An unsaturated hydrocarbon 'A' adds two molecules of H 2 and on reductive ozonolysis gives butane-1, 4-dial, ethanal and propanone. Give the structure of ' A ', write its IUPAC name and explain the reactions involved.

Question

An unsaturated hydrocarbon 'A' adds two molecules of H 2 ​ and on reductive ozonolysis gives butane-1, 4-dial, ethanal and propanone. Give the structure of ' A ', write its IUPAC name and explain the reactions involved.,

MARKS App · Accepted Answer

Two molecules of hydrogen add on 'A' this shows that ' A ' is either an alkadiene or an alkyne. On reductive ozonolysis ' A ' gives three fragments, one of which is dialdehyde. Hence, the molecule has broken down at two sites. Therefore, 'A' has two double bonds. It gives the following three fragments: Hence, its structure as deduced from the three fragments must be

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