Give the IUPAC names of the following compounds:
CH₃CH(Cl)CH(Br)CH₃
2-Bromo-3-chlorobutane
CHF₂CBrClF
2-Bromo-2-chloro-1,1,2-trifluoroethane
ClCH₂C=CCH₂Br
4-Bromo-1-chlorobut-2-yne
(CCl₃)₃CCl
Chlorotris(trichloromethyl)methane
CH₃C(p-ClC₆H₄)₂CH(Br)CH₃
2,2-Bis(4-chlorophenyl)-3-bromobutane
(CH₃)₃CCH=CClC₆H₄I-p
1-(tert-Butyl)-2-chloro-3-(4-iodophenyl)prop-1-ene
Explanation
For IUPAC naming of halogen compounds, identify the longest carbon chain as parent, number to give lowest locants to substituents, and arrange substituents alphabetically. In (i), butane chain has Br at C-2 and Cl at C-3. In (ii), ethane has multiple halogens listed alphabetically with appropriate locants. In (iii), but-2-yne has triple bond between C-2 and C-3. In (iv), methane has three trichloromethyl groups and one Cl. In (v), butane chain has two 4-chlorophenyl groups at C-2 and Br at C-3. In (vi), propene chain has tert-butyl at C-1, Cl at C-2, and 4-iodophenyl at C-3.