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प्रश्न
Write another name of disproportionation reaction?
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उत्तर
Cannizzaro reaction
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संबंधित प्रश्न
Answer in brief.
Observe the following equation of reaction of Tollens' reagent with aldehyde. How do we know that a redox reaction has taken place? Explain.
\[\ce{R-CHO + 2Ag(NH_{3})^{+}_{2} + OH^{-}->[\triangle] R-CO{O}^{-} + 2Ag↓ + 4NH3 + 2H2O}\]
Write a note on Stephen reaction.
Write reaction showing aldol condensation of cyclohexanone.
Write the name of the product when ketones react with 1,2-diol in presence of dry HCl.
Explain haloform reaction with suitable example.
Aldol condensation between which of the following compounds followed by dehydration gives 4-Methylpent-3-en-2-one?
Identify B in the following reaction,
\[\ce{Acetaldoxime ->[Na][alcohol] A ->[NaNO2][HCl] B + H2O + N2\uparrow}\]
If acetaldehyde is treated with Fehling's solution, the change that occurs in the system is ____________.
Which of following is not a property of red phosphorus?
Acetone on Clemmensen reduction gives ____________.
Which of the following will give positive iodoform test?
Which of the following reagents is used to avoid further oxidation of aldehydes?
Predict the product Z in the following series of reactions.
\[\ce{Ethanoic acid ->[PCl5] X ->[C6H6][Anhydrous AlCl3] Y ->[i) CH3MgBr][H3O^+] Z}\]
In which case, chiral carbon is not generated by reaction with HCN.
In which of the following reactions new carbon-carbon bond is not formed?
How will you convert benzaldehyde into the following compound?
α-hydroxy phenyl acetic acid
How is the following conversion effected propanal into butanone?
How is the following conversion effected phenyl methanal into benzoic acid?
How will you prepare malachite green from benzaldehyde?
How will you prepare cinnamic acid from benzaldehyde?
How acetone is converted into propane.
In the above reaction, product (B) is:
Which of the following is most reactive towards the addition reaction of hydrogen cyanide to form the corresponding cyanohydrin?
Aldehydes are readily oxidised to yield carboxylic acids but ketones are inert to oxidation. Which is the most likely explanation regarding this difference in reactivity?
A carbonyl compound A having molecular formula C5H10O forms crystalline precipitate with sodium bisulphate and gives positive iodoform test. A does not reduce Fehling solution. Identify A.
Identify B in the following reaction:
\[\begin{array}{cc}
\ce{O}\phantom{........}\\
||\phantom{........}\\
\ce{\underset{(Acetone)}{CH3 - C - CH3}->[CrO3] B}
\end{array}\]
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
How will you prepare acetic anhydride from acetic acid.
How will you prepare Acetic anhydride from acetic acid.
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:
