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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1825762Generated: October 28, 2026

Potassium Bromide → 8,9-Dimethoxy-2,3-methylenedioxy-5-[2-(N,N-dimethylamino)-1-methylethyl]-5H-dibenzo [c,h]1,6-naphthyridin-6-one

https://huagongshe.com/reaction/1825762

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium BromideHCID 253877—
ReactantN-(6,7-Methylenedioxyquinolin-4-yl)-N-[2-(N,N-dimethylamino)--methylethyl)-2-iodo-4,5-dimethoxybenzamideHCID 22139524—
Product8,9-Dimethoxy-2,3-methylenedioxy-5-[2-(N,N-dimethylamino)-1-methylethyl]-5H-dibenzo [c,h]1,6-naphthyridin-6-oneHCID 2213949130.4%

Reaction Steps

Prepared from N-(6,7-Methylenedioxyquinolin-4-yl)-N-[2-(N,N-dimethylamino)-1-methylethyl)-2-iodo-4,5-dimethoxybenzamide; (30.4% yield); reaction time 30 min; mp 186-187° C.; IR (KBr) 1649; 1H NMR (CDCl3); δ 1.95-1.98 (m, 9H), 2.77 (dd, 1H, J=12.0, 8.0), 3.21 (dd, 1H, J=12.0, 8.0), 4.06 (s, 3H), 4.13 (s, 3H), 4.84-4.92 (m, 1H), 6.17 (s, 2H), 7.46 (s, 1H), 7.66 (s, 1H), 7.77 (s, 1H), 7.87 (s, 1H), 9.35 (s, 1H); 13C NMR (CDCl3) δ 19.7, 45.5, 56.2, 56.3, 59.5, 63.1, 100.9, 101.9, 102.1, 107.0, 108.7, 112.4, 115.2, 120.5, 127.3, 142.6, 143.3, 147.0, 147.3, 149.9, 150.1, 154.0, 164.9; HRMS calcd for C24H25N3O5H: 436.1794; found 436.1863.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07049315B2
Source datasetuspto-grants-2006_05
ORD IDord-a29e9e3a43f24325951c78262318139d
Source noteuspto-grants-2006_05