01736nas a2200181   4500008004100000022001400041245013100055210006900186260011000255300001600365490000600381520094500387100002501332700002101357700002001378700002501398856013101423       2014                        eng d  a2046-206900aRole of cation-anion cooperation in the selective synthesis of glycidol from glycerol using DABCO-DMC ionic liquid as catalyst0 aRole of cationanion cooperation in the selective synthesis of gl  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUL  a32127-321330 v43 a<p>Transesterification of dimethyl carbonate with glycerol has been investigated using 1,4-diazabicyclo [2.2.2] octane (DABCO) based ionic liquid as a catalyst. DABCO reacted with dimethyl carbonate to form ionic liquid as the reaction progressed. Though the basicity of DABCO based ionic liquid was lower than that of DABCO, the catalytic activity and selectivity to glycidol was higher with DABCO based ionic liquid as a catalyst, indicating that basicity may not be the only criterion in deciding activity and selectivity of the reaction. The cooperative effect of the cation and anion of the ionic liquid is responsible for the observed results. The best results (97% glycerol conversion with 83% selectivity to glycidol and 17% selectivity to glycerol carbonate) were obtained using DABCO based ionic liquid as a catalyst. A plausible mechanism involving the role of both the cation and anion of the ionic liquid has been proposed.</p>1 aMunshi, Mudassir, K.1 aGade, Swapna, M.1 aRane, Vilas, H.1 aKelkar, Ashutosh, A.  uhttps://library.ncl.res.in/content/role-cation-anion-cooperation-selective-synthesis-glycidol-glycerol-using-dabco-dmc-ionic-0