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प्रश्न
_____________ reaction is used to synthesize straight alkyl substituted benzenes.
विकल्प
Etard
Rosenmund reduction
Stephen reaction
Wolf Kishner reduction
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उत्तर
Wolf Kishner reduction reaction is used to synthesize straight alkyl substituted benzenes.
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संबंधित प्रश्न
Answer in brief.
What is the action of hydrazine on cyclopentanone in presence of KOH in ethylene glycol?
Write reaction showing aldol condensation of cyclohexanone.
Benzaldehyde gives all tests positive EXCEPT ____________.
Ethyl methyl ketone can be reduced to n-butane by which of the following reactions?
Identify the INCORRECT reaction.
\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{.................}\ce{R}\phantom{..}\ce{H}\phantom{................}\\ \phantom{...}\backslash\phantom{..................}\backslash/\phantom{..........}\phantom{.......}\\ \ce{C = O ->[H2NNH2][KOH/glycol] C + N2 + H2O}\\ \phantom{}/\phantom{............}\phantom{.......}/\phantom{}\backslash\phantom{...............}\\ \phantom{}\ce{R}\phantom{..................}\ce{R}\phantom{..}\ce{H}\phantom{...............} \end{array}\]
Reaction is called ____________.
An aldehyde or ketone reacts with hydrogen cyanide to form corresponding cyanohydrin derivatives. This reaction is an example of ____________.
Fehling solution is ____________.
Which of the following will give positive iodoform test?
The number of α-H atoms in butanal is ____________.
Which of the following carbonyl compounds does NOT undergo aldol condensation?
Reaction of acetone with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:
\[\ce{CH2 = CH2 ->[i) O3][ii) Zn/H2O] X ->[NH3] Y}\] ‘Y’ is:
Identify A, B and C.
How is the following conversion effected Hex-3-yne into hexan-3-one?
How will you prepare acetaldehyde from ethyne?
How propanal is converted into propane.
Which of the following compound will show a positive silver mirror test?
The reagent used in Wolf - Kishner reduction is ______.
Which of the following compound will give positive iodoform test?
Which of the following compounds does not undergo a haloform reaction?
How are the following compound obtained from alkyne?
Acetone
Write the structure of the products obtained from the following ketones by action of hydrazine in presence of a slightly acidic medium.
Identify B in the following reaction:
\[\begin{array}{cc}
\ce{O}\phantom{........}\\
||\phantom{........}\\
\ce{\underset{(Acetone)}{CH3 - C - CH3}->[CrO3] B}
\end{array}\]
Write reactions when phenol reacts with Dilute HNO3
What is the action of the following regent on propanal?
Sodium Bisulphite
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Nitration of the compound is carried out; this compound gives a red-orange ppt. with 2,4-DNP, this compound undergoes the Cannizzaro reaction but not aldol, then possible product due to nitration is:
