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NI IMPREGNATED INTO HYPERCROSSLINKED POLYSTYRENE IN N-METHYL-D-GLUCOSAMINE SYNTHESIS
Abstract
D-glucose simultaneous catalytic hydro condensation with methylamine can beconsidered a promising way of methylglucamine synthesis. Amines such asmethylamine are reacted with materials such as reducing sugars in hydroxy solventssuch as methanol to prepare N-alkyl polyhydroxy amines. Accordingly, glucose isreacted with methylamine and the resulting adduct is hydrogenated to yield N-methylglucamine. The production of N-methylglucamine as early as 1935 was patentedby American scientists Robert B. Flint and Paul L. Salsberg, the rightful owner is thelarge chemical company E. I. du Pont de Nemours & Company. The reaction for theproduction of N-methylglucamine by reductive amination proceeds in one step. Here anovel approach to the one-step N-Methyl-D-glucosamine synthesis using heterogeneouscatalyst based on the polymeric matrix of hypercrosslinked polystyrene is reported. Theinitial catalyst activity was found to be 1.3 kg(Glu)/(kg(Cat)·h), catalysts activity after10 cycles of D-glucose transformation showed a little slowdown and was calculated tobe 1.1 kg(Glu)/(kg(Cat)·h) at 99.4-99.5% D-glucose conversion.
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