00000ctm a22000007a 4500 UP-1685523046125413680 Buklod 20230503092606.0 m |o d | ta 071031s xx d r |||| u| (iLib)UPMNL-00000055022 UPM PHARM eng LG 996 1972 C5 L56 Lim, Remedios Abella Preparation and structural elucidation of 2-Acetoxy-methyl-5-tert.-butyl furan from sucrose Remedios Abella-Lim. 113 leaves Available to the general public. Thesis (Doctor of Philosophy in Chemistry)--University of Santo Tomas, August 1972. A non-food product from sucrose, 2-acetoxy-methyl-5-tertiary-butyl furan has been prepared through a series of reactions. The course of the chemical reactions involved is characterized through the intermediates. Classical tests, NMR spectroscopy and IR spectroscopy furnished compelling evidences for the following intermediates and final product in the reaction series: 1) 5-methyl-2-furfuryl alcohol 2) 2-acetoxy-methyl-5-methyl furan 3) 5-acetoxy-methyl-2-furoic acid 4) 2-acetoxy-methyl furan 5)2-acetoxymethyl-5-tert.-butyl furan. The first stage of synthesis which involved essentally the preparative method of Rinkes, led to the formation of 5-methyl-2-furfuryl alcohol. Detailed structural characterization of the final product is discussed and detailed mechanistic steps are proposed for the conversion of sucrose to 2-acetoxy-methyl-5-tert.-butyl furan. Sucrose. Furans. Intermediates (Chemistry) FI UP UPMNL PHARM LG 996 1972 C5 L56 Thesis