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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 722013Generated: October 26, 2026

Phosphorus oxychloride → 2-(4-Chlorophenyl)-4-chloro-6,7-dihydro-5H-cyclopenta[d]pyrimidine

https://huagongshe.com/reaction/722013

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
ReactantHCID 178517488HCID 178517488—
Product2-(4-Chlorophenyl)-4-chloro-6,7-dihydro-5H-cyclopenta[d]pyrimidineHCID 11161400—

Reaction Steps

8.0 g of 2-(4-chlorophenyl)-4-hydroxy-6,7-dihydro-5H-cyclopenta[d]pyrimidine are heated to 100° C in 10 ml of phosphorus oxychloride. After 3 hours, the cooled solution was cautiously poured onto ice water. The crystalline product was filtered off with suction, washed well with water and dried in vacuo at room temperature.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07138398B2
Source datasetuspto-grants-2006_11
ORD IDord-ed0ea368e777462c95fdaa9bb43507b3
Source noteuspto-grants-2006_11