Unexpected C−C Bond Cleavage and C−C Bond Formation Observed in the Reaction of a Cationic Iridium Complex with Heteroatom-Substituted Cyclopropanes
作者:Mitchell R. Anstey、Cathleen M. Yung、Juana Du、Robert G. Bergman
DOI:10.1021/ja068312a
日期:2007.1.1
[Cp*(PMe3)Ir(η3-C3H4CH3)][OTf] (8) and the corresponding amine or alcohol. The methyl group initially bound to iridium is no longer extruded as methane, but instead is incorporated into the allyl moiety to give a new carbon−carbon bond. A detailed mechanistic study provides evidence in support of an initial C−C bond activation mechanism as opposed to the initial C−H bond activation observed with other known
Biocatalytic and Chemo-Enzymatic Synthesis of Quinolines and 2-Quinolones by Monoamine Oxidase (MAO-N) and Horseradish Peroxidase (HRP) Biocatalysts
作者:Haoyue Xiang、Salvatore Ferla、Carmine Varricchio、Andrea Brancale、Nicola L. Brown、Gary W. Black、Nicholas J. Turner、Daniele Castagnolo
DOI:10.1021/acscatal.2c05902
日期:2023.3.3
oxidase (MAO-N) enzymes were used to effectively catalyze the biotransformation of THQs into the corresponding aromatic quinoline derivatives, while N-cyclopropyl-N-alkylanilines were converted into 2-quinolone compounds through a horseradish peroxidase (HRP)-catalyzed annulation/aromatization reaction followed by Fe-mediated oxidation.
Autocatalytic Radical Ring Opening ofN-Cyclopropyl-N-phenylamines Under Aerobic Conditions − Exclusive Formation of the Unknown Oxygen Adducts,N-(1,2-Dioxolan-3-yl)-N-phenylamines
作者:Kandatege Wimalasena、Heang B. Wickman、Mathew P. D. Mahindaratne
room temperature underaerobicconditions. The rate of this conversion was found to be significantly increased by the presence of a catalytic amount of the single-electron oxidizing agent tris(1,10-phenanthroline)FeIII hexafluorophosphate or of the hydrogen-abstracting agents benzoyl peroxide or tert-butyl peroxide/UV light. Based on the regio- and stereochemical outcomes of aerobic ring-opening reactions