Match the following with the correct name of reaction
Reaction Name of reaction (I) 
(P) Gattermann Koch reaction (II) 
(Q) Hell Volhard Zelinsky (III) 
(R) Iodoform reaction
Match the following with the correct name of reaction
| Reaction | Name of reaction | ||
| (I) | | (P) | Gattermann Koch reaction |
| (II) | | (Q) | Hell Volhard Zelinsky |
| (III) | | (R) | Iodoform reaction |
(I)\(\to\)(Q), (II)\(\to\)(R), (III)\(\to\)(P)
(I)\(\to\)(R), (II)\(\to\)(Q), (III)\(\to\)(P)
(I) \(\to\)(Q), (II) \(\to\)(P), (III) \(\to\)(R)
(I) \(\to\)(P), (II) \(\to\)(Q), (III) \(\to\)(R)
The Correct Option is A
Approach Solution - 1
(I) CH3-COOH + Br2 (Red P) Hell Volhard Zelinsky Reaction (Q)
- This reaction involves the bromination of carboxylic acids at the alpha carbon position.
- It requires the presence of phosphorus (P).
(II) CH3-C=O-CH3 + NaOI Iodoform Reaction (R)
- The iodoform reaction identifies compounds with a methyl ketone group (-CO-CH3).
- It produces a yellow precipitate of iodoform (CHI3).
(III) Benzene + CO + HCl + AlCl3 Gattermann Koch Reaction (P)
- This reaction involves the formylation of benzene to form benzaldehyde.
- It requires carbon monoxide (CO), hydrogen chloride (HCl), and AlCl3 as catalysts.
Correct Matches:
- (I) → Q
- (II) → R
- (III) → P
Approach Solution -2
The correct answer is A
\(\to\) Hell Volhard Zelinsky \(\to\) Iodoform reaction \(\to\) Gattermann Koch reaction
Top Questions on Amines
Amines have a lone pair of electrons on the nitrogen atom, due to which they behave as Lewis bases. Greater the value of \( K_b \) or smaller the value of \( pK_b \), stronger is the base. Amines are more basic than alcohols, ethers, esters, etc. The basic character of aliphatic amines should increase with the increase of alkyl substitution. However, it does not occur in a regular manner, as a secondary aliphatic amine is unexpectedly more basic than a tertiary amine in aqueous solutions. Aromatic amines are weaker bases than ammonia and aliphatic amines. Electron-releasing groups such as \( -CH_3 \), \( -NH_2 \), etc., increase the basicity, while electron-withdrawing substituents such as \( -NO_2 \), \( -CN \), halogens, etc., decrease the basicity of amines. The effect of these substituents is more pronounced at the para-position than at the meta-position.
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Concepts Used:
Amines
Amine is a type of compound which is derived from ammonia (NH3). According to Organic chemistry, they are basically classified as the functional groups of the organic nitrogen compounds that contain nitrogen atoms with a lone pair.
Amine - Types
Primary Amines:
It is formed when one hydrogen atom in ammonia is substituted by an alkyl or aromatic group. Amino acids and methyl amine are the best examples that why aromatic amines include aniline.
Secondary Amines:
Amines that have two organic substitutes either alkyl or aryl ones or both and are bound to the nitrogen together with one hydrogen are termed as secondary amines. For Example, Dimethylamine.
Tertiary Amines:
Tertiary Amines are the amines where the nitrogen consists of three organic substitutes. For example, Trimethylamine and EDTA.