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प्रश्न
How will you bring about the following conversion?
But-1-ene to but-2-ene
How will you bring about the following conversion in not more than two steps?
But-1-ene to but-2-ene
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उत्तर
\[\begin{array}{cc}
\ce{\underset{But-1-ene}{CH3CH2CH = CH2} ->[HBr][Markonikoff's rule] CH3 - CH2 - CH - CH3 ->[Alc. KOH, \Delta][-HBr] \underset{But-2-ene}{CH3 - CH = CH - CH3}}\\
\phantom{....}|\\
\phantom{.....}\ce{\underset{2-Bromobutane}{Br}}
\end{array}\]
संबंधित प्रश्न
Identify the product ‘D’ in the following sequence of reactions:
\[\ce{H3C - CH2 - CH2 - Cl \underset{KOH}{\overset{Alc}{->}} 'B' \overset{HBr}{->} 'C' \underset{Elther}{\overset{Na}{->}}'D'}\]
Identify ‘A’ and ‘B’ in the following reaction :
\[\ce{CH3 - CH = CH2 ->[HBr]'A' ->[alc.KOH]'B'}\]
State and explain Markownikoff's rule with suitable example
How the following conversion can be carried out?
1-Bromopropane to 2-bromopropane
How the following conversion can be carried out?
2-Chloropropane to 1-propanol
How the following conversion can be carried out?
2-Bromopropane to 1-bromopropane
Draw a neat, labelled energy profile diagram for SN1 reaction mechanism.
What are racemates?
Observe the following compounds and answer the questions given below.
(I)
\[\ce{\underset{\text{(II)}}{CH3 - CH2 - Br}}\]
- Identify the type of halides.
- Explain the nature of the C – Br bond in both of these halides.
- Which of these compounds will undergo aqueous alkaline hydrolysis readily? Write the reaction in support of your answer.
'A' is:
Deamination of meso- di bromobutane gives mainly:-
Identify the major product formed when 2-cyclohexylchloroethane undergoes a dehydrohalogenation reaction. Name the reagent which is used to carry out the reaction.
Elimination of bromine from 2-bromobutane results in the formation of ______.
The conversion of an alkyl halide into an alkene by alcoholic KOH is classified as ______.
Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
\[\ce{CH3 C(CI) (C2H5)CH2CH3 }\]
