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प्रश्न
Write the name of the product when ketones react with 1,2-diol in presence of dry HCl.
उत्तर
The product obtained when ketones react with 1,2-diol in presence of dry HCl is known as cyclic ketal.
APPEARS IN
संबंधित प्रश्न
Benzaldehyde gives all tests positive EXCEPT ____________.
The product formed after reaction between benzaldehyde and methyl magnesium iodide followed by acid hydrolysis is ____________.
Identify A in the following reaction.
\[\ce{A + CH3MgBr ->[Ether] complex ->[H3O+] (CH3)3C - OH}\]
Which of the following gives red precipitate with Fehling's solution?
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 ____________.
Which of the following does not give yellow solid on treatment with sodium hypoiodlte?
The compound which does NOT undergo haloform reaction is ____________.
Which among the following compounds does NOT undergo aldol condensation?
Which of the following reagents is used to avoid further oxidation of aldehydes?
\[\ce{CH3Br ->[KNC] (A) ->[H3O^+] (B) ->[PCl5] (C)}\] product (C) 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 ____________.
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their ____________.
Identify A, B, C and D.
\[\ce{ethanoic acid ->[SOCl2] A ->[Pd/BaSO4] B ->[NaOH] C ->[][\Delta] D}\]
How will you convert benzaldehyde into the following compound?
Benzophenone
How will you convert benzaldehyde into the following compound?
Benzoic acid
What is the action of HCN on 2, 4-dichlorobenzaldehyde?
The reagent used in Wolf - Kishner reduction is ______.
Primary nitroalkanes are obtained in good yield by oxidising aldoximes with the help of ______.
Which one of the following substituents at para-position is most effective in stabilizing the phenoxide 
ion?
A substance C4H10O yields on oxidation a compound, C4H8O which gives an oxime and a positive iodoform test. The original substance on treatment with a conc. H2SO4 gives C4H8. The structure of the compound is ______.
In the above reaction, product (B) is:
Write reactions when phenol reacts with Concentrated HNO3
How will you prepare Acetic anhydride from acetic acid.
How will you prepare Acetic anhydride from acetic acid.
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.
How will you prepare acetic anhydride from acetic acid?
