01082nas a2200157   4500008004100000022001400041245007000055210006900125260007100194300001400265490000700279520050800286100001700794700001600811856009700827       2012                        eng d  a0022-326300aProbing the mechanism of baylis-hillman reaction in ionic liquids0 aProbing the mechanism of baylishillman reaction in ionic liquids  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcOCT  a8775-87790 v773 a<p>The kinetic data for a Baylis-Hillman reaction in certain ionic liquids possessing ethylsulfate anion [EtSO4](-) demonstrate that the rate determining step (RIDS) is second order in aldehyde, but first order in acrylate and DABCO. This observation is similar to the one made by McQuade et al., who carried out this reaction in an aprotic polar solvent like DMSO. However, this is in contrast to the general observation that ADS is first order in aldehyde, acrylate, and DABCO in organic solvents.</p>1 aSingh, Anshu1 aKumar, Anil  uhttps://library.ncl.res.in/content/probing-mechanism-baylis-hillman-reaction-ionic-liquids-001747nas a2200157   4500008004100000022001400041245009100055210006900146260011000215300001400325490000600339520109300345100001701438700001601455856011801471       2015                        eng d  a2046-206900aKinetic and mechanistic investigations of the Baylis-Hillman reaction in ionic liquids0 aKinetic and mechanistic investigations of the BaylisHillman reac  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV  a2994-30040 v53 a<p>We report here a quantitative study of the kinetics and mechanism of the Baylis-Hillman reaction in the presence of ionic liquids as solvent media. Apparently, a simple Baylis-Hillman reaction can occur by two different exclusive mechanisms in ionic liquids. The delicate balance of these mechanisms is maintained by the ionic environment employed. The main features of the possible mechanism have been described here along with interesting kinetic consequences. The measurement of rate constants and activation energy parameters demonstrate that as the medium becomes basic, the order of the reaction changes from 1 to 2. An unexpected change in the mechanism of the reaction is observed with a change in the nature of the ionic liquid. The Linear Solvation Energy Relationship has also been used as an investigating tool to delineate the respective contributions of the cation and anion of the ionic liquid. The observation strongly dictates the dependency of the mechanism of the Baylis-Hillman reaction on the nature of the anion of the ionic liquids undertaken for this study.</p>1 aSingh, Anshu1 aKumar, Anil  uhttps://library.ncl.res.in/content/kinetic-and-mechanistic-investigations-baylis-hillman-reaction-ionic-liquids-001312nas a2200145   4500008004100000245007400041210006900115260000800184300001400192490000600206520082200212100001701034700001601051856009901067       2018                        eng d00aBenzoin condensation: a kinetic monitoring at the oil-water interface0 aBenzoin condensation a kinetic monitoring at the oilwater interf  cMAY  a4694-46980 v33 aThe overall kinetics of condensation of benzaldehyde to benzoin has been discussed here with an aim to develop a better understanding of the change in reactivity of the interfacial reaction in the presence of co-solvents. A key aspect of the 'on water' reaction is the chemistry between solvent and reactants that occur at the oil-water interface. In particular the orientation of water molecules at the interface plays a key role in catalyzing the reaction. An initial increase in the rate constants of reaction is observed, followed by sharp fall in the reaction kinetics. An interesting interplay of hydrophobicity, hydrogen bonding and polarity of the binary mixture is inevitable in the present study. The observations are nevertheless important reference point for future investigations of 'on water' reactions.1 aSingh, Anshu1 aKumar, Anil  uhttps://library.ncl.res.in/content/benzoin-condensation-kinetic-monitoring-oil-water-interface