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phosphite ligand Modified Supported Rhodium Catalyst for Hydroformylation of Internal Olefins to Linear Aldehydes

Chemical Research in Chinese Universities 2009年第5期25卷 738-739页

作者： LI Xian-ming DING Yun-jie JIAO Oui-ping LI Jing-wei YAN Li ZHU He-jun Laboratory of Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P R. China State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P R. China Graduate School of Chinese Academy of Sciences Beijing 100049 P R. China

A phosphite ligand modified heterogeneous catalyst was developed for the hydroformylation of internal olefins to linear aldehydes, which showed a high activity and high regioselectivity and could be separated easily by filtration after reaction in an autoclave. Three nanoporous silica sieves were used to investigate the influence of pore structure and shape selective performance of support on the regioselectivity to the linear products.

关键词： phosphite ligand Hydroformylation Internal olefin Shape selective performance

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Synthesis of Novel Tartaric Acid-derived Chiral phosphite ligands and Their Application in the Cu-catalyzed Conjugate Addition of Diethylzinc to Cyclic Enones

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Chemical Research in Chinese Universities 2015年第5期31卷 756-760页

作者： PANG Zengbo XING Aiping WANG Lailai State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 P R. China University of Chinese Academy of Sciences Beo'ing 100039 P. R. China

Five novel tropos （3R,4R）- and/or （3S,4S）-N-benzyltartarimide-derived biphenylphosphite ligands were synthesized and applied in the Cu-catalyzed asymmetric conjugate addition of diethylzinc to cyclic enones with up to 75% e.e. Compared with the reported ligand 1-N-benzylpyrrolidine-3,4-bis[（R）-1,1＇-binaphthyl-2,2＇-diyl]phosphite- L-tartaric acid, the issue that L-（＋）-tartaric acid backbone and （R）-binaphthyl showed strong matched/mismatched character was solved with these tropos ligands. It was found that the enantioselectivity was mainly controlled by the absolute configuration of N-benzyltartarimide backbone, and both enantiomers of the addition products can be obtained by simply changing the configuration of N-benzyltartarimide substituent.

关键词： L-(+)- and/or D-(-)-tartaric acid phosphite ligand 1,4-Conjugate addition Copper salt Cyclic enone

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