One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 66357-35-5, Name is Ranitidine, formurla is C13H22N4O3S. In a document, author is An, Cui, introducing its new discovery. SDS of cas: 66357-35-5.
Selenium Radical Mediated Cascade Cyclization: Concise Synthesis of Selenated Benzofurans (Benzothiophenes)
Presented in this work is a novel methodology for the synthesis of selenated benzofurans (or benzothiophenes) via AgNO2-catalyzed radical cyclization of 2-alkynylanisoles (or 2-alkynylthioanisoles), Se powder, and arylboronic acids. This method enables the construction of a benzofuran (benzothiophene) ring, two C-Se bonds, and a C-O(S) bond as well as the cleavage of a C-O(S) bond in a single step. Preliminary mechanistic studies imply that the AgNO2-catalyzed cyclization proceeds via an aryl selenium radical intermediate.
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Reference:
Benzofuran – Wikipedia,
,Benzofuran | C8H6O – PubChem