Triethylamine → HCID 178478363, compound

Participants

Reaction Steps

To a round bottomed flask was added cis-N1-(benzo[d]thiazol-2-yl)cyclobutane-1,3-diamine (0.5306 g, 1.816 mmol), 2,3-dichloropyrazine (0.271 g, 1.816 mmol, Pfaltz & Bauer, Inc.), and triethylamine (0.758 ml, 5.45 mmol, Sigma-Aldrich Chemical Company, Inc.) to stir at 75° C. in DMSO (1.816 ml) to stir for 6 h. The reaction mixture was diluted with water and extracted with CH2Cl2. The organic extract was washed with water, saturated NaCl, dried over MgSO4, filtered and concentrated in vacuo. The crude product was adsorbed onto a plug of silica gel and chromatographed through a Biotage SNAP HP-silica gel column (50 g), eluting with a gradient of 10% to 100% EtOAc in hexane, to provide the title compound (0.1952 g, 0.588 mmol, 32.4% yield). LCMS showed product peak at 1.625 min (m+1=332.0). 1H NMR (400 MHz, DMSO-d6) δ ppm 2.06-2.20 (m, 2 H) 2.75-2.87 (m, 2 H) 3.98-4.11 (m, 1 H) 4.11-4.22 (m, 1 H) 7.03 (td, J=7.53, 1.17 Hz, 1 H) 7.19-7.28 (m, 2 H) 7.40 (d, J=7.24 Hz, 1 H) 7.60 (d, J=2.54 Hz, 1 H) 7.69 (dd, J=7.82, 0.78 Hz, 1 H) 8.05 (d, J=2.74 Hz, 1 H) 8.32 (d, J=6.65 Hz, 1 H)

Provenance & Evidence