QuestionOrganic / epoxidation and Fürst–Plattner opening
The major products [X] and [Y] formed in the following reaction sequence are


- (a) [X] = α-epoxide (O on the lower face, opposite the angular Me); [Y] = OMe β (wedge) at the carbon next to the ring junction and OH α (hashed) at the adjacent carbon
- (b) [X] = β-epoxide (O on the same face as the angular Me); [Y] = OMe β (wedge) next to the ring junction and OH α (hashed) at the adjacent carbon
- (c) [X] = α-epoxide; [Y] = OH β (wedge) next to the ring junction and OMe α (hashed) at the adjacent carbon
- (d) [X] = β-epoxide; [Y] = OH β (wedge) next to the ring junction and OMe α (hashed) at the adjacent carbon
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