caa a22 4500 463251806 CHVBK 20180405153342.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10562-007-9088-7 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9088-7 Novozym 435 catalyzed regioselective acylation of ethane-1,2-diol in the presence of ionic liquids [Elektronische Daten] [Tahmina Yasmin, Tao Jiang, Buxing Han] The acylation of ethane-1,2-diol catalyzed by lipase (Novozym 435) with ethyl acetate in 1-butyl-3-methyl imidazolium hexaflorophosphate [BMIM][PF6] and 1-butyl-3-methyl imidazolium tetrafloroborate [BMIM][BF4] was studied. It was demonstrated that the activity of the enzyme in [BMIM][BF4] was very low for this reaction, while it was very active in [BMIM][PF6]. Both the equilibrium conversion and the selectivity to ethane-1,2-diol monoacetate (EDMA) in [BMIM][PF6] could be considerably higher than that at solvent-free condition. The IL and enzyme have synergetic effect to prevent thermal deactivation of the enzyme. Addition of small amount of water in [BMIM][PF6] could enhance the conversion and selectivity to EDMA. Springer Science+Business Media, LLC, 2007 ionic liquids nationallicence Novozym 435 nationallicence ethane-1 nationallicence 2-diol nationallicence transesterification nationallicence Yasmin Tahmina Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080, Beijing, China aut Jiang Tao Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080, Beijing, China aut Han Buxing Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080, Beijing, China aut Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 116/1-2(2007-07-01), 46-49 1011-372X 116:1-2<46 2007 116 10562 https://doi.org/10.1007/s10562-007-9088-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9088-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yasmin Tahmina Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080, Beijing, China aut NATIONALLICENCE 700 1- Jiang Tao Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080, Beijing, China aut NATIONALLICENCE 700 1- Han Buxing Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100080, Beijing, China aut NATIONALLICENCE 773 0- Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 116/1-2(2007-07-01), 46-49 1011-372X 116:1-2<46 2007 116 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer