Which alkene is most stable?

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Question

(C) The stability of an alkene is directly proportional to the number of alkyl groups attached to the doubly bonded carbon atoms (hyperconjugation eff

Vedclass · Accepted Answer

$2,3$-dimethylbut-$2$-ene: $(CH_3)_2C=C(CH_3)_2$

Vedclass · Answer

(C) The stability of an alkene is directly proportional to the number of alkyl groups attached to the doubly bonded carbon atoms (hyperconjugation effect). Let us analyze the number of alpha-hydrogens for each option: $A$) $2$-methylprop-$1$-ene: $6$ $\alpha$-hydrogens. $B$) $2$-methylbut-$2$-ene: $9$ $\alpha$-hydrogens. $C$) $2,3$-dimethylbut-$2$-ene: $12$ $\alpha$-hydrogens. $D$) trans-but-$2$-ene: $6$ $\alpha$-hydrogens. Since $2,3$-dimethylbut-$2$-ene has the highest number of $\alpha$-hydrogens $(12)$,it is the most stable alkene among the given options.

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Which of the following alkenes will yield $2-$methyl propanal on reductive ozonolysis (addition with ozone followed by the reaction with $Zn / H_2 O$)?

In the given reaction sequence,identify the final product $C$:
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(Note: The reaction proceeds via electrophilic addition to a conjugated diene.)

What is the product obtained from the reaction of $HCl$,$HBr$,and $HI$ with alkenes in the presence of peroxide?

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