Molybdenum(0)-Promoted Carbonylative Cyclization of<i>o</i>-Haloaryl- and β-Haloalkenylimine Derivatives by Oxidative Addition of a Carbon(sp<sup>2</sup>)Halogen Bond: Preparation of Two Types of γ-Lactams
作者:Jun Takaya、Kenichiro Sangu、Nobuharu Iwasawa
DOI:10.1002/anie.200902884
日期:2009.9.7
Lovely lactams: Synthetically useful γ‐lactam derivatives have been prepared through the unique title transformation. By utilizing the characteristic property of the molybdenum complex, two kinds of products (both of which have rarely been obtained by reactions catalyzed by late transition metals) were obtained selectively by adjusting the reaction conditions (see scheme).
Synthesis of Isoquinolines and Pyridines by the Palladium/Copper-Catalyzed Coupling and Cyclization of Terminal Acetylenes and Unsaturated Imines: The Total Synthesis of Decumbenine B
作者:Kevin R. Roesch、Richard C. Larock
DOI:10.1021/jo010579z
日期:2002.1.1
have been developed. However, aryl-, vinylic-, and alkyl-substituted acetylenes undergo palladium-catalyzed coupling and subsequent copper-catalyzed cyclization in excellent yields. The totalsynthesis of the isoquinoline natural product decumbenine B has been accomplished in seven steps and 20% overall yield by employing this palladium-catalyzed coupling and cyclization methodology.
Efficient copper(I)-catalyzed, microwave-assisted, one-pot synthesis of 3,4-diaryl isoquinolines
作者:Zhang Hu、Li-Li Ou、Si-Dong Li、Lei Yang
DOI:10.1007/s11164-013-1462-z
日期:2015.6
An efficient copper-catalyzed, microwave-assisted, one-pot reaction has been developed for synthesis of 3,4-diaryl isoquinolines. The reaction was performed in two steps via a CuI/2,2′-biimidazole-catalyzed tandem process from N-tert-butyl-o-iodobenzaldimine and a terminal aryl alkyne, followed by addition of an aryl iodide. A variety of 3,4-diaryl isoquinolines have been obtained in moderate to good
New Strategy for the Synthesis of Tetrahydroisoquinoline Alkaloids
作者:Philip Magnus、Kenneth S. Matthews、Vince Lynch
DOI:10.1021/ol034683+
日期:2003.6.1
[reaction: see text] A general strategy for the formation of 1,3-cis-substituted tetrahydroisoquinolines is described from ortho-iodo imines involving Larock isoquinoline synthesis, addition of organolithium compounds to unactivated isoquinolines, and ionic hydrogenation. In addition, a newsynthesis of lactams via an unprecedented azide cyclization in the presence of a sulfonium ion is described.
Palladium-catalyzed annulation of internal alkynes in aqueous medium
作者:Wei Jie Ang、Chih-Hsuan Tai、Lee-Chiang Lo、Yulin Lam
DOI:10.1039/c3ra46010j
日期:——
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 carbo- and heteroannulation of internal alkynes with functionalized aryl halides in aqueous medium. A uniform reaction condition for these annulation reactions was also developed.