1.

Aldohexose reacts with acetone in H_(2)SO_(4) to form cyclic ketal. Necessary condition to form cyclic ketal is that two OH groups must be in cis (syn) position. Compound (D) reacts with 2 mol fo acetone to form cyclicdiketal, as shown below. Which statement(s) is//are correct about (E)?

Answer»

Both CYCLIC KETALS have five-membered ring.
Both cyclic ketals have six-membered ring.
Cyclic ketals FORMED between `C-2` and `C-3` have five-membered ring.
Cyclic ketals formed between `C-4` and `C-6` have six-membered ring.

Answer :C::D


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