作者:Liam T. Ball、Guy C. Lloyd-Jones、Christopher A. Russell
DOI:10.1126/science.1225709
日期:2012.9.28
Gently Coupled Linked aryl rings are found in a broad range of commercial chemical products. Currently, the most versatile synthetic route to this motif involves cross-coupling of one ring with a halide substituent to another ring with a boron or metal-based substituent. Recent research has focused on eliminating the need for one or both of these activating substituents, but for the most part, the
Gold-Catalyzed Oxidative Coupling of Arylsilanes and Arenes: Origin of Selectivity and Improved Precatalyst
作者:Liam T. Ball、Guy C. Lloyd-Jones、Christopher A. Russell
DOI:10.1021/ja408712e
日期:2014.1.8
substitution of the arylsilane and the arene by Au(III) precedes product-forming reductive elimination and subsequent cycle-closing reoxidation of the metal. Despite the fundamental mechanistic similarities between the two auration events, high selectivity is observed for heterocoupling (C-Si then C-H auration) over homocoupling of either the arylsilane or the arene (C-Si then C-Si, or C-H then C-H auration);
Selective Suzuki-Miyaura Monocouplings with Symmetrical Dibromoarenes and Aryl Ditriflates for the One-Pot Synthesis of Unsymmetrical Triaryls
作者:Corinne Minard、Carole Palacio、Kevin Cariou、Robert H. Dodd
DOI:10.1002/ejoc.201400090
日期:2014.5
parameters that would permit selectiveSuzuki–Miyauramonocouplings of symmetrical dihaloarenes were studied. High selectivity and efficiency can be obtained for a broad range of substrates by using operationally simple conditions and widely available reagents. The 38 different examples described provide a valuable toolbox for the rapid access to unsymmetricaltriaryls, as illustrated by the preparation
INDUCING LAYER MATERIALS FOR WEAK EPITAXIAL FILMS OF NON-PLANAR METAL PHTHALOCYANINE
申请人:YAN Donghang
公开号:US20110152541A1
公开(公告)日:2011-06-23
The present invention relates to inducing layer materials for the preparation of weak epitaxial films of non-planar metal phthalocyanine. The characteristics of the inducing layer materials lies in that the said inducing layer materials replace benzene rings of sexiphenyl by conjugated aromatic group and to replace the hydrogen atoms of benzene rings at the two ends of sexiphenyl by fluorine atoms, thus the regulation of molecular interaction is finally realized by changing the size or the linearity degree of the conjugated aromatic groups, as well as by changing the polarity of the benzene ring at the two ends, consequently, the cell parameters of (
001
) crystal face of the new materials are different from that of sexiphenyl and to achieve a effect of inducing the weak epitaxy growth of non-planar metal-phthalocyanine.