HCID 86731081, compound → HCID 72702341, compound

Participants

Reaction Steps

Intermediate 23 was prepared as a white powder following the procedure described for Intermediate 16 by replacing indoline-2,3-dione with 4-trifluoromethoxy-phenylindoline-2,3-dione. 1H NMR (400 MHz, chloroform-d) δ ppm 11.90 (1 H, br. s.), 11.28 (1 H, br. s.), 8.22 (1 H, br. s.), 7.36-7.53 (1 H, m), 7.43 (1 H, br. s.), 4.61 (2 H, d, J=7.1 Hz), 1.54 (3 H, t, J=6.9 Hz). LC-MS (ESI) m/z 317.9 (M+H), RT=2.00 min (Method B).

Provenance & Evidence