-Er a) H b) MgBr 1. 2. H3O+ ai (second step is just a workup) c) OH D3C- F3C CF3 • of you wholes CD3 1. LDA, -78°C 2. d) e) F₂C OH (excess) cat. HCI 1. LDA, -78°C 2. Br CD3

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