title: Direct and post-synthesis incorporation of chiral metallosalen catalysts into metal-organic frameworks for asymmetric organic transformations.
abstract: Two chiral porous metal-organic frameworks (MOFs) were constructed from [VO(salen)]-derived dicarboxylate and dipyridine bridging ligands. After oxidation of V(IV) to V(V) , they were found to be highly effective, recyclable, and reusable heterogeneous catalysts for the asymmetric cyanosilylation of aldehydes with up to 95 % ee. Solvent-assisted linker exchange (SALE) treatment of the pillared-layer MOF with [Cr(salen)Cl]- or [Al(salen)Cl]-derived dipyridine ligands led to the formation of mixed-linker metallosalen-based frameworks and incorporation of [Cr(salen)] enabled its use as a heterogeneous catalyst in the asymmetric epoxide ring-opening reaction.
authors.affiliation: School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240 (P. R. China).
authors.forename: Weiqin
authors.initials: W
authors.lastname: Xi
authors.affiliation: School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240 (P. R. China). liuy@sjtu.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240 (P. R. China).
authors.forename: Qingchun
authors.initials: Q
authors.lastname: Xia
authors.affiliation: School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240 (P. R. China).
authors.forename: Zijian
authors.initials: Z
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240 (P. R. China). yongcui@sjtu.edu.cn.|Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072 (P. R. China). yongcui@sjtu.edu.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Cui
keywords: asymmetric catalysis; chirality; linker exchange; metal-organic frameworks; vanadium