Triethylamine → Methanesulfonic acid 2-[3-(2-methanesulfonyloxy-ethyl)-oxetan-3-YL]-ethyl ester

Participants

Reaction Steps

To a solution of 2-[3-(2-Hydroxy-ethyl)-oxetan-3-yl]-ethanol (123) (1.3 g, 8.9 mmol) in CH2Cl2 (20 mL) at 0° C. was added Et3N (2.7 g, 26.7 mmol) and methanesulfonyl chloride (2.0 g, 17.8 mmol). The solution was allowed to warm to RT and stirred for 15 min. The reaction mixture was diluted with water (80 mL). The aqueous phase was extracted with CH2Cl2 (3×50 mL) and the combined organic extracts were washed with brine (100 mL), dried over MgSO4, filtered, and concentrated to give the product (124) (2.0 g, 6.6 mmol, yield: 74%). ESI-MS (M+1): 303 calc. for C9H18O7S2 302.

Provenance & Evidence