Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 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.
Unexpected Cascade Reactions of Ortho-Hydroxyenaminones and beta,gamma-Unsaturated alpha-Ketoesters to Access Hydrogenated Benzoxazolepolycycles and Pyrrole-Phenol Atropisomers
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