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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?
The following compounds will give positive Fehling’s test.
ln which of the following reactions, both oxidised and reduced forms of the same compound are obtained?
Identify B in the following reaction,
\[\ce{Acetaldoxime ->[Na][alcohol] A ->[NaNO2][HCl] B + H2O + N2\uparrow}\]
Which of following is not a property of red phosphorus?
Compounds of general formula, are called ____________.
\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{....}\ce{OR''}\phantom{}\\ \phantom{}\backslash\phantom{..}/\\ \ce{C}\\ \phantom{}/\phantom{..}\backslash\\ \phantom{...}\ce{R'}\phantom{...}\ce{OR''}\phantom{} \end{array}\]
Compounds of general formula, are called ____________.
\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{....}\ce{OR'}\phantom{}\\ \phantom{}\backslash\phantom{..}/\\ \ce{C}\\ \phantom{}/\phantom{..}\backslash\\ \phantom{...}\ce{H}\phantom{....}\ce{OR'}\phantom{} \end{array}\]
Which of the following will give positive iodoform test?
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.
\[\ce{4-Nitrotoluene ->[(CH3CO)2O/CrO3][273 - 278 K] X ->[H3O^+][\Delta] Y}\]
Which of the following represents the correct order of acidity in the given compounds.
Identify the product formed in the reaction.
Assertion: p-N, N-dimethyl amino benzaldehyde undergoes benzoin condensation
Reason: The aldehydic (−CHO) group is meta directing.
Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid.
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their ____________.
What is the action of HCN on propanone?
How is the following conversion effected phenyl methanal into benzoin?
How will you prepare lactic acid from ethanol?
How will you prepare ethane from sodium acetate?
How will you prepare malachite green from benzaldehyde?
How propanal is converted into propane.
The reagent used in Wolf - Kishner reduction is ______.
Which one of the following substituents at para-position is most effective in stabilizing the phenoxide 
ion?
Which one of the following reactions will not result in the formation of a carbon-carbon bond?
What is the action of hydrogen cyanide on the following?
Acetone
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 products obtained from the following ketones by action of hydrazine in presence of strong base KOH.
The products formed in the following reaction, A and B are:
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:
