1-(5-bromo-1-benzofuran-2-yl)ethanol

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Using 1-(5-bromo-1-benzofuran-2-yl)ethanol (6.11 g, 25.4 mmol), DMF (50 mL), methanesulfonyl chloride (2.9 mL, 38.0 mmol), triethylamine (7.5 mL, 50.8 mmol) and sodium azide (8.64 g, 127 mmol), an operation in the same manner as in Reference Example 22 was performed to give the title compound 5.22 g as an oil. This was used for the next step without purification.