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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1053039Generated: October 26, 2026

3-Isocyanatothiophene → 1-Cyclopentyl-7-methoxy-3-thiophen-3-yl-1H-pyrimido[5,4-c]quinoline-2,4-dione

https://huagongshe.com/reaction/1053039

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-IsocyanatothiopheneHCID 2776380—
Reactant4-Cyclopentylamino-8-methoxy-quinoline-3-carboxylic acid ethyl esterHCID 67249718—
Product1-Cyclopentyl-7-methoxy-3-thiophen-3-yl-1H-pyrimido[5,4-c]quinoline-2,4-dioneHCID 58329451—

Reaction Steps

1-Cyclopentyl-7-methoxy-3-thiophen-3-yl-1H-pyrimido[5,4-c]quinoline-2,4-dione (21 mg) was prepared from 4-cyclopentylamino-8-methoxy-quinoline-3-carboxylic acid ethyl ester (0.1. mmol) and 3-isocyanato-thiophene (0.5 mmol) following general procedure C. LCMS: m/z 394 [M+1]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09393245B2
Source datasetuspto-grants-2016_07
ORD IDord-90f0ea4f3e4a4552b24ea8c72bed53f7
Source noteuspto-grants-2016_07