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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 367772Generated: October 26, 2026

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

https://huagongshe.com/reaction/367772

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus oxychlorideHCID 24813—
ReactantEthyl 2-Amino-5-methylthiophene-3-carboxylateHCID 4062885—
Reactant1,2-Oxazole-5-carbonitrileHCID 11228764—
Product4-Chloro-2-(isoxazol-5-yl)-6-methyl-thieno-[2,3-d]-pyrimidineHCID 18460250—

Reaction Steps

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

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06133271
Source datasetuspto-grants-2000_10
ORD IDord-021335ead7c34f77a532cda74726761d
Source noteuspto-grants-2000_10