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
Fluoride ion mediated peterson alkenation of bis(trimethylsilyl)methylimines: a novel synthesis of 2-aza-1,3-dienes and N-vinyl-β-lactams
作者:Juan Lasarte、Claudio Palomo、Jean P. Picard、Jacques Dunogues、Jesús M. Aizpurua
DOI:10.1039/c39890000072
日期:——
The formation of bis(trimethylsily)methylimines and their transformation into aza-1,3-dienes by means of a fluoride-induced catalytic Peterson alkenation is reported; when the procedure was applied to N-[bis(trimethylsilyl)methyl]-azetidin-2-ones, a wide range of N-vinyl derivatives were obtained in high yields.
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.
LASARTE, JUAN;PALOMO, CLAUDIO;PICARD, JEAN P.;DUNOGUES, JACQUES;AIZPURUA,+, J. CHEM. SOC. CHEM. COMMUN.,(1989) N, C. 72-74
作者:LASARTE, JUAN、PALOMO, CLAUDIO、PICARD, JEAN P.、DUNOGUES, JACQUES、AIZPURUA,+
DOI:——
日期:——
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.