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प्रश्न
Write reactions for the following conversions.
Benzene to Benzaldehyde
Convert:
Benzene into benzaldehyde
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उत्तर
Gatterman-Koch formylation of benzene will give benzaldehyde.
संबंधित प्रश्न
Write the structures of A and B in the following reactions:
Write the structure of the product of the following reaction:
\[\ce{H3C - C ≡ C - H ->[Hg^{2+}, H2SO4]}\]
Complete the synthesis by giving missing starting material, reagent or product.
Complete the synthesis by giving missing starting material, reagent or product.
Complete the synthesis by giving missing starting material, reagent or product.
Write a note on ‘aldol condensation’.
What is the action of phenyl hydrazine on propanone?
What is the action of Zn – Hg / conc. HCl on propanone?
What is the action of Sodium bisulphite on propanone?
Write only reactions for the preparation of benzophenone from benzonitrile.
Write chemical equation for the following:
Gatterman - Koch formylation
Complete the following reaction:
\[\ce{(C6H5CH2)2Cd + 2CH3COCI}\]
Answer the following in one sentence.
Write reaction showing conversion of ethanenitrile into ethanol.
Answer the following in one sentence.
Name the product obtained by reacting toluene with carbon monoxide and hydrogen chloride in presence of anhydrous aluminium chloride.
What is the action of following reagents on ethanoic acid?
SOCl2/heat
What is the action of following reagents on ethanoic acid?
sodalime/heat
What is the action of following reagents on ethanoic acid?
P2O5/heat
The formation of aldehyde from an alkyl cyanide using SnCl2/conc.HCl is known as ____________.
In the formation of an aldol, α-carbon atom of one aldehyde molecule attaches to ____________ of another aldehyde molecule.
Catalyst used in Rosenmund reduction is ____________.
Which of the following is a Stephen reaction?
Which of the following is called as mandelonitrile?
Which of the following represents Etard's reaction?
The reaction in which methyl group on benzene ring is converted to aldehydic group is called ______.
Identify 'A' and 'B' respectively in following reaction.
\[\ce{Toluene ->[Cl2][hv] A ->[H2O][\Delta] B}\]
The product of the reaction between dimethylcadmium and acetyl chloride is ____________.
Identify the compound A and Bin following reaction.
\[\ce{CH3Cl ->[KCN(alc)][\Delta] A ->[2H2O][HCl] B + NH4Cl}\]
A reaction in which chromyl chloride in presence of CS2 converts methyl group of toluene to aldehydic group on acid hydrolysis is called _________.
Which among the following compound on treatment with DIBAL-H yields dodecanal at 195 K?
Which among the following compounds is obtained when benzene is treated with CO and HCl in presence of catalyst anhydrous AlCl3 and Cu2Cl2 under high pressure?
Which of the following compounds does NOT undergo Friedel-Crafts reaction?
Identify 'A' in the following reaction.
\[\ce{A ->[H2][Pd-BaSO4] C6H5CHO + HCl}\]
Which of the following is obtained by hydrogenation of benzoyl chloride in presence of Pd on BaSO4?
Identify product A in the following reaction:
\[\ce{Acetyl chloride + Dibenzylcadmium -> A}\]
Chromyl chloride converts methyl group to a chromium complex, which on acid hydrolysis gives corresponding aldehyde. This reaction is called ____________.
Which of the following reaction is shown by alkynes?
Two isomers 'A' and 'B' with molecular formula C4H8 give different products on oxidation with KMnO4 in acidic medium. Isomer 'A' on reaction with KMnO4/H+ results in the effervescence of gas and gives ketone. The compound 'A' is:
Which of the following on heating with aqueous KOH, produces acetaldehyde?
Z is:
Ozonolysis of 2, 3 dimethyl but-2-ene, followed by decomposition by Zn dust and water gives ______.
Write Stephen reaction for the preparation of aldehyde.
How butanone is prepared from alcohol?
How are the following compound obtained by hydration of alkenes?
Ethyl alcohol
How acetone is prepared from nitriles using Grignard reagent?
