Palladium-catalyzed ortho-acylation of 2-aryl pyridine derivatives using arylmethyl amines as new acyl sources
作者:Qian Zhang、Fan Yang、Yangjie Wu
DOI:10.1039/c3cc42106f
日期:——
A facile and efficient protocol for palladium-catalyzed ortho-acylation of 2-aryl pyridines was developed. Note that this acylation utilized arylmethyl amines as new, cheap and readily available acylation reagents and exhibited high regioselectivity for 2-aryl pyridines bearing a meta-substituent in the aryl ring moiety.
Borane-Catalyzed Reduction of Pyridines via a Hydroboration/Hydrogenation Cascade
作者:Zhao-Ying Yang、Heng Luo、Ming Zhang、Xiao-Chen Wang
DOI:10.1021/acscatal.1c02876
日期:2021.9.3
of pyridines. The method was particularly effective for 2,3-disubstitutedpyridines, which generated piperidines in high yields with high cis selectivity. Mechanistic studies indicated that the pyridine substrates and the piperidine products sequentially acted as bases in cooperation with B(C6F5)3 to split H2. The broad functional group tolerance of the method allowed its use for the synthesis of some
我们已经开发了一种用于 B(C 6 F 5 ) 3催化的吡啶的硼氢化/氢化级联还原的方法。该方法对 2,3-二取代吡啶特别有效,它以高产率和高顺式选择性生成哌啶。机理研究表明,吡啶底物和哌啶产物依次作为碱基与B(C 6 F 5 ) 3合作分裂H 2。该方法的广泛官能团耐受性使其可用于合成一些生物活性分子。
ANTHRACENE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT USING THE SAME
申请人:JNC CORPORATION
公开号:US20150014671A1
公开(公告)日:2015-01-15
This organic electroluminescent element is manufactured by using an anthracene derivative having a pyridyl aryl group substituted with an alkyl represented by formula (1) as an electron transport material, and satisfies characteristics such as the following in an adequate and well-balanced manner: improves the external quantum efficiency of the light-emitting element, which is generally required by the electron transport material; reduces the drive voltage of the light-emitting element; and increases the life of the element. (In formula (1), Ar is a divalent or trivalent benzene or naphthalene; R is hydrogen or an alkyl with a carbon number of 1 to 6, but all of the Rs never simultaneously form hydrogen; and R
1
to R
4
are, individually, hydrogen, an alkyl with a carbon number of 1 to 6, a cycloalkyl with a carbon number of 3 to 6, or an aryl with a carbon number of 6 to 20.)
Palladium catalyzed ortho-C–H-benzoxylation of 2-arylpyridines using iodobenzene dibenzoates
作者:Qian Zhang、Ying Wang、Tingting Yang、Li Li、Dong Li
DOI:10.1016/j.tetlet.2015.09.097
日期:2015.10
A palladium-catalyzed ortho-C-H-benzoxylation of 2-arylpyridines using iodobenzene dibenzoates has been developed. The reaction employed the stable and easily accessible hypervalent iodine reagents as both benzoxylate source and oxidant which made the protocol simple and facile. It showed high regioselectivity and good functional group tolerance, and gave the mono-benzoxylation products in moderate to excellent yields. (C) 2015 Elsevier Ltd. All rights reserved.
COMPOUNDS FOR THE TREATMENT OF INFLAMMATORY DISORDERS
申请人:Kozlowski Joseph A.
公开号:US20120010181A1
公开(公告)日:2012-01-12
This invention relates to compounds of the Formula (I): (Chemical formula should be inserted here as it appears on abstract in paper form) (I) or a pharmaceutically acceptable salt, solvate or isomer thereof, which can be useful for the treatment of diseases or conditions mediated by MMPs, ADAMs, TACE, aggrecanase, TNF—or combinations thereof.