Question
Organic compound A(C3H8O) gives brisk effervescence with Na metal and on reaction with Cu at 573 K gives B (C3H6O). Compound B gives a yellow ppt. with I2 and alkali B on reaction with semicarbazide gives C. what are the structures of compounds A, B and C? Write all reactions involved.
Solution
Organic compound A is an alcohol as it gives a reaction with Na metal and contains one oxygen.
B is either an aldehyde or ketone but as it gives yellow ppt. with I2/NaOH, it is a ketone, CH3COCH3. Therefore A is a secondary alcohol.
