Boron trifluoride etherate → HCID 86701035, compound

Participants

Reaction Steps

To a solution of 3-(tert-butyldimethylsilyloxy)propanenitrile (11.1 g, 60 mmol) in Et2O (400 mL) was added titanium tetraisopropanolate (28.9 g, 102 mmol) under N2 atmosphere. Ethylmagnesium bromide (3M in Et2O, 50 mL) was slowly added drop-wise at 0° C. The mixture was stirred at rt for 1 hr. Boron trifluoride etherate (17.0 g, 120 mmol) was slowly added at 0° C. The mixture was stirred at rt for 1 hr. The mixture was quenched with 10% aq. NaOH (300 mL) and then extracted with DCM (3×). The combined organic layer was dried over Na2SO4 and concentrated. The residue was purified by silica gel column chromatography (gradient elution 5˜50% EtOAc/petroleum ether) to afford 1-(2-(tert-butyldimethylsilyloxy)ethyl)cyclopropanamine (3.9 g, 30%) as a colorless oil. ESI-MS (EI+, m/z): 216.2 [M+H]+.

Provenance & Evidence