Catalysis by Organic Solids. Stereoselective Diels−Alder Reactions Promoted by Microporous Molecular Crystals Having an Extensive Hydrogen-Bonded Network
作者:Ken Endo、Takashi Koike、Tomoya Sawaki、Osamu Hayashida、Hideki Masuda、Yasuhiro Aoyama
DOI:10.1021/ja964198s
日期:1997.5.1
network material shows a novel catalysis in the solid state for the acrolein−cyclohexadiene Diels−Alder reaction. The suggested mechanism involves a catalytic cycle composed of sorption of the reactants in the cavities of polycrystalline host 1, preorganized intracavity reaction, and desorption of the product. The host also promotes stereoselective intracavity reactions for alkyl acrylates and cyclohexadiene
蒽双间苯二酚衍生物 1 作为一种有机网络材料,在固态下对丙烯醛-环己二烯 Diels-Alder 反应具有新的催化作用。建议的机制涉及催化循环,包括反应物在多晶主体 1 的腔中的吸附、预先组织的腔内反应和产物的解吸。主体还促进丙烯酸烷基酯和环己二烯的立体选择性腔内反应,但在这种情况下,不是以催化方式。本系统作为沸石的功能性有机类似物的相关性根据各个元素过程的动力学和催化剂粉化的影响以及X射线晶体结构进行了讨论。