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प्रश्न
Write reaction showing aldol condensation of cyclohexanone.
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उत्तर
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.
\[\ce{R-CHO + 2Ag(NH_{3})^{+}_{2} + OH^{-}->[\triangle] R-CO{O}^{-} + 2Ag↓ + 4NH3 + 2H2O}\]
Answer in brief.
What is the action of hydrazine on cyclopentanone in presence of KOH in ethylene glycol?
Answer in brief.
Write reaction showing conversion of Acetaldehyde into acetaldehyde dimethyl acetal.
Write reactions for the action of the following reagents on p-chlorobenzaldehyde.
Tollen’s reagent
Write reactions for the action of the following reagents on p-chlorobenzaldehyde.
Phenyl hydrazine
If acetaldehyde is treated with Fehling's solution, the change that occurs in the system is ____________.
\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{.................}\ce{R}\phantom{..}\ce{H}\phantom{................}\\ \phantom{...}\backslash\phantom{..................}\backslash/\phantom{..........}\phantom{.......}\\ \ce{C = O ->[H2NNH2][KOH/glycol] C + N2 + H2O}\\ \phantom{}/\phantom{............}\phantom{.......}/\phantom{}\backslash\phantom{...............}\\ \phantom{}\ce{R}\phantom{..................}\ce{R}\phantom{..}\ce{H}\phantom{...............} \end{array}\]
Reaction is called ____________.
Fehling solution is ____________.
The compound which does NOT undergo haloform reaction is ____________.
Following reaction is an example of ____________.
\[\ce{Benzaldehyde ->[Nitration] {m}-Nitrobenzaldehyde}\]
Which of the following carbonyl compounds does NOT undergo aldol condensation?
Which of the following is a Wolf - Kishner reduction?
Which of the following reagents is used for the following conversion?
\[\ce{CH3 - CH = CH - CHO -> CH3 - CH = CH - CH2OH}\]
Which of the following does NOT give yellow precipitate when reacted with (NaOH + I2) mixture?
Identify the product Y in the following series of reactions.
\[\ce{4-Nitrotoluene ->[(CH3CO)2O/CrO3][273 - 278 K] X ->[H3O^+][\Delta] Y}\]
‘B’ is:
Phenyl methanal is reacted with concentrated NaOH to give two products X and Y. X reacts with metallic sodium to liberate hydrogen X and Y are ____________.
How will you convert benzaldehyde into the following compound?
Benzoic acid
Complete the following reaction.
\[\begin{array}{cc}
\ce{CH3 - CH2 - CH2 - C - CH3 ->[HO - CH2 - CH2 - CH2 - OH][dry HCl] ?}\\
||\phantom{.........}\\
\ce{O}\phantom{.........}
\end{array}\]
How will you prepare acetic anhydride from acetic acid?
How will you prepare acetamide from methyl cyanide?
How will you prepare acetophenone from acetyl chloride?
How will you prepare ethane from sodium acetate?
How will you prepare malachite green from benzaldehyde?
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Write a note on Clemmensen reduction.
Write the structure of the products obtained from the following ketones by action of hydrazine in presence of a slightly acidic medium.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Which from following tests confirms presence of aldehydic group in glucose?
