The mixture was stirred under nitrogen atmosphere till a clear solution was obtained. Tert-butyldiphenylsilylchloride (TBDPS-Cl, 8.1 mL, 31.22 mmol) solution in 10 mL of DCM was then added slowly drop-wise for over a period of 1 h
The mixture was stirred under nitrogen atmosphere till a clear solution was obtained. Tert-butyldiphenylsilylchloride (TBDPS-Cl, 8.1 mL, 31.22 mmol). Solution in 10 mL of DCM was then added slowly drop-wise for over a period of 1 h.