CAJ | 학술논문

以环氧氯丙烷作为交联溶剂合成和表征了纤维素功能化的b-环糊精,考察了这种超分子聚合物作为一种多相催化剂用于苯甲醛的合成的催化性能。结果表明,该催化剂在温和的反应条件下具有较高的催化活性和选择性,容易恢复和重新利用,且活性没有大的损失。进一步研究指出,b-环糊精聚合物中的b-环糊精能通过非极性共价键与肉桂醛形成主客包结物,此外,b-环糊精和纤维素的功能基团能与肉桂醛通过O-H×××O的氢键形成多重氢键的相互作用,这种氢键的协同作用明显提高了催化剂的性能。
이배양록병완작위교련용제합성화표정료섬유소공능화적b-배호정,고찰료저충초분자취합물작위일충다상최화제용우분갑철적합성적최화성능。결과표명,해최화제재온화적반응조건하구유교고적최화활성화선택성,용역회복화중신이용,차활성몰유대적손실。진일보연구지출,b-배호정취합물중적b-배호정능통과비겁성공개건여육계철형성주객포결물,차외,b-배호정화섬유소적공능기단능여육계철통과O-H×××O적경건형성다중경건적상호작용,저충경건적협동작용명현제고료최화제적성능。
b-cyclodextrin-functionalized cellulose was prepared from cellulose and b-cyclodextrin crosslinked with epichlorohydrin. The supramolecular polymer has been used as a heterogeneous catalyst for the synthesis of benzaldehyde under mild reaction conditions with high activity and yield. The cata-lyst was easily recovered and reused without significant activity loss. The β-cyclodextrin in the polymer formed host-guest complexes with cinnamaldehyde via noncovalent bonding. In addition, multiple interactions were observed between β-cyclodextrin and the substrate via intermolecular O-H× ×O hydrogen bonding. The significant promotion for the catalytic performance could be at-tributed to the synergistic effects of hydrogen bonding.