在各种体积比确定的体积比的水性双相系统中依次进行环戊基甲基醚（CPME），2-甲基四氢呋喃（MeTHF）和甲基异丁基酮（MIBK），可将生物聚合物海藻酸直接加速转化为工业上重要的化合物糠醛。 ）; 微波辐射可在一分钟内在约200°C的温度下迅速进行反应。部署最小量的CuCl ₂在最佳条件下，CPME，MeTHF和MIBK的糠醛收率分别为28％，30％和31％。然而，在相同的优化条件下，由藻酸的预水解产生的水溶性和不溶性低聚物馏分的糠醛收率分别为26％和35％，这是基于每种馏分中的低聚物性质而定的。