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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1978845Generated: October 31, 2026

1-Chloro-3-(triphenyl phosphoranylidene)propan-2-one → 3-[4-Chloro-3-(4-chloro-3-oxobut-1-enyl)-phenyl]-2,4-dioxo-1-methyl-6-trifluoromethyl-1,2,3,4-tetrahydropyrimidine

https://huagongshe.com/reaction/1978845

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Chloro-3-(triphenyl phosphoranylidene)propan-2-oneHCID 287004—
Reactant2-Chloro-5-[3,6-dihydro-2,6-dioxo-3-methyl-4-trifluoromethyl-1(2H)-pyrimidinyl]benzaldehydeHCID 21201225—
SolventMethanolHCID 887—
Product3-[4-Chloro-3-(4-chloro-3-oxobut-1-enyl)-phenyl]-2,4-dioxo-1-methyl-6-trifluoromethyl-1,2,3,4-tetrahydropyrimidineHCID 86756858—

Reaction Steps

4.6 g of chloroacetylmethylenetriphenylphosphorane were added to a solution of 3.3 g of 3-[4-chloro-3-formylphenyl]-2,4-dioxo-1-methyl-6-trifluoromethyl-1,2,3,4-tetrahydropyrimidine in 100 ml of methanol, and stirring was carried out for 10 hours at room temperature. The precipitate which had separated out was isolated, washed with petroleum ether and dried.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06239074B1
Source datasetuspto-grants-2001_05
ORD IDord-e7001cb0499d4b6fb558d98658883280
Source noteuspto-grants-2001_05