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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2302690Generated: November 2, 2026

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

https://huagongshe.com/reaction/2302690

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridine-2-carbonitrileHCID 7522—
ReactantPhosphorus oxychlorideHCID 24813—
ReactantEthyl 2-amino-4,5-dimethyl3-thenoateHCID 78536—
Product4-Chloro-2-(pyridin-2-yl)-5,6-dimethyl-thieno-[2,3-d]-pyrimidineHCID 18460061—

Reaction Steps

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

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06432950B1
Source datasetuspto-grants-2002_08
ORD IDord-a2197badc1544aedab1c01cc71f00e21
Source noteuspto-grants-2002_08