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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1719960Generated: October 26, 2026

Dimethyl[[6-(3-cyclopentylpropionamido)-4-quinazolinylamino]methylene]propanedioate → methyl 4-oxo-10-(3-cyclopentylpropionamido)-4H-pyrimido[1,2-C]quinazoline-3-carboxylate

https://huagongshe.com/reaction/1719960

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethyl[[6-(3-cyclopentylpropionamido)-4-quinazolinylamino]methylene]propanedioateHCID 13060507—
SolventDiphenyl EtherHCID 7583—
Productmethyl 4-oxo-10-(3-cyclopentylpropionamido)-4H-pyrimido[1,2-C]quinazoline-3-carboxylateHCID 1306055870.5%

Reaction Conditions

Temperature255 °C

Reaction Steps

A mixture of dimethyl[[6-(3-cyclopentylpropionamido)-4-quinazolinylamino]methylene]propanedioate (6.9 g) in diphenyl ether (53 ml) was stirred at 255° C. for 15 minutes and cooled to ambient temperature. The resulting solid was collected, washed with hexane and dried. There was obtained methyl 4-oxo-10-(3-cyclopentylpropionamido)-4H-pyrimido[1,2-C]quinazoline-3-carboxylate (4.5 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04543356
Source datasetuspto-grants-1985_09
ORD IDord-75c201dac2b740bf8d007073cecaba22
Source noteuspto-grants-1985_09