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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1752664Generated: October 25, 2026

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

https://huagongshe.com/reaction/1752664

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-IsocyanatothiopheneHCID 2776375—
Reactant4-Cyclopentylamino-8-methoxy-quinoline-3-carboxylic acid ethyl esterHCID 67249718—
Product1-Cyclopentyl-7-methoxy-3-thiophen-2-yl-1H-pyrimido[5,4-c]quinoline-2,4-dioneHCID 5832939648.3%

Reaction Steps

1-Cyclopentyl-7-methoxy-3-thiophen-2-yl-1H-pyrimido[5,4-c]quinoline-2,4-dione (19 mg) was prepared from 4-cyclopentylamino-8-methoxy-quinoline-3-carboxylic acid ethyl ester (0.10 mmol) and 2-isocyanatothiophene (0.4 mmol) following general procedure C. LCMS: m/z 394 [M+1]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09163022B2
Source datasetuspto-grants-2015_10
ORD IDord-911cdef73c0d4d3ca14ec634931ae331
Source noteuspto-grants-2015_10