For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of the double or triple bond as indicated : (a) C4H8 (one double bond) (b) C5H8 (one triple bond)

Engineering

Chemistry

Test of Alkenes and alkynes

Question

For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of the double or triple bond as indicated :

(a) C₄H₈ (one double bond)

(b) C₅H₈ (one triple bond)

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Three isomers are possible. Their IUPAC names are

(I) pent – 1 – yne,

(II) pent – 2 – yne and

(III) 3 – methylbut – 1 – ent.
The structural formulas are as shown.

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