Sodium methanethiolate → 6-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-7-fluoro-3-(methylsulfanyl)-1,2-benzoxazole-5-carbaldehyde

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Reaction Steps

To an ice cold solution of 3-chloro-6-[(2R,6S)-2,6-dimethylmorpholin-4-yl]-7-fluoro-1,2-benzoxazole-5-carbaldehyde (Intermediate 534, 0.3 g, 0.916 mmol) in dioxane was added sodium thiomethoxide (21% aq solution, 0.134 mL, 1.923 mmol) and stirred at room temperature for 12 hours. Reaction mixture was diluted with water and extracted with EtOAc (50 mL). Organic phase washed with brine (2×10 mL), dried over anhydrous sodium sulfate and, filtered, concentrated to give tilt product as white solid. Yield: 280 mg (90%).

Provenance & Evidence