What Products Are Expected to Be Formed Upon Subjecting L-Erythrose

question 22

Essay

What products are expected to be formed upon subjecting l-erythrose (shown below)to the following reaction sequence? (Draw Fischer projection formulas)
i)HCN; ii)Ba(OH)₂; iii)H₃O⁺; iv)Na(Hg),H₂O,pH 3-5

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