This step is 4 to 5.
Sir is it bromine in carbon tetrachloride or water?
Because you said bromine water test but wrote CCl4
It should be 3-Propenyl cyclobutanol I think.
In the first example,it should be neo(common name).There are two branchings on the second carbon.
Please rectify sir.
Sir 1 methyl ethyl is same as propyl? Can't we use propyl there?