3-Hydroxypyridine → HCID 21883571, compound

Participants

Reaction Steps

The title compound was prepared from 3-hydroxypyridine and ethyl 6-chloro-7-fluoro-2-(trifluoromethyl)-2H-1-benzopyran-3-carboxylate (Example 183, Step 2) via a procedure similar to that described in Example 183, Steps 3 and 4: mp 237.8–238.8° C. 1H NMR (DMSO-d6/300 MHz) 13.3 (br s, 1H), 8.42 (m, 2H), 7.87 (s, 1H), 7.83 (s, 1H), 7.48 (m, 2H), 6.72 (s, 1H), 5.93 (q, 1H, J=7.2 Hz). 19F NMR (DMSO-d6/282 MHz) −77.8 (d, J=7.2 Hz). FABLRMS m/z 372 (M+H). ESHRMS m/z 370.0083 (M−H, Calc'd 370.0094). Anal. Calc'd for C16H9ClF3NO4: C, 51.70; H, 2.44; N, 3.77; Cl, 9.54. Found: C, 51.49; H, 2.47; N, 3.70; Cl, 9.69.

Provenance & Evidence