Br 2) 3) CH 3 MgBY Aq. Woneup m-cPBA → PBr3 > PBV3 CH3 MgBr → - CH3 Mg Br → Aq. workup Lom-CPBA Aq wore up > 5- BH3• THF - NaOHI HbO z PBR3 → Ag work up > > PBT3 CH 3 Mg Br S.Brz -→ CH3 MgBr → Aq. workyP

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