Phosphorus oxychloride → HCID 71086349, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 4,5-dihydro-1H-benzo[e][1,3]diazepin-3(2H)-one (Boyer, J. H. et al., J. Chem. Soc., Perkin Trans. I, 2137-2140 (1988)) (70 mg, 0.43 mmol) and POCl3 (805 μL, 8.63 mmol) was heated at 106° C. for 2 h. The reaction mixture was then concentrated in vacuo, dissolved in CHCl3 and azeotroped with PhMe. The residue was dissolved in THF (1.0 mL) and treated with 2-methoxy-N-methylethanamine (70 μl, 0.65 mmol). The resulting reaction mixture was stirred at room temperature overnight and then concentrated in vacuo. The residue was purified by preparative HPLC to give the title compound (29 mg, 28%). 1H NMR (CDCl3) δ 7.38-7.31 (m, 2H), 7.31-7.21 (m, 2H), 5.95 (br s, 1H), 4.61 (d, J=4.6 Hz, 2H), 4.39 (d, J=4.6 Hz, 2H), 3.56-3.51 (m, 2H), 3.42 (s, 3H), 3.40-3.36 (m, 2H), 3.10 (s, 3H); MS(ESI+) m/z 234.1 (M+H)+.

Provenance & Evidence