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प्रश्न
Complete the following reaction sequence by writing the structural formulae of the organic compound 'A', 'B' and 'C'.
\[\ce{2-Bromobutane->[Alc.KOH]A->[][Br2]B->[][NaNH2]C}\]
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उत्तर
\phantom{.}\ce{Br}\phantom{................................................................}\ce{Br}\phantom{.............................................}\\
\phantom{...}|\phantom{..................................................................}|\phantom{................................................}\\
\ce{\underset{\text{2-Bromobutane}}{H3C - CH - CH2CH3}->[Alc.KOH][-KBr]\underset{\underset{(Major) (A)}{But-2-ene}}{H3C - CH = CH - CH3}->[Br2] H3C - CH - CH - CH3 ->[NaNH2][Double dehydrohalogen reaction] \underset{\text{But-2-yne (C)}}{H3C - C ≡ C-CH3}}\\
\phantom{.........}|\\
\phantom{................}\ce{\underset{\text{2,3-Dibromobutane (B)}}{Br}}
\end{array}\]
संबंधित प्रश्न
from the following pair would undergo SN2 faster from the other?
a. CH3CH2CH2I b. CH3CH2CH2Cl
Complete the following reaction giving major products.
\[\ce{CH3 - CH = CH2 ->[HBr][peroxide] A ->[alc. KOH] B}\]
Name the reagent used to bring about the following conversion.
Bromoethane to ethoxyethane
Convert the following:
Benzyl alcohol to benzyl cyanide
Convert the following:
2-Chloropropane to propan-1-ol
Observe the following and answer the question given below.
Can it react by SN1 mechanism? Justify your answer.
Nucleophilic substitution reaction of 2, 4-dinitrochlorobenzene is faster than p-nitrochlorobenzene. Give reason.
Explain primary benzylic halide shows higher reactivity by SN1 mechanism than other primary alkyl halide.
Explain the factors affecting SN1 and SN2 mechanism.
Which of the following is a primary halide?
Which of the following is least reactive towards SN1 reactions?
Which of the following is least reactive towards nucleophilic addition?
How many metameric ethers are represented by the molecular formula C4H10O?
Which of the following carbocation is the most stable?
Identify 'B' in the following reaction.
\[\ce{2-Bromobutane ->[KOH alc.][\Delta] A ->[HI] B}\]
Write the product formed when alkyl halide reacts with silver nitrite.
The major product formed when 2-bromobutane is treated with alcoholic KOH is ______.
The order of reactivity of the given haloalkanes towards nucleophiles is:
With which halogen the reactions, of alkanes are explosive?
Observe the following and answer the question given below:
Can react by SN1 mechanism? Justify your answer.
Discuss β - elimination reaction.
Complete the following reactions giving major product.
\[\begin{array}{cc}
\ce{CH3}\phantom{................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{.................}
\end{array}\]
What is the action of following on ethyl bromide?
alcoholic sodium hydroxide
Identify the chiral molecule from the following.
Complete the following reaction giving major product.
\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{.................}
\end{array}\]
Complete the following reaction giving major product.
\[\begin{array}{cc}
\ce{CH3}\phantom{................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{................}\\
\end{array}\]
Which of the following reagent is used for conversion of alkyl halide into nitrile?
