Yan Yan Li⁺,^[a] Tian-Ya He⁺,^{[a, b]} Rui-Rong Dai,^[a] Yong-Liang Huang,^[a] Xiao-Ping Zhou,*^[a] Tianfeng Chen,*^[a] and Dan Li*^[a]

Abstract: A family of gyroidal metal–organic frameworks (STUs) composited with transition metal ions and bi-imidazolate ligands (BIm) were prepared and applied as both Lewis base and acid catalysts. Benefiting from the intrinsic basicity of the ligands and the Lewis acidic sites of the open metal centres, the STUs materials show excellent catalytic activities as Lewis base for the Knoevenagel condensation reactionbetween various aldehydes and malononitrile, and as Lewis acid for cyanosilylation reactions. Among these STUs, STU-4 (Ni(BIm)) shows the best catalytic efficiency (conversions >99%) in both Knoevenagel condensation and cyanosilylation reactions under mild conditions, providing thus an advanced material for both Lewis base and Lewis acid catalysis.

文章链接：Chem Asian J 2019 3682.pdf