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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 367797Generated: October 25, 2026

4-Cyanopyridine → 4-Chloro-2-(pyridin-4-yl)-5,6-dimethyl-thieno-[2,3-d]-pyrimidine

https://huagongshe.com/reaction/367797

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-CyanopyridineHCID 7506—
ReactantPhosphorus oxychlorideHCID 24813—
ReactantEthyl 2-amino-4,5-dimethyl3-thenoateHCID 78536—
Product4-Chloro-2-(pyridin-4-yl)-5,6-dimethyl-thieno-[2,3-d]-pyrimidineHCID 18460494—

Reaction Steps

With the procedure of Example 477, the reaction of 4-cyanopyridine and 2-amino-4,5-dimethyl-3-ethoxycarbonyl-thiophene, and the subsequent reaction with POCl3 yields 4-chloro-2-(pyridin-4-yl)-5,6-dimethyl-thieno-[2,3-d]-pyrimidine

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06133271
Source datasetuspto-grants-2000_10
ORD IDord-ea58be6a11cd4f56999cfeeb4e5b8ec7
Source noteuspto-grants-2000_10