Concept explainers
Interpretation: The name of the given compounds has to be determined.
Concept introduction:
IUPAC naming for
- Name the main chain: Find the longest carbon chain and name the chain according to the number of carbon atoms it contains; is also the suffix part of the name.
- Number the carbon atoms in the main chain: The carbons are numbered, in which the substituents must get lowest possible numbers.
- Identify the substituents, and number each: The number at where substituents are present has to be noted. The substituents written as prefix.
- Write the names as a single word: Use the hyphen to separate the numbers from the different prefix; commas to separate numbers. If two or more different substituents are present, arrange them in alphabetical order. If two or more identical substituents are present, use prefixes di-, tri-, tetra-, but this particular prefix should not be used for alphabetizing purpose.
According to
The order of priority is,
R and S nomenclature: it is used to assign the molecule using CIP rules.
The CIP rules are as follows:
Select the chiral carbon and assign the numbers according to the decreasing
If the numbering follows clockwise direction then the molecule is termed as R and if it follows anti-clockwise direction then molecule is termed as S.
The IUPAC name for the ketone is written by replcing the ‘e’ of alkane to ‘one’
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