10.11 Give the IUPAC names of the following compounds: (i) CH3CH(Cl)CH(Br)CH3 (ii) CHF2CBrClF (iii) ClCH2C≡CCH2Br (iv) (CCl3 ) 3CCl (v) CH3C(p-ClC6H4 ) 2CH(Br)CH3 (vi) (CH3 ) 3CCH=CClC6H4 I-p

CH3CH (Cl)CH (Br)CH3: 2-Bromo-3-chlorobutane Write the name of side substituent according to the alphabetical order. Example: bromo is written before chloro as B comes before Always use a hyphen {-} between a number and a Since Br is attached to 2 position and Cl is attached to third position i.e. it is written as 2-Bromo and 3-chloro. Lastly, write the name of the longest hydrocarbon chain e. butane of 4 carbons. CHF2CBrClF :1-bromo-1-chloro-1,2,2-trifluoroethane While writing the IUPAC name, write the name of side substituent according to the alphabetical Eg: bromo is written before chloro and fluoro as B comes before C and F. Always use a hyphen {-} between a number and a Since Br is attached to first carbon and Cl Is also attached to first carbon i.e. it is written as 1-Bromo and 1-chloro. Since there are 3 F present so it is written as And at the last write the name of the longest hydrocarbon chain e. ethane of 2 carbons. ClCHC≡CCH2Br: 1-bromo-4-chlorobut-2-yne While writing the IUPAC name, write the name of side substituent according to the alphabetical That is why bromo is written before chloro as B comes before C. Always use a hyphen {-} between a number and a Since Br is attached to 1 position and Cl isattached to fourthposition i.e. it is written as 1-Bromo and 4-chloro. Also there is a presence of triple bond at the second carbon so the suffix used for triple bond is “yne” along with the position of the bond i.e. but-2-yne (CCl3)3CCl 2- (trichloromethyl)-1,1,1,2,3,3,3-heptachloropropane Explanation: While writing the IUPAC name, write the name of side substituent according to the alphabetical Always use a hyphen {-} between a number and a Because of the presence of 3 CCl3 group tri is used as a Since 7 Cl atoms are present in all therefore hepta is used a prefix with the position of chlorine. And at the last write the name of the longest hydrocarbon chain e. propane) CH3C (p-ClC6H4)2CH (Br)CH3 2-bromo-3,3-bis- (4-chlorophenyl)butane Explanation: While writing the IUPAC name, write the name of side substituent according to the alphabetical Always use a hyphen {-} between a number and a Because of the presence of 2 (p-ClC6H2) group bis is used as a prefix instead of di because C6H4 contains itself contains numbers 6 & And at the last write the name of the longest hydrocarbon chain e. butane) (CH3)3CCH=CClC6H4I-p 1-chloro-1- (4-iodophenyl)-3,3-dimethylbut-1-ene Explanation: While writing the IUPAC name, write the name of side substituent according to the alphabetical Always use a hyphen {-} between a number and a Because of the presence of 2 methyl group di is used as a And the presence of double bond has the ending 'ene' and the presence of double bond at the first position is written as but-1-ene.)

10.11 Give the IUPAC names of the following compounds:

(i) CH₃CH(Cl)CH(Br)CH₃ (ii) CHF₂CBrClF (iii) ClCH₂C≡CCH₂Br (iv) (CCl₃ ) ₃CCl (v) CH₃C(p-ClC₆H₄ ) ₂CH(Br)CH₃ (vi) (CH₃ ) ₃CCH=CClC₆H₄ I-p

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Vishal Baghel | Contributor-Level 10

10 months ago

CH₃CH (Cl)CH (Br)CH₃: 2-Bromo-3-chlorobutane

Write the name of side substituent according to the alphabetical order. Example: bromo is written before chloro as B comes before
Always use a hyphen {-} between a number and a Since Br is attached to 2 position and Cl is attached to third position i.e. it