The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2025
Filed:
Mar. 09, 2023
Imam Abdulrahman Bin Faisal University, Dammam, SA;
Samar A. Abubshait, Dammam, SA;
Haya A. Abubshait, Dammam, SA;
Sara Nabil Shaban, Cairo, EG;
Asma Mohmmad Elsharif, Dammam, SA;
Hamad M. Alkahtani, Riyadh, SA;
Fadilah Sfouq Aleanizy, Riyadh, SA;
M. Nasiruzzaman Shaikh, Dhahran, SA;
Imam Abdulrahman Bin Faisal Universty, Dammam, SA;
Abstract
A method of making a pyrazole compound includes mixing a diazonium salt with a reactant in the presence of a solvent, thereby coupling a diazo group of the diazonium salt to an α-carbon atom of the reactant to form a reaction intermediate having a formula of (I) or (II); mixing the reaction intermediate and hydrazine in the presence of a superparamagnetic iron oxide nanoparticles catalyst thereby cyclizing the hydrazine with an ester group of the reaction intermediate to form the pyrazole compound having a formula of (III) or (IV).