02278nas a2200241   4500008004100000022001400041245009300055210006900148260000800217300001400225490000600239520147500245653003001720653002401750653001801774653003101792653001201823100001801835700002001853700002001873700002501893856011801918       2018                        eng d  a2365-654900aCascade synthesis of 5-(Acetoxymethyl) furfural from carbohydrates over Sn-mont catalyst0 aCascade synthesis of 5Acetoxymethyl furfural from carbohydrates   cAUG  a8770-87780 v33 a<p>The 5-(Acetoxymethyl)furfural (AcMF) is emerged as an important alternative for 5-(hydroxymethyl)furfural (HMF). It is also a starting material for those products which are typically prepared from HMF. The growing importance of AcMF encouraged us to prepare it directly from cheap and abundant carbohydrates. The production AcMF from glucose and glucose-like carbohydrates is an exigent assignment, owing to tough isomerisation of glucose to fructose. The Sn-Mont catalyst having a unique combination of Lewis as well as Bronsted acid sites was employed for direct glucose conversion into AcMF. Lewis acid sites of Sn-Mont facilitate the isomerisation of glucose to fructose. At the same time, dehydrative-esterification of fructose to AcMF is catalyzed by Bronsted acid sites of Sn-Mont. Different concentrations of Sn containing Sn-Mont catalysts were by prepared mixing montmorillonite clay with different molar concentration (e.g. 0.1 M-0.4 M) of aqueous solutions of SnCl4 center dot 5H(2)O. AcMF was produced in as high as 43% yield directly from glucose over Sn-Mont(0.3 M) catalyst owing to its highest acid strength. The efficacy of Sn-Mont(0.3 M) catalyst was also probed for sucrose and fructose that resulted in 53% and 58% yield of AcMF, respectively. The critical properties of all the prepared Sn-Mont catalysts were investigated through XRD, BET surface area, ICP-OES, temperature-programmed desorption of NH3 and pyridine-FTIR and XPS techniques.</p>10a5-(Acetoxymethyl)furfural10aBronsted/Lewis acid10acarbohydrates10aDehydrative-esterification10aSn-Mont1 aShinde, Suhas1 aDeval, Kashmira1 aChikate, Rajeev1 aRode, Chandrashekhar  uhttps://library.ncl.res.in/content/cascade-synthesis-5-acetoxymethyl-furfural-carbohydrates-over-sn-mont-catalyst