(i): 2-bromo-3-methylpentanoic acid or α-bromo-β-methylvaleric acid (common name)
(ii): (Z)-1-carboxylic-2,3-dimethylhex-2-ene
(iii): ortho-dibromobenzoic acid

(i): 2-bromo-3-methylpentanoic acid or α-bromo-β-methylvaleric acid (common name)
(ii): (E)-3,4-dimethylhept-3-enoic acid
(iii): 5,6-dibromobenzoic acid

(i): 2-bromo-3-ethylbutanoic acid or α-bromo-β-ethylvaleric acid (common name)
(ii): (Z)-3,4-dimethylhept-3-enoic acid
(iii): ortho-dibromobenzoic acid

(i): 2-bromo-3-methylpentanoic acid or α-bromo-β-methylvaleric acid (common name)
(ii): (Z)-3,4-dimethylhept-3-enoic acid
(iii): 2,3-dibromobenzoic acid