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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 256472Generated: October 30, 2026

2,5-Difluoro-4-chloropyrimidine → HCID 178517766, compound

https://huagongshe.com/reaction/256472

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,5-Difluoro-4-chloropyrimidineHCID 13711163—
ReactantHCID 178509021HCID 178509021—
SolventWaterHCID 962—
ProductHCID 178517766HCID 178517766—

Reaction Steps

A process for the preparation of 5-fluorocytosine comprising reacting 2,5-difluoro-4-chloropyrimidine with a proton acid in the presence of water to yield 2-hydroxy-4-chloro-5-fluoropyrimidine, and reacting the 2-hydroxy-4-chloro-5-fluoropyrimidine with ammonia to yield 5-fluorocytosine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04703121
Source datasetuspto-grants-1987_10
ORD IDord-6e8021183d854e85b10af79dbaa5f0a1
Source noteuspto-grants-1987_10