Application of monosubstituted triphenylphosphine ligands in catalytic hydroformylation
LU Jin-long1,2, LI Cun-yao3, YU Lin1, WANG Wen-long2
1. School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China; 2. School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China; 3. Division of Fossil Energy Conversion, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
Abstract: The performance of the 1-hexene hydroformylation reaction is investigated over the ligands that are formed through monosubstitution of different substituent groups at the ortho or para position of one of the benzene rings of triphenylphosphine.The results show that ortho-substituted group significantly enhances the steric effect of phosphine ligand,which on the one hand weakens the catalytic activity and on the other hand enhances the regioselectivity of the hydroformylation product aldehyde.Para-substituted group positively enhances the chemoselectivity of the ligand (selectivity of main product aldehyde) without affecting the activity.It is identified through overall evaluation that the best ligand is the triphenylphosphine ligand with monosubstituted aldehyde group at the para position,which leads to a 99% of conversion,an 80% of aldehyde selectivity and a 2.48 ratio of linear to branch.It is believed that the presence of group at para position optimizes the electronic and steric properties of the ligand.
卢锦龙, 李存耀, 余林, 汪文龙. 单取代三苯基膦配体在催化氢甲酰化中的应用[J]. 现代化工, 2022, 42(S2): 71-75.
LU Jin-long, LI Cun-yao, YU Lin, WANG Wen-long. Application of monosubstituted triphenylphosphine ligands in catalytic hydroformylation. Modern Chemical Industry, 2022, 42(S2): 71-75.
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