# A compound that reacts with ethyl magnesium bromide and also decolorizes bromine water

Which of the following compounds reacts with ethyl magnesium bromide and also decolorizes bromine water solution:

Is the answer only option (c)?

• Can you explain what made you think so? – Rahul Verma Jan 1 at 7:29
• @RahulVerma The double bond present outside the ring will decolorize bromine water and the -OH becomes -OMgBr and $C_2H_6$ is formed. However, in option (d), the nitrile also reacts with Grignard to give an imine and eventually a ketone and the ring (which isn't benzene) has double bonds but I'm not sure if those double bonds can decolorize bromine water. – Tapi Jan 1 at 7:52
• Good analysis. I bet that d) is missing a double bond. – user55119 Jan 1 at 13:48
• Oh, my bad. I didn't noticed (d) wasn't benzene deriv. – Rahul Verma Jan 1 at 16:16