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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2302667Generated: November 2, 2026

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

https://huagongshe.com/reaction/2302667

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-CyanopyridineHCID 79—
ReactantPhosphorus oxychlorideHCID 24813—
ReactantEthyl 2-amino-5-ethyl-3-thenoateHCID 78263—
Product4-Chloro-2-(pyridin-3-yl)-6-ethyl-thieno-[2,3-d]-pyrimidineHCID 18460478—

Reaction Steps

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

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06432950B1
Source datasetuspto-grants-2002_08
ORD IDord-412d925531f045d9b3e69ff4ea6dd10f
Source noteuspto-grants-2002_08