Question
Considering the following alkenes:
But-1-ene(i) 2,3−Dimethylbut−2−ene(ii) 2-Methylbut-2-ene(iii) 2-Methylpropene(iv)
The order of stability is
Considering the following alkenes:
But-1-ene(i) 2,3−Dimethylbut−2−ene(ii) 2-Methylbut-2-ene(iii) 2-Methylpropene(iv)
The order of stability is
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Solution
The correct option is B II > III > IV > I
The stability of the alkene depends upon the number of alpha hydrogens.
But-1-ene CH2=CH−CH2−CH3
number of alpha hydrogen is 2
2,3- Dimethylbut - 2 -ene CH3−C(CH3)=C(CH3)−CH3
number of alpha hydrogen is 12
2-Methylbut-2-ene CH3−C(CH3)=CH−CH3
number of alpha hydrogen is 9
2-methylpropene CH3−C(CH3)=CH2
number of alpha hydrogen is 6
The stability of the alkene depends upon the number of alpha hydrogens.
But-1-ene CH2=CH−CH2−CH3
number of alpha hydrogen is 2
2,3- Dimethylbut - 2 -ene CH3−C(CH3)=C(CH3)−CH3
number of alpha hydrogen is 12
2-Methylbut-2-ene CH3−C(CH3)=CH−CH3
number of alpha hydrogen is 9
2-methylpropene CH3−C(CH3)=CH2
number of alpha hydrogen is 6
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