Verfahren zur Herstellung von Fluor enthaltenden Phenethylaminen sowie Fluor enthaltende Beta-Iminovinyl- und Beta-Iminoethylbenzole
申请人:Bayer Aktiengesellschaft
公开号:EP1013637A2
公开(公告)日:2000-06-28
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Fluor enthaltenden Phenethylaminen, das dadurch gekennzeichnet ist, daß man in einer ersten Stufe ein substituiertes Brombenzol mit einem N-Vinylimid in Gegenwart eines Palladiumkatalysators umsetzt, in einer zweiten Stufe das erhaltene substituierte β-Iminovinylbenzol katalytisch hydriert und in einer dritten Stufe das in der zweiten Stufe erhaltene substituierte β-Iminoethylbenzol spaltet. Mit diesem Verfahren werden auch neue β-Iminovinyl- und β-Iminoethylbenzole zugänglich.
Fluorous Oxime Palladacycle: A Precatalyst for Carbon–Carbon Coupling Reactions in Aqueous and Organic Medium
作者:Woen Susanto、Chi-Yuan Chu、Wei Jie Ang、Tzyy-Chao Chou、Lee-Chiang Lo、Yulin Lam
DOI:10.1021/jo202482h
日期:2012.3.16
To facilitate precatalyst recovery and reuse, we have developed a fluorous, oxime-based palladacycle 1 and demonstrated that it is a very efficient and versatile precatalyst for a wide range of carbon carbon bond formation reactions (Suzuki-Miyaura, Sonogashira, Stille, Heck, Glaser-type, and Kumada) in either aqueous or organic medium under microwave irradiation. Palladacycle 1 could be recovered through F-SPE in various coupling reactions with recovery ranging from 84 to 95% for the first cycle. Inductively coupled plasma optical emission spectrometry (ICP-OES) analyses of the Pd content in the crude product from each class of transformation indicated extremely low levels of leaching and the palladacycle could be reused four to five times without significant loss of activity.
US6232475B1
申请人:——
公开号:US6232475B1
公开(公告)日:2001-05-15
Synthesis of Aminocyclobutanes by Iron-Catalyzed [2+2] Cycloaddition
作者:Florian de Nanteuil、Jérôme Waser
DOI:10.1002/anie.201303803
日期:2013.8.19
Fab Four: An iron‐catalyzed [2+2] cycloaddition furnishes aminocyclobutanes with a broad range of substituents in excellent yields and diastereoselectivities. The products can be obtained on a gram scale and can be further converted to β‐peptide derivatives in a few steps. Furthermore, a [4+2] cycloaddition between an aminocyclobutane and an olefin leads to the corresponding cyclohexylamines.
Regioselective Heck Reaction of<i>N</i>-Vinylphthalimide: A General Strategy for the Synthesis of (<i>E</i>)-<i>N-</i>Styrylphthalimides and Phenethylamines
作者:Emilio Alacid、Carmen Nájera
DOI:10.1002/adsc.200800074
日期:2008.6.9
phenone oxime-derived palladacycles as catalysts under phosphine-free conditions. The reaction is succesfully carried out in organic solvents, such as DMF, in the presence of an organic base, such as dicyclohexylmethylamine, and with TBAB as additive at 120 °C under conventional or microwave heating. (E)-N-Styrylphthalimides are mainly obtained using a rather low palladium loading (0.05–1 mol%). Similar