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研究了碳基固体酸催化邻苯二酚与环己酮、丁酮、丙酮、丙醛、丁醛、异丁醛、戊醛、异戊醛、正己醛、正辛醛、苯甲醛、二苯甲酮等十余种醛(酮)的缩合反应生成1,3-苯并二噁茂烷。考察了反应时间、酚与醛(酮)的配比、碳基固体酸用量等因素对邻苯二酚与醛(酮)反应的影响。结果表明,当醛(酮)与邻苯二酚的量比为1∶1.5,催化剂用量为2.5g/mol醛(酮),反应1.5h,选择性一般在97%以上,转化率也一般在91%,以上表明,碳基固体酸对邻苯二酚与醛(酮)的反应有较好的催化性能。
Carbon-based solid acids were used to catalyze the reaction of catechol with cyclohexanone, butanone, acetone, propionaldehyde, butyraldehyde, isobutyraldehyde, pentanal, isovaleraldehyde, n-hexanal, n-octanal, benzaldehyde, Methanone more than 10 kinds of aldehydes (ketones) condensation reaction of 1,3-benzodioxolane. The effects of reaction time, the ratio of phenol and aldehyde (ketone), the amount of carbon-based solid acid on the reaction of catechol and aldehyde (ketone) were investigated. The results showed that when the molar ratio of aldehyde (ketone) to catechol was 1: 1.5, the amount of catalyst was 2.5g / mol aldehyde (ketone) and the reaction time was 1.5h, the selectivity was generally above 97% 91%, the above shows that the carbon-based solid acid catechol and aldehyde (ketone) reaction has good catalytic performance.