New discoveries in chemical research and development in 2021. In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. 105832-38-0, Name is 2-(2,5-Dioxopyrrolidin-1-yl)-1,1,3,3-tetramethylisouronium tetrafluoroborate, molecular formula is C9H16BF4N3O3. In an article, author is Bai, Xuguan,once mentioned of 105832-38-0, Application In Synthesis of 2-(2,5-Dioxopyrrolidin-1-yl)-1,1,3,3-tetramethylisouronium tetrafluoroborate.
An unexpected BF3.OEt2-catalyzed Michael addition/cyclization/dehydration sequence of ortho-hydroxyenaminones with aromatic or aliphatic aldehyde-derived beta,gamma -unsaturated alpha -ketoesters has been achieved to afford a wide range of fused hydrogenated benzoxazole polycycles in 67-95% yields in a highly diastereoselective manner. When isatin-derived beta,gamma -unsaturated alpha -ketoesters were employed as substrates, completely different reactivities were observed, delivering an array of new atropisomers with an oxindole-substituted N-C axially chiral pyrrole-phenol backbone in up to 97% yield. Moreover, DFT calculations were conducted to account for the possible reaction pathway and the stereochemistry.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem