2,5-Dimethoxytetrahydrofuran → HCID 11202178, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of benzo[1,2,5]thiadiazole-4-sulfonic acid [5-amino-2-(piperidine-1-carbonyl)-phenyl]-amide (EXAMPLE 24; 25 mg, 0.06 mmol) in glacial acetic acid (3 mL) was added 2,5-dimethoxytetrahydrofuran (8 μL, 0.06 mmol). The reaction mixture was heated to 120° C. for 45 min after which it was cooled to room temperature. The mixture was taken up in 4 mL of DCM and washed with water. The organic layer was removed, dried, and purified by preparative reversed-phase HPLC to afford the title compound (12 mg, 0.02 mmol, 43%). MS (ESI): m/z 468 [M+H]+, 490 [M+Na]+. HPLC (reversed-phase): RT=9.71 mm (single peak). 1H NMR (400 MHz, CDCl3): (rotameric broadening) 9.15 (s, 1H), 8.26 (dd, J=7.0, 1.0 Hz, 1H), 8.22 (dd, J=8.8, 1.0 Hz, 1H), 7.74 (d, J=2.1 Hz, 1H), 7.67 (dd, J=8.8, 7 Hz, 1H), 7.10 (d, J=8.3 Hz, 1H), 7.05 (m, 3H), 6.35 (t, J=2.2 Hz, 2H), 3.23 (bs, 4H), 1.61 (m, 2H), 1.48 (bs, 4H).

Provenance & Evidence