Double bonds of internal olefins can be efficiently migrated to the terminal carbons and regioselectively hydroesterified with formates in the presence of Pd(OAc)_(2) and 1,2-DTBPMB under mild reaction conditions,prov...Double bonds of internal olefins can be efficiently migrated to the terminal carbons and regioselectively hydroesterified with formates in the presence of Pd(OAc)_(2) and 1,2-DTBPMB under mild reaction conditions,providing a wide variety of corresponding linear carboxylic esters bearing various functional groups in good yields and>20:1 linear/branch ratios.The reaction is optionally simple and does not need to use CO gas and acid co-catalysts.展开更多
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 b...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.展开更多
This work describes an effective Pd-catalyzed isomerization-hydroformylation of internal olefins with HCO_(2)H and N-formylsaccharin,providing a wide variety of linear aldehydes in up to 72%yield with up to 18:1 l/b r...This work describes an effective Pd-catalyzed isomerization-hydroformylation of internal olefins with HCO_(2)H and N-formylsaccharin,providing a wide variety of linear aldehydes in up to 72%yield with up to 18:1 l/b ratio.The olefin substrate can bear various functional groups.Conjugated olefins can also be efficiently isomerized and hydroformylated.The reaction is easy to operate and requires no handling of CO and H_(2).To the best of our knowledge,the current process represents the first example for Pd-catalyzed efficient isomerization-hydroformylation process of internal olefins to predominately give linear aldehydes.展开更多
A phosphite ligand modified Rh/SiO2 catalyst has been developed for hydroformylation of internal olefins to linear aldehydes, which showed high activity and regioselectivity and could be separated easily by filtration...A phosphite ligand modified Rh/SiO2 catalyst has been developed for hydroformylation of internal olefins to linear aldehydes, which showed high activity and regioselectivity and could be separated easily by filtration after reaction in an autoclave. Effects of reaction temperature and syngas pressure on the performances of the catalyst in the reaction were also investigated.展开更多
基金financial support from the National Natural Science Foundation of China(Nos.22271024,21632005)Changzhou University.
文摘Double bonds of internal olefins can be efficiently migrated to the terminal carbons and regioselectively hydroesterified with formates in the presence of Pd(OAc)_(2) and 1,2-DTBPMB under mild reaction conditions,providing a wide variety of corresponding linear carboxylic esters bearing various functional groups in good yields and>20:1 linear/branch ratios.The reaction is optionally simple and does not need to use CO gas and acid co-catalysts.
基金Supported by the Ministry of Science and Technology of China(No.2009CB623503)
文摘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.
基金supported by the National Natural Science Foundation of China(22271024,21632005)the Natural Science Foundation of Jiangsu Province(BK20190929)Changzhou University.
文摘This work describes an effective Pd-catalyzed isomerization-hydroformylation of internal olefins with HCO_(2)H and N-formylsaccharin,providing a wide variety of linear aldehydes in up to 72%yield with up to 18:1 l/b ratio.The olefin substrate can bear various functional groups.Conjugated olefins can also be efficiently isomerized and hydroformylated.The reaction is easy to operate and requires no handling of CO and H_(2).To the best of our knowledge,the current process represents the first example for Pd-catalyzed efficient isomerization-hydroformylation process of internal olefins to predominately give linear aldehydes.
基金supported by the National Key Fundamental Research Development Plan("973"Plan,No.2009CB623503)
文摘A phosphite ligand modified Rh/SiO2 catalyst has been developed for hydroformylation of internal olefins to linear aldehydes, which showed high activity and regioselectivity and could be separated easily by filtration after reaction in an autoclave. Effects of reaction temperature and syngas pressure on the performances of the catalyst in the reaction were also investigated.
