The IUPAC name of the compound is $1, 3, 3 -$ trimethyl cyclobut $- 1 -$ ene.

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Solution

The IUPAC name of the compound is $1, 3, 3 -$ trimethyl cyclobut $- 1 -$ ene.
Hence, the name is correct and correct entry is 1.

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Similar questions

Write IUPAC names of the products obtained by the ozonolysis of the following compounds:
(i) Pent-2-ene

(ii) 3,4-Dimethyl-hept-3-ene

(iii) 2-Ethylbut-1-ene

(iv) 1-Phenylbut-1-ene

H C \equiv C H - C H = C H_{2}

d o d e c - 10 - e n - 4 - y n - 3, 8 - d i o l

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