dimethylsulfide borane complex; lithium diisopropyl amide 1) THF, 1 h, 2) THF, -78 deg C to 0 deg C, 2 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

potassium hydroxide

dimethylsulfide borane complex; lithium diisopropyl amide 1) THF, 1 h, 2) THF, -78 deg C to 0 deg C, 2 h; Yield given. Multistep reaction. Yields of byproduct given;