Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2302675Generated: October 27, 2026

Phosphorus oxychloride → 4-Chloro-2-(isoxazol-5-yl)-6-chloro-thieno-[2,3-d]-pyrimidine

https://huagongshe.com/reaction/2302675

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
Reactant1,2-Oxazole-5-carbonitrileHCID 11228764—
Reactant2-Amino-5-chloro-3-ethoxycarbonyl-thiopheneHCID 14169966—
Product4-Chloro-2-(isoxazol-5-yl)-6-chloro-thieno-[2,3-d]-pyrimidineHCID 18460432—

Reaction Steps

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

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06432950B1
Source datasetuspto-grants-2002_08
ORD IDord-793d9c58c78c422e91bd4b0d6477fcaf
Source noteuspto-grants-2002_08