Chain extension of ()-arabinose by way of its derived cyanohydrin gave a mixture of

Chapter 23, Problem 23.46

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Chain extension of ()-arabinose by way of its derived cyanohydrin gave a mixture of (+)-glucose and (+)-mannose. Based on this observation and your answer to the preceding problem, which pairs are possible for (+)-mannose and (+)-glucose? Pair 1 CH O H OH H OH H OH H OH CH2OH CH O HO H H OH H OH H OH CH2OH Pair 2 CH O H OH H OH HO H H OH CH2OH CH O HO HO H H OH H H OH CH2OH Pair 3 CH O H OH H HO H OH H OH CH2OH CH O HO HO H H OH H H OH CH2OH Pair 4 CH O H OH HO H HO H H OH CH2OH CH O HO HO HO H H H H OH CH2OH A. Pair 1 and pair 2 D. Pair 2 and pair 3 B. Pair 1 and pair 3 E. Pair 2 and pair 4 C. Pair 1 and pair 4 F. Pair 3 and pair 4

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