A magnesium-catalyzed reaction of this type can be performed on imines or nitriles after reacting its main reagent with pinacol. (-5[1])Adding NMO and TPAP after this reaction is used to oxidize its product when adding a carbonyl to the less substituted constituent. The disiamyl derivative of this reaction’s main reagent is commonly used when performing it on alkynes. Up to three equivalents of substrate can react with this reaction’s main reagent, whose traditional dissolution in (*) THF has been replaced with a more stable dimethyl sulfide adduct. In this reaction, two concerted steps form a four-membered transition state through a syn addition to an alkene, after which a base and hydrogen peroxide are added to oxidize the product. For 10 points, name this anti-Markovnikov reaction that converts an alkene to an alcohol using a borane reagent. (10[1])■END■