Which of the following compounds will exhibit geometrical isomerism ?
1 - Phenyl - 2 - butene
3 - Phenyl - 1 - butene
2 - Phenyl - 1 - butene
1, 1 - Diphenyl - prop-1-ene
Out of the given structures, only 1 - Phenyl - 2 - butene is capable of showing geometrical isomerism because it will show Cis–trans isomerism. Other structures have alkene at terminal carbon which does not show geometrical isomerism.
Hence, the correct answer is Option (1)
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