potassium hydroxide; 18-crown-6 ether in dimethyl sulfoxide T=20°C; 0.916667 h; Yield given. Further byproducts given. Yields of byproduct given;

sodium tetrahydroborate; 18-crown-6 ether; potassium tert-butylate in dimethyl sulfoxide T=20°C; 3 h; Yield given. Further byproducts given. Yields of byproduct given;

lithium aluminium tetrahydride in tetrahydrofuran; diethyl ether 16 h; Heating;