please help asap, i only have 1 hr

2. Answer ALL parts. (a) (i) Draw the most stable conformation of the two stereoisomers A and B. (2 marks) . NaOEt An epoxide Br A OH NaOEt A carbonyl compound Br B (ii) Compound A reacts with base (NaOEt) to form an epoxide, whereas compound B reacts to give a carbonyl compound. Use your conformational drawings to draw mechanisms for these two reactions and draw the structures of the products. In addition, draw labelled diagrams of the orbital interactions (stereoelectronic effects) that result in this reactivity. (10 marks)