Iodine → HCID 66738218, compound

Participants

Reaction Conditions

Reaction Steps

Add a solution of [1-(6-fluoro-pyridin-3-yl)-ethyl]-carbamic acid tert-butyl ester (9.3 g, 38.8 mmol) in dry THF (90 mL) into tert-butyllithium (68.4 mL, 116.3 mmol, 1.7 M solution in pentane) in dry THF (70 mL) over 15 min under N2 at −78° C. Stir at −78° C. for 1 hour. Add a solution of iodine (14.8 g, 58.2 mmol) in dry THF (90 mL) over 15 min. Stir at −78° C. for 2 hours. Warm up to 0° C. Add water. Warm up to room temperature. Extract with ethyl acetate. Wash the organic layer with Na2CO3 solution, water and saturated aqueous sodium chloride, and dry over MgSO4. After filtration, concentrate and purify the crude by flash chromatography (5% to 20% ethyl acetate/hexane). Afford the desired product [1-(6-fluoro-4-iodo-pyridin-3-yl)-ethyl]-carbamic acid tert-butyl ester (2.8 g, 20%), MS (ES) m/z 367 [M+1]+.

Provenance & Evidence