General Procedure E. L-selectride-promoted Reduction. The corresponding N-sulfinyl imine (1 equiv) was dissolved in dry THF (10 mL/mmol) and was cooled to 0 °C. L-selectride (1.0 M in THF, 3 equiv) was slowly added and the solution was allowed to warm to rt over a 10% aqueous citric acid (25 mL/mmol) were added to the residue, and after separation of the phases, the organic phase was washed with brine (25 mL/mmol), dried over Na2SO4, filtered, and concentrated in vacuo. General Procedure F. Deprotection of Sulfinamides. The corresponding sulfinamide (1 equiv) was dissolved in dry dioxane and HCl (4 M in dioxane, 3 equiv) was added. After stirring for 2 h at rt, the suspension was concentrated in vacuo. Then, Et2O (25 mL/mmol) was added to the residue, the product was filtered off and washed with Et2O.