HMNTA Complexes of Tetravalent Metal Ions: On the Roles of Carbonyl Oxygen and Amine Nitrogen in the Stabilization of Gas-Phase M(HMNTA)24+ Complexes.
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DOI: 10.1021/jasms.0c00420
Abstract: Gas-phase tetrapositively charged M(HMNTA)24+ (M = Zr, Hf, Th, and U) ions were generated via electrospray ionization of the M(ClO4)4 and N,N,N',N',N″,N″-hexamethylnitrilotriacetamide (HMNTA) mixtures in acetonitrile. In these complexes, the Zr4+, Hf4+, Th4+, and U4+… read more here.
Keywords: nitrogen; hmnta; carbonyl oxygen; hmnta complexes ... See more keywords
Vinylation of Carbonyl Oxygen in 4-Hydroxycoumarin: Synthesis of Heteroarylated Vinyl Ethers
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DOI: 10.1055/s-0037-1610696
Abstract: The unique nucleophilic character of the carbonyl oxygen of 4-hydroxy coumarin has been observed by the BF3·OEt2 catalyzed reaction of 4-hydroxycoumarin and alkynes. The reactions of 4-hydroxycoumarin and substituted 4-hydroxycoumarin with various terminal alkynes have… read more here.
Keywords: synthesis heteroarylated; carbonyl oxygen; synthesis; heteroarylated vinyl ... See more keywords