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प्रश्न
Write reactions for the action of the following reagents on p-chlorobenzaldehyde.
Phenyl hydrazine
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उत्तर
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संबंधित प्रश्न
Answer in brief.
Write reaction showing conversion of Acetaldehyde into acetaldehyde dimethyl acetal.
Addition of sodium bisulphite to ethanol is ____________ type of reaction.
Write reactions for the action of the following reagents on p-chlorobenzaldehyde.
Tollen’s reagent
Aldol condensation between which of the following compounds followed by dehydration gives 4-Methylpent-3-en-2-one?
Identify B in the following reaction,
\[\ce{Acetaldoxime ->[Na][alcohol] A ->[NaNO2][HCl] B + H2O + N2\uparrow}\]
Which of following is not a property of red phosphorus?
Which of the following compounds does NOT undergo aldol condensation?
Compounds of general formula, are called ____________.
\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{....}\ce{OR''}\phantom{}\\ \phantom{}\backslash\phantom{..}/\\ \ce{C}\\ \phantom{}/\phantom{..}\backslash\\ \phantom{...}\ce{R'}\phantom{...}\ce{OR''}\phantom{} \end{array}\]
\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{.................}\ce{R}\phantom{..}\ce{H}\phantom{................}\\ \phantom{...}\backslash\phantom{..................}\backslash/\phantom{..........}\phantom{.......}\\ \ce{C = O ->[H2NNH2][KOH/glycol] C + N2 + H2O}\\ \phantom{}/\phantom{............}\phantom{.......}/\phantom{}\backslash\phantom{...............}\\ \phantom{}\ce{R}\phantom{..................}\ce{R}\phantom{..}\ce{H}\phantom{...............} \end{array}\]
Reaction is called ____________.
An aldehyde or ketone reacts with hydrogen cyanide to form corresponding cyanohydrin derivatives. This reaction is an example of ____________.
The compound which does NOT undergo haloform reaction is ____________.
Which of the following will give positive iodoform test?
Which of the following does NOT give yellow precipitate when reacted with (NaOH + I2) mixture?
\[\ce{Benzoic acid ->[i) NH3][ii) \Delta] A ->[NaOBr] B ->[NaNO2/HCl] C}\] ‘C’ is:
\[\ce{CH3Br ->[KNC] (A) ->[H3O^+] (B) ->[PCl5] (C)}\] product (C) is:
‘B’ is:
Identify the product formed in the reaction.
Identify X and Y.
\[\ce{CH3COCH2CH2COOC2H5 ->[CH3MgBr] X ->[H3O^+] Y}\]
How will you convert benzaldehyde into the following compound?
α-hydroxy phenyl acetic acid
Identify A, B and C.
Which of the following compound will show a positive silver mirror test?
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 ______.
Identify the reaction in which carbonyl group of aldehydes and ketones is reduced to methylene group on treatment with zinc-amalgam and cone. HCI.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
What is the action of hydrogen cyanide on the following?
Acetone
Write a note on Clemmensen reduction.
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?
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:
