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Raney-nickel®-catalyzed 1 H→ 2 H isotopic exchange in non-reducing carbohydrates is conducted under mild conditions using ultrasonic irradiation. The initial and overall rates of isotopic exchange are modulated by the presence of transition metals, either in the initial alloy melt or subsequently plated onto the digested catalyst. Only the Raney-nickel® type alloys afforded stereospecific...