1
Question
Match the column I with column II:
(A) Acetaldehyde, Vinylalcohol
(I) Enantiomers (B) Eclipsed and staggered ethane
(II) Tautomers
(C) (+)2 butanol, (-)2-butanol
(III) Chain isomers
(D) Methyl-n-propylamine and Diethylamine
(IV) Conformational isomers
(V) Metamer
| (A) Acetaldehyde, Vinylalcohol | (I) Enantiomers |
| (B) Eclipsed and staggered ethane | (II) Tautomers |
| (C) (+)2 butanol, (-)2-butanol | (III) Chain isomers |
| (D) Methyl-n-propylamine and Diethylamine | (IV) Conformational isomers |
| (V) Metamer |
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Solution
The correct option is A (A) - (II), (B) - (IV), (C) - (I), (D) - (V)
Correct matching:
List-I List-II
(A) Acetaldehyde, Vinylalcohol (I) Tautomers
(B) Eclipsed and staggered ethane (II) conformational isomers
(C) (+) 2-Butanol, (-) 2-Butanol (III) enantiomers
(D) Methyl-n-propylamine and Diethylamine (IV) Metamers
Tautomerization. This reaction commonly results in the formal migration of a hydrogen atom or proton, accompanied by a switch of a single bond and adjacent double bond. The concept of tautomerizations is called tautomerism.
Tautomers are constitutional isomers of organic compounds that readily interconvert with each other.
Conformational isomers: . conformational isomerism is a form of stereoisomerism in which the isomers can be interconverted exclusively by rotations about formally single bonds (refer to figure on single bond rotation).
Enantiomers are chiral molecules that are mirror images of one another. Furthermore, the molecules are non-superimposable on one another. This means that the molecules cannot be placed on top of one another and give the same molecule. Chiral molecules with one or more stereocenters can be enantiomers. It is sometimes difficult to determine whether or not two molecules are enantiomers
This form of isomerism is rare and is limited to molecules having a
divalent atom like O or S or group like -NH- and alkyl groups around it. The main examples
come from ethers and thioethers.
CH3−NH−CH2CH2CH3 and CH3CH2−NH−CH2CH3, are metamers.
Correct matching:
List-I List-II
(A) Acetaldehyde, Vinylalcohol (I) Tautomers
(B) Eclipsed and staggered ethane (II) conformational isomers
(C) (+) 2-Butanol, (-) 2-Butanol (III) enantiomers
(D) Methyl-n-propylamine and Diethylamine (IV) Metamers
Tautomerization. This reaction commonly results in the formal migration of a hydrogen atom or proton, accompanied by a switch of a single bond and adjacent double bond. The concept of tautomerizations is called tautomerism.
Tautomers are constitutional isomers of organic compounds that readily interconvert with each other.
Conformational isomers: . conformational isomerism is a form of stereoisomerism in which the isomers can be interconverted exclusively by rotations about formally single bonds (refer to figure on single bond rotation).
Enantiomers are chiral molecules that are mirror images of one another. Furthermore, the molecules are non-superimposable on one another. This means that the molecules cannot be placed on top of one another and give the same molecule. Chiral molecules with one or more stereocenters can be enantiomers. It is sometimes difficult to determine whether or not two molecules are enantiomers
This form of isomerism is rare and is limited to molecules having a divalent atom like O or S or group like -NH- and alkyl groups around it. The main examples come from ethers and thioethers.
CH3−NH−CH2CH2CH3 and CH3CH2−NH−CH2CH3, are metamers.
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