A hydrocarbon $C X_{6} H X_{10}$ undergoes a Diels-Alder reaction with maleic anhydride. Its reductive ozonolysis gives only methanal and butane-2,3-dione. The hydrocarbon is:

AHexa-1,3-diene
BHexa-1,5-diene
C2,3-Dimethylbuta-1,3-diene
DCyclohexa-1,3-diene

Answer: C

CH X_{2} = C (CH X_{3}) - C (CH X_{3}) = CH X_{2}

is conjugated and on cleavage gives 2

HCHO

and

CH X_{3} CO - COCH X_{3}

. Hexa-1,3-diene would give propanal and glyoxal as well as methanal. Hexa-1,5-diene is not conjugated and gives butanedial. Cyclohexa-1,3-diene gives glyoxal and butanedial.

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A hydrocarbon CX6​HX10​ undergoes a Diels-Alder reaction with maleic anhydride. Its reductive ozonolysis gives only methanal and butane-2,3-dione. The hydrocarbon is:

Answer: C

More questions on Conjugated dienes and Diels-Alder reaction

A hydrocarbon $C X_{6} H X_{10}$ undergoes a Diels-Alder reaction with maleic anhydride. Its reductive ozonolysis gives only methanal and butane-2,3-dione. The hydrocarbon is: