Names of organic compounds are under the latest guide line of IUPAC IUPAC means international union of pure and applied chemistry. The main rules are longest chain rule, lowest number rule etc. We have to include the rules for naming the substituetns, multiple bonds and even functional groups.

Explain the term - Nomenclature'. State its need with reference to organic compounds. State the basic rules of Nomenclature by the trivial system - with suitable examples. Explain the longest chain rule and the smallest number for functional groups rule of Nomenclature by the IUPAC system-with suitable examples.

Questions|Rules For Naming Organic Compound Containing One Functional Group|Questions|Summary

A homologous series is a series of organic compounds which belong to the same family (i.e. possess same functional group) and show similar chemical properties. The members of this series are called homologous and differ from each other by the number of CH_(2) , units in the main carbon chain Which of the following represent the name and formula of the 2^(nd) member of homologous series having general formula C_(n)H_(2n+2) ?

A homologous series is a series of organic compounds which belong to the same family i.e., possess same functional group) and show similar chemical properties. The members of this series are called homologous and differ from each other by the number of CH_2 , units in the main carbon chain. Which of the following represent the name and formula of the 2^(nd) member of homologous series having general formula C_(n)H_(2n + 2) ?

Answer the following questions : Describe the IUPAC rules of naming organic compounds.

Give the IUPAC names for each of the following : (i) (CH_(3)CH_(2))_(2)CHCH(CH_(3))CH_(2)CH_(3) (ii) (CH_(3))_(4)C (iii) [(CH_(3))_(3)C]_(4)C (iv) (CH_(3))_(3)C CH_(2)C (CH_(3))_(3) Strategy: Select as the parent structure the longest possible continous chain and then consider the compound to have been derived from this structure by the replacement of H atoms by ends of the longest chain, begin numbering at the end nearest to the branch that is first in alphabetical order. 3. Assign the name and position number to each substituent. Arrange the substituents in alphabetical order. Hyphenated prefixes such as tert- sec- are not used in the alphabetization of substituents. 4. Use on appropriate prefix to group like substituents: di=2, tri=3, tetra=4 penta= 5, and so on. Do not consider these prefix when alphabetizing attached groups. 5. Write the name as single word. Use hyphens to separate numbers and letters (plus some hyphenated prefix) and commas to spearate numbers. Do not leave any spaces. Some examples showing the application of the rules of nomenclature are given below: various alkyl groups as substituents. To avoid any mistake. it is always better to write the complete structural formula.