“…The preparation of the title compound 1 is well-known, 3 but another procedure was developed. Boron trifluoride etherate (5.4 mL, 43 mmol) was added to an ice-cold solution of 2-acetamido-1,3,4,6-tetra-O-acetyl-2-deoxy-β-D-glucopyranose (10.00 g, 25.7 mmol) and p-methoxyphenol (9.50 g, 76.7 mmol) in dry methylene chloride (180 mL) under an argon atmosphere.…”