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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 533104Generated: October 25, 2026

6-Isocyanato-2,3-dihydro-1,4-benzodioxine → 1-Cyclopentyl-3-(2,3-dihydro-benzo[1,4]dioxin-6-yl)-7-methoxy-1H-pyrimido[5,4-c]quinoline-2,4-dione

https://huagongshe.com/reaction/533104

Reaction equation

Participants

RoleNameHCIDCharge
Reactant6-Isocyanato-2,3-dihydro-1,4-benzodioxineHCID 2776172—
Reactant4-Cyclopentylamino-8-methoxy-quinoline-3-carboxylic acid ethyl esterHCID 67249718—
Product1-Cyclopentyl-3-(2,3-dihydro-benzo[1,4]dioxin-6-yl)-7-methoxy-1H-pyrimido[5,4-c]quinoline-2,4-dioneHCID 5832946940.4%

Reaction Steps

1-Cyclopentyl-3-(2,3-dihydro-benzo[1,4]dioxin-6-yl)-7-methoxy-1H-pyrimido[5,4-c]quinoline-2,4-dione (18 mg) was prepared from 4-cyclopentylamino-8-methoxy-quinoline-3-carboxylic acid ethyl ester (0.1 mmol) and 6-isocyanato-2,3-dihydro-benzo[1,4]dioxine (0.5 mmol) following general procedure C. LCMS: m/z 446 [M+1]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08853226B2
Source datasetuspto-grants-2014_10
ORD IDord-28c1c282843b463081a3b4998ba345a1
Source noteuspto-grants-2014_10