21. In the following reaction,
the absolute configurations of the chiral centres in X and Y are
the absolute configurations of the chiral centres in X and Y are
22. The reaction between X and Y to give Z proceeds via
23. The IR stretching frequencies (cm-1) for the compound X are as follows: 3300-3500 (s, br); 3000 (m); 2225 (s); 1680 (s).
The correct assignment of the absorption bands is
The correct assignment of the absorption bands is
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