Orgoreview

From the following data choose a structure for the unknown compound X.

(a) The molecular formula of X is C₅H₁₀.

(b) Compound X reacts with HBr to give a new compound with the formula C₅H₁₁

(c) The ¹³C NMR spectrum of A shows 5 absorptions whereas the ¹³C NMR spectrum of the H-Br addition product shows only 4 absorptions.