For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated:
(a) C4H8 (one double bond)
(b) C5H8 (one triple bond)
(a) The following structural isomers are possible for $\mathrm{C}_{4} \mathrm{H}_{8}$ with one double bond:
The IUPAC name of
Compound (I) is But-1-ene,
Compound (II) is But-2-ene, and
Compound (III) is 2-Methylprop-1-ene.
(b) The following structural isomers are possible for $\mathrm{C}_{5} \mathrm{C}_{8}$ with one triple bond:
The IUPAC name of
Compound (I) is Pent-1-yne,
Compound (II) is Pent-2-yne, and
Compound (III) is 3-Methylbut-1-yne.
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