Iridium-Catalyzed Arene <i>Ortho</i>-Silylation by Formal Hydroxyl-Directed C−H Activation
作者:Eric M. Simmons、John F. Hartwig
DOI:10.1021/ja1086547
日期:2010.12.8
the ortho-silylation of aryl ketone, benzaldehyde, and benzyl alcohol derivatives has been developed in which a hydroxyl group formally serves as the directing element for Ir-catalyzed arene C-H bond activation. One-pot generation of a (hydrido)silyl ether from the carbonylcompound or alcohol is followed by dehydrogenative cyclization at 80-100 °C in the presence of norbornene as a hydrogen acceptor
作者:Martyn R. Ashcroft、Peter Bougeard、Adrian Bury、Christopher J. Cooksey、Michael D. Johnson
DOI:10.1016/0022-328x(85)87417-9
日期:1985.7
homolysis of the substrate, abstracts iodine from the toluenesulphonyl iodide to give the toluenesulphonyl radical, which attacks the organic ligand of the cobaloxime, preferably at the terminal olefinic carbon, thereby displacing cobaloxime(II) and giving the observed organic product.
A detailed investigation of the aza-Prins reaction
作者:Adrian P. Dobbs、Sebastien J. J. Guesné、Robert J. Parker、John Skidmore、Richard A. Stephenson、Mike B. Hursthouse
DOI:10.1039/b915797b
日期:——
The development of a Lewis acid-promoted aza-Prins reaction to form piperidines and pyrrolidines is described. Indium trichloride has been found to be a highly successful and mild Lewis acid for promoting this reaction. A thorough mechanistic investigation is described, including the factors that influence the formation of the 5- or 6-membered ring product(s).
Itraconazole Side Chain Analogues: Structure–Activity Relationship Studies for Inhibition of Endothelial Cell Proliferation, Vascular Endothelial Growth Factor Receptor 2 (VEGFR2) Glycosylation, and Hedgehog Signaling
作者:Wei Shi、Benjamin A. Nacev、Blake T. Aftab、Sarah Head、Charles M. Rudin、Jun O. Liu
DOI:10.1021/jm200944b
日期:2011.10.27
analogues against VEGFR2 glycosylation was generally driven by sidechains of at least four carbons in composition with branching at the α or β position. SAR trends for targeting the Hh pathway were divergent from those related to HUVEC proliferation or VEGFR2 glycosylation. These results also suggest that modification of the sec-butyl sidechain can lead to enhancement of the biological activity of itraconazole
Exhaustive Suzuki–Miyaura reactions of polyhalogenated heteroarenes with alkyl boronic pinacol esters
作者:Sébastien Laulhé、J. Miles Blackburn、Jennifer L. Roizen
DOI:10.1039/c7cc00997f
日期:——
A novel Suzuki–Miyaura protocol is described that enables the exhaustive alkylation of polychlorinated pyridines. This method facilitates a formal synthesis of normuscopyridine and the rapid assembly of a dumbbell shaped portion of a [2]rotaxane.