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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 367793Generated: October 25, 2026

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

https://huagongshe.com/reaction/367793

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-CyanopyridineHCID 7506—
ReactantPhosphorus oxychlorideHCID 24813—
ReactantEthyl 2-amino-4-methylthiophene-3-carboxylateHCID 521132—
Product4-Chloro-2-(pyridin-4-yl)-5-methyl-thieno-[2,3-d]-pyrimidineHCID 18459892—

Reaction Steps

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

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06133271
Source datasetuspto-grants-2000_10
ORD IDord-17b0c4c05b70469f93aaa6776d8607e0
Source noteuspto-grants-2000_10