Methyl iodide → HCID 66833735, compound

Participants

Reaction Conditions

Reaction Steps

While under an atmosphere of argon, a solution of tert-butyl 2-(tert-butoxycarbonylamino)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)butyl)hex-5-enoate (1.35 g, 2.89 mmol) in freshly distilled (THF 5 mL) was cooled to 0° C. and treated with sodium bis(trimethylsilyl)amide (6 mL, 1.0 M in THF) under argon. After stirring for 10 min, iodomethane (2.04 g, 14.4 mmol) was added and the reaction was warmed to room temperature and stirred for 16 h. After being complete by TLC, the reaction mixture was cooled to 0° C., diluted with ethyl ether and washed with saturated aqueous NaCl, dried over MgSO4, filtered and concentrated. Purification by MPLC (1-20% ethyl acetate in heptane with 0.5% triethylamine over 8 CV) gave tert-butyl 2-(tert-butoxycarbonyl(methyl)amino)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)butyl)hex-5-enoate as a colorless oil (1.27 g, 91%). Rf 0.35 (20% ethyl acetate in heptane). ESI MS found for C26H48BNO6 m/z [482.3 (M+1)].

Provenance & Evidence