New Supported-Grubbs Catalyst And Tartar-functionalized FDU-type Mesopolymer Solid Base Catalyzed Sharpless Reaction

Nowadays, the use of environmental-friendly immobilized heterogeneous catalysts has become an important research target for green chemistry. This dissertation is focused on two sections. The first section is focus on immobilizing SBA-15 on Grubbs catalysts and using them for RCM (ring-closing metathesis) and CM (cross metathesis). The second section is focus on immobilizing Sharpless asymmetric epoxidation reaction catalyst on FDU-14 and investigating the catalytic activity in asymmetric epoxidation reaction.SBA-15 molecular sieve is an important mesoporous silica material in recent years. It is widely used in the field of heterogeneous catalysts because of its highly ordered pore system, uniform pore size, surface area, tunable pore size, wall thickness, excellent thermal stability and hydrothermal stability. As an effective method in the formation of C=C bonds, Grubbs catalysts are widely used in organic synthesis. In the first part, a series of SBA-15 immobilized Grubbs catalysts were synthesized. The structures and properities were characterized by IR, XRD, BET and electron microscopy. The immobilized catalysts were used in RCM and CM reactions and can be easily recyclable.FDU-mesoporous phenolic resin is a new type of mesoporous materials with both merits of mesoporous materials (high surface area, larger pore orderly, tunable mesoporous structure, etc) and high oligomers (high hydrophobicity, easy modification, more acid than the silicon-based corrosion, etc). Sharpless asymmetric epoxidation reaction is a convenient, efficient, selective and well-regulated asymmetry reaction which can give epoxide with two chiral centers. In the second part, FDU-14 supported Sharpless catalyst was synthesized from L-tartar, the structures and properities were characterized by IR, XRD and BET etc. Catalytic activity was investigated in the asymmetric epoxidation of trans-2-hexenol.