反应详情

A round bottom flask was charged with (R)-2-(5-amino-6-chloro-1-oxoisoquinolin-2(1H)-yl)propanamide (50 mg, 0.0002 mol), N,N-dimethylformamide (1 mL, 0.01 mol), N,N-diisopropylethylamine (60 μL, 0.0004 mol), N,N,N′,N′-tetramethyl-O-(7-azabenzotriazol-1-yl)uronium hexafluorophosphate (100 mg, 0.0004 mol) and 2-(4-(trifluoromethyl)phenyl)acetic acid (46 mg, 0.00022 mol) and the reaction stirred at room temperature overnight. The reaction was only 60% complete. Stirring for an additional 6 hours did not improve the reaction. The solvent was removed and the residue purified by preparative HPLC (reverse phase) to obtain the product as an off white solid. MS m/z=452.2 (M+H). 1H NMR (400 MHz; DMF) δ 10.41 (s, 1H), 8.34 (d, J=8.71 Hz, 1H), 7.93 (d, J=8.22 Hz, 1H), 7.84 (d, J=10.96 Hz, 1H), 7.80 (t, J=9.13 Hz, 1H), 7.68 (d, J=8.53 Hz, 1H), 7.44 (bs, 1H), 6.62 (d, J=7.89 Hz, 1H), 5.67-5.61 (q, J=7.24 Hz, 1H), 4.09 (s, 2H), 1.72 (d, J=7.50 Hz, 3H).

1. stirringStirring for an additional 6 hours
2. customthe reaction
3. customThe solvent was removed
4. customthe residue purified by preparative HPLC (reverse phase)
5. customto obtain the product as an off white solid