01391nas a2200169   4500008004100000245009900041210006900140260000800209300001300217490000800230520076700238100001901005700002701024700002701051700001901078856012401097       2018                        eng d00aModulation of reactivity of singlet radical pair in continuous flow: photo-fries rearrangement0 aModulation of reactivity of singlet radical pair in continuous f  cJUN  a 316-3210 v3643 a<p>Photo-Fries rearrangement of phenyl benzoate is studied using continuous flow for modulating the reactivity of singlet radical pair by changing the viscosity of the solvent. The effect of flow and proximity of the reactants with the light source on the reactivity of radical pair, formed from singlet excited state was investigated in details. In non-viscous solvent, the results from flow synthesis were comparable to batch reactor. In viscous solvents, selectivity of ortho- and para-isomers (o-/p- isomer) of the product could be controlled by changing viscosity as well as the flow rate. Using flow synthesis, ortho- and para-isomer ratio was obtained as high as 8.45 which are twice as compared to batch experiment with in fraction of residence time.</p>1 aKarjule, Neeta1 aSharma, Mrityunjay, K.1 aNithyanandhan, Jayaraj1 aKulkarni, Amol  uhttps://library.ncl.res.in/content/modulation-reactivity-singlet-radical-pair-continuous-flow-photo-fries-rearrangement