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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 633734Generated: October 30, 2026

2-Bromo-1-(2-cyclopropylmethoxypyrimidin-5-yl)ethanone → (8S)-2-chloro-9-[2-(2-cyclopropylmethoxypyrimidin-5-yl)-2-oxoethyl]-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one

https://huagongshe.com/reaction/633734

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Bromo-1-(2-cyclopropylmethoxypyrimidin-5-yl)ethanoneHCID 118199852—
Reactant(S)-8-chloro-2-(trifluoromethyl)-3,4-dihydro-1H-pyrimido[1,2-a]pyrimidin-6(2H)-oneHCID 136238740—
Product(8S)-2-chloro-9-[2-(2-cyclopropylmethoxypyrimidin-5-yl)-2-oxoethyl]-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-oneHCID 118194450—

Reaction Steps

180 mg (0.71 mmol) of (8S)-2-chloro-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one and 211.66 mg (0.78 mmol) of 2-bromo-1-(2-cyclopropylmethoxypyrimidin-5-yl)ethanone were used in the reaction. After purification by chromatography on silica gel (eluent: 80/20 DCM/MeOH), 160 mg of (8S)-2-chloro-9-[2-(2-cyclopropylmethoxypyrimidin-5-yl)-2-oxoethyl]-8-trifluoromethyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one are obtained, the characteristics of which are as follows:

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09321790B2
Source datasetuspto-grants-2016_04
ORD IDord-8585551b88844dd7a030d9b360023c0d
Source noteuspto-grants-2016_04