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近年来由于化学工业的蓬勃发展,大大增加了对糠醛和呋喃化合物的需要。众所周知,糠醛是由含有丰富的多聚戊糖的农林植物废料经水解生产而制取的。只有一个材料指出,可由其他方法生产糠醛的可能——氧化脂肪系的二烯。在呋喃衍生物巾,只有四氢呋喃不仅可以由糠醛合成,而且还有其他途径。例如,由氯丁橡胶生产的废料——二氯丁烷合成,或按 Penne 法制取,或者用氢化顺丁烯二酸酐的方法。国外糠醛生产在最近十年中增长了一倍,按1972年资料年产量在十万吨以上,而且
In recent years, due to the vigorous development of the chemical industry, the demand for furfural and furan compounds has been greatly increased. It is well-known that furfural is produced by the hydrolysis of agricultural and forest plant wastes, which are rich in polypentose. Only one material pointed out that the possibility of furfural production by other methods - oxidized aliphatic diene. In the furan derivative towel, only tetrahydrofuran can be synthesized not only from furfural but also other ways. For example, the waste produced from neoprene rubber, dichlorobutane, is either synthesized by the Penne method or hydrogenated maleic anhydride. Foreign furfural production has doubled in the last ten years. According to the 1972 data, the annual output was over 100,000 tons, and