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Yields of isolated products after column chromatography of reactions carried out on a 0.5 mmol scale. Conditions: (A) β-methoxysulphonamide (1.0 eq.), NaH (1.1 eq.), DMF, benzyl halide (1.1 eq.), 0 °C to r.t., 12 h. (B) β-Methoxysulphonamide (1.0 eq.), triphenylphosphine (1.4 eq.), benzyl alcohol (1.4 eq.), DIAD (2.0 eq.), THF, 0 °C to r.t., 12 h.
