Triethylamine → HCID 22050940, compound

Participants

Reaction Conditions

Reaction Steps

A 10 mL round bottomed flask equipped with stirbar and nitrogen inlet was charged with compound of Example 633 (180 mg, 0.43 mmol), acetoxyacetyl chloride (51 μL, 0.47 mmol), triethylamine (119 μL, 0.86 mmol) and tetrahydrofuran (3.0 mL). After stirring at 25° C. for 20 min the reaction was completed by LC-MS. NaOH (2.5M, 2.24 mmol, 1.0 mL) and MeOH (2.0 mL) was added and stirred for 20 min to give the title compound. The compound precipitated out of solution. The precipitated was filtered and washed with water and diethyl ether to obtain the title compound (130 mg, 64%) as a white solid. 1H NMR (400 MHz, (DMSO) δ 7.9 (d, J=8.2, 1H), 7.6 (q, J=8.5 and 6.9 Hz, 1H), 7.3 (t, J=8.7 Hz, 1H), 7.1 (t, J=7.9 Hz, 1H), 6.9 (s, 2H), 6.5 (s, 1H), 5.25 (s, 2H), 4.1 (d, J=5.5 Hz, 2H), 3.9 (t, J=8.6 Hz, 2H), 3.42 (t, J=5.4 Hz, 1H), 3.35 (t, J=4.8 Hz, 1H), 3.2 (t, J=8.5 Hz, 2H), 2.3 (s, 3H) ppm. ES-HRMS m/z 475.1220 (M+H calcd for C24H22ClF2N2O4 requires 475.1231).

Provenance & Evidence