1,2-Ethanediamine, N1,N1,N2-trimethyl- → HCID 86698330, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1,3-dibromo-5-fluorobenzene (LXXIV) (4 g, 15.75 mmol) in toluene (50 mL) was added tBuOK (5.3 g, 47.25 mmol) and N1,N1,N2-trimethylethane-1,2-diamine (2.778 mL, 31.5 mmol). The reaction was stirred at 110° C. overnight. The solvent was removed under vacuum and the residue was partitioned between EtOAc and water. The organic layer was separated, washed with water, brine, dried over MgSO4 and evaporated under vacuum. The crude product was purified on a silica gel column (100% CHCl3→5:95 MeOH:CHCl3) to produce N1-(3-bromo-5-fluorophenyl)-N2,N2-dimethylethane-1,2-diamine (LXXV) as a brown viscous oil (1.02 g, 3.91 mmol, 24.8% yield). 1H NMR (DMSO-d6, 500 MHz) δ ppm 2.17 (s, 6H), 2.40 (t, J=3.5 Hz, 2H), 3.01-3.09 (m, 2H), 6.10 (t, J=5 Hz, 1H), 6.38 (dt, J=12 Hz, J=2 Hz, 1H), 6.51 (dt, J=8.5 Hz, J=2 Hz, 1H), 6.60 (s, 1H); ESIMS found C12H16BrFN2 m/z 261 (M+H).

Provenance & Evidence