1: 56 percent / 2 N NaOH / dioxane; H2O / pH = 7.5 2: 1.) N-methylmorpholine / tetramethylchloroformamidinium chloride; 2.) N-methylmorpholine / 1.) CH2Cl2, THF, -40 deg C, 5 min; 2.) THF, H2O, pH = 2.5, 30 min View Scheme

4-methyl-morpholine; tetramethyl-chloroformamidinium chloride 1.) CH2Cl2, THF, -40 deg C, 5 min; 2.) THF, H2O, pH = 2.5, 30 min; Yield given. Multistep reaction;