4-tert-butyl-2-methylheptane or 4-(1,1-dimethylethyl)-2-methylheptane

4-ethyl-3-methylheptane

Draw the structures of (i) 3-ethyl-5-methylheptane, (ii) 3-ethyl-2-methylhexane (iii) 2,4-dimethylpent-2-ene

Structures and IUPAC names of some hydrocarbons are given below. Explain why the names given in the parentheses are incorrect. (a) CH_(3)-underset(CH_(3))underset("| ")(CH)-CH_(2)-CH_(2)-underset(CH_(3))underset("| ")(CH)-underset(CH_(3))underset("| ")(CH)-CH_(2)-CH_(3) 2,5,6- Trimethyloctane [and not 3,4,6-Trimethyloctane] (b) CH_(3)-CH_(2)-underset(CH_(2)CH_(3))underset("| ")(CH-CH_(2))-underset(CH_(3))underset("| ")(CH)-CH_(2)-CH_(3) 3-Ethyl-5-methylheptane [and not 5-Ethyl-3-methylheptane]

The correct structure for 3,3 -bis ( 1,1 -dimethylethyl)- 2,2,4,4 -tetramethylpentane is

Write the structures of the following organic halogen compounds. i. 2-Chloro-3-methylpentane ii.p -Bromochlorobenzene iii. 1-Chloro-4-ethylclohexane iv. 2 -( 2 -Chlorophenyl)-1-iodooctane v. 2-Bromobutane - vi. 4 -tert-Butyl-3-iodoheptane vii. 1-Bromo-4-sec-butyl-2-methylbenzene viii. 1,4 -Dibromobut -2 -ene

Write the structure of the following organle halogen compounds: (i) 2-Chloro-3-methylpentane (ii) p-Bromochlorobenzene (iii) 1-Chloro-4-ethylecyclohexane (iv) 2-(2-Chlorophenyl)-1-iodooctane (v) Perfluorobenzene (vi) 4-tert-Butyl-3-iodoheptane (vii) 1-Bromor-4-sec-butyl-2-methylbenzene (viii) 1,4-Dibromobut-2-ene

Write the IUPAC name by using systematic names for alkyl groups : (i) 4-isopropyldecane (ii) 5-t-butyldecane (iii) 4-t-butyl-2,6-dimethyldecane (iv) trans-butyl-3-isopropyl cyclobutane (v) 4-isopropyl-2-octene (vi) 4-tert-butyl-2,5-dimethyloctane (vii) 4-methyl-4-isopropenyl-1-cyclohexene (viii) 3-isobutyl 1,4-hexadiyne.