Triethylamine → HCID 58583287, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2,6-dichloropyrazine (5.0 g, 34 mmol) in n-BuOH (30 mL) was added triethylamine (6.8 g, 9.4 mL, 67 mmol) and (1R,2S)-(+)-cis-1-amino-2-indanol (5.0 g, 34 mmol). The mixture was heated at 115° C. overnight. The solution was cooled to rt and concentrated. Dissolve material in EtOAc (200 mL) and remove insoluble material by vacuum filtration. Wash filtrate sequentially with 4 N NaOH and sat. aq. NaCl. Dry organic extract over MgSO4, filter and concentrate. Purify by biotage MPLC (90 g column, 10% ethyl acetate/hexanes) to afford 4.85 g (57%) of (1R,2S)-1-[(6-chloropyrazin-2-yl)amino]-2,3-dihydro-1H-inden-2-ol as a solid: 1H NMR (CDCl3) δ 2.83–2.87, 3.08–3.13, 3.32, 4.54, 5.11, 5.28–5.31, 7.18–7.28, 7.73, 8.12; MS (ESI+) for C13H12ClN3O m/z 262 (M+H)+.

Provenance & Evidence