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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 259806Generated: October 25, 2026

Formamide → 5-chloro-6-methyl-1H-pyrimidin-4-one

https://huagongshe.com/reaction/259806

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormamideHCID 713—
ReactantSodium MethoxideHCID 10942334—
ReactantMethyl 3-amino-2-chloro-2-butenoateHCID 76224675—
SolventMethanolHCID 887—
Product5-chloro-6-methyl-1H-pyrimidin-4-oneHCID 178433212—

Reaction Steps

25.9 g (0.17 mol) of methyl 3-amino-2-chloro-2-butenoate are reacted with 11.7 g (0.26 mol) of formamide and 51 ml of sodium methylate solution in 20 ml of methanol and worked up in analogy to Example 9 (reaction time 20 h). Yield: 16.6 g (67.5%)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05523404
Source datasetuspto-grants-1996_06
ORD IDord-58ad2a4fdb2f4d9bb1f83c2c5786fa1f
Source noteuspto-grants-1996_06