An unknown alkene (A) reacts with 3 mole of | vedclass

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(B) The reaction of alkene $(A)$ with $3 \ mole$ of $H_2$ indicates that $(A)$ contains three degrees of unsaturation (likely three double bonds). Ozo

Vedclass · Accepted Answer

$1-$methyl$-4-$(prop$-1-$en$-2-$yl)cyclohex$-1,3-$diene

Vedclass · Answer

(B) The reaction of alkene $(A)$ with $3 \ mole$ of $H_2$ indicates that $(A)$ contains three degrees of unsaturation (likely three double bonds). Ozonolysis of $(A)$ yields $HCHO$ (formaldehyde),$OHC-CH_2-CO-CO-CH_3$ (a tri-carbonyl compound),and $CH_3-CO-CH_2-CHO$ (a dicarbonyl compound). By reconstructing the structure from these fragments,we identify that the alkene $(A)$ is $1$-methyl-$4$-(prop-$1$-en-$2$-yl)cyclohex-$1,3$-diene. Specifically,the ozonolysis of the double bonds in the ring and the exocyclic double bond accounts for the formation of the observed carbonyl products. Therefore,the correct structure corresponds to option $(B)$.

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