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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 367771Generated: October 26, 2026

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

https://huagongshe.com/reaction/367771

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-CyanopyridineHCID 79—
ReactantPhosphorus oxychlorideHCID 24813—
ReactantEthyl 2-amino-5-(trifluoromethyl)thiophene-3-carboxylateHCID 18460227—
Product4-Chloro-2-(pyridin-3-yl)-6-trifluoromethyl-thieno-[2,3-d]-pyrimidineHCID 18460417—

Reaction Steps

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

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06133271
Source datasetuspto-grants-2000_10
ORD IDord-3fc56ee614b944948595fc22fae37c3e
Source noteuspto-grants-2000_10