The total number of cyclic structural as well as stereo isomers possible for compound with the molecular formula C₆H₁₂ (cyclobutane ring only) is:
(a) (b) (c) (d)
(e) (f) (g)

Question

The total number of cyclic structural as well as stereo isomers possible for compound with the molecular formula C 6 H 12 (cyclobutane ring only) is: (a) (b) (c) (d) (e) (f) (g)

TestHub · Accepted Answer

(a) ethylcyclobutane (1), (b) 1,1-dimethylcyclobutane (1), (c) cis-1,2-dimethylcyclobutane (meso, 1), (d) and (e) the two enantiomers of trans-1,2-dimethylcyclobutane (2), (f) cis-1,3-dimethylcyclobutane (1) and (g) trans-1,3-dimethylcyclobutane (1) - C₁ and C₃ of the 1,3-isomers are not stereocentres, so no enantiomerism there. Total = 1 + 1 + 1 + 2 + 1 + 1 = 7.

Ans. 7

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