3-(Bromomethyl)pyridazine hydrobromide → 6-[2-[1-(Pyridazin-3-ylmethyl)-4-piperidyl]ethyl]-[1,3]dioxolo[4,5-f]isoindole-5,7-dione

Participants

Reaction Steps

Compound I-37 was prepared according to the method in example 3, using 6-[2-(4-piperidyl)ethyl]-[1,3]dioxolo[4,5-f]isoindole-5,7-dione hydrochloride (compound II-1) and 3-bromomethylpyridazine hydrobromide as the raw materials: 1H NMR (CDCl3): δ 1.26-1.32 (m, 3H), 1.58 (q, 2H, J=5.0 Hz), 1.75 (d, 2H, J=8.9 Hz), 2.12 (t, 2H, J=10.6 Hz), 2.81 (d, 2H, J=11.1 Hz), 3.65 (t, 2H, J=7.2 Hz), 3.84 (s, 2H), 6.15 (s, 2H), 7.19 (s, 2H), 7.45 (dd, 1H, J=8.4, 4.9 Hz), 7.66 (dd, 1H, J=8.4, 1.2 Hz), 9.07 (dd, 1H, J=4.8, 1.6 Hz): m/z 395 [M+H]+.

Provenance & Evidence