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Which of the following represents the correct IUPAC name for the compounds concerned? (a) 2, 2-Dimethylpentane OR 2-Dimethylpentane (b) 2, 4, 7-Trimethyloctane OR 2, 5,7-Trimethyloctane (c ) 2-Chloro-4-methylpentane OR 4-Chloro-2-methylpentane (d) But 3-yn-1-ol OR But -4-ol-1-yne |
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Answer» Solution :(a) 2, 2-Dimethylpentane is correct NAME because, for two alkyl groups on the same carbon its LOCANT is REPEATED twice. (b) 2, 4, 7-Trimethyllocatane is correct name. Here, 2, 4, 7-locant set is lower than 2, 5,7 (c ) 2-Chloro-4-methylpentane is correct name. Because here function group is chloro so, lowest no. is give to chloro (d) But-3-yn-1-ol is correct name. Here, In compound two functional group `-C -= C- and -OH` present. In which `-OH` is a principal functional group so, it CARRY lower locant |
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