在Pd(OAc)存在的情况下,将2,2'-联噻吩和3,3'-dicyano-2,2'-联噻吩在5-和5'-位置直接与芳基溴进行二芳基化,并伴随CH键断裂2和使用Cs 2 CO 3为碱的庞大的膦配体。在以(2,2'-联噻吩-5-基)二苯基甲醇为底物的反应中,通过CC键裂解在5-位发生的单芳基化反应选择性产生了5-芳基-2,2'-联噻吩和随后的用不同的芳基溴进行芳基化得到相应的不对称的5,5'-二芳基化产物。
Palladium‐Catalysed Direct Monoarylation of Bithiophenyl Derivatives or Bis(thiophen‐2‐yl)methanone with Aryl Bromides
作者:Karima Si Larbi、Safia Djebbar、Henri Doucet
DOI:10.1002/ejic.201100294
日期:2011.8
Arylated bithiophenes, which are useful compounds due to their coordination and/or physical properties, can be easily prepared by palladium-catalysed C–H bond activation of heteroaromatics followed by arylation using electron-deficient aryl bromides. A variety of 5-arylated 2,2′-bithiophenyl derivatives have been prepared. Good yields were generally obtained by using the air-stable [PdCl(dppb)(C3H5)]
Oxidative addition of heteroaromatic halides to Negishi reagent and subsequent cross-coupling reactions
作者:Caleb F. Harris、Deepak Ravindranathan、Shouquan Huo
DOI:10.1016/j.tetlet.2012.07.105
日期:2012.10
Heteroarylzirconocene halides were prepared via the oxidative addition of heteroarylhalides to the Negishi reagent ‘Cp2ZrBu2’. The palladium-catalyzed cross-coupling of the in situ generated organozirconium reagents with functionalized aryl and heteroarylhalides proceeded smoothly in the presence of CuCl to produce the cross-coupling products in high yields.
Novel bichalcophenes and their prodrugs as antiprotozoal agents
申请人:Tidwell R. Richard
公开号:US20060293540A1
公开(公告)日:2006-12-28
Novel dicationic bichalcophene compounds are described. The presently disclosed novel dicationic bichalcophene compounds exhibit in vitro activity versus
Trypanosoma brucei rhodesiense, Plasmodium falciparum
, or
Leishmania donovani
comparable to that of pentamidine and furamidine. Some of the novel dicationic bichalcophene compounds displayed good activity in vivo in a murine model of a
Trypanosoma brucei rhodesiense
infection.
Dicationic compounds which selectively recognize G-quadruplex DNA
申请人:UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
公开号:EP1792613A2
公开(公告)日:2007-06-06
Dicationic compounds that are highly selective for binding G-quadruplex DNA are described. Several compounds exhibit groove binding toward G-quadruplex DNA and in vitro and in vivo activity versus Trypanosoma brucei rhodesiense. The compounds represent novel drugs for the treatment of cancer, malaria, leishmania, and trypanosomiasis.
介绍了对结合 G 型四叠体 DNA 具有高度选择性的双阳离子化合物。有几种化合物表现出与 G 型四叠体 DNA 的沟结合,以及对布氏锥虫的体外和体内活性。这些化合物是治疗癌症、疟疾、利什曼病和锥虫病的新型药物。
5,5'-bis-(4-amidinophenyl)-2,2'-bifuran derivatives and related compounds as antiprotozoal agent and prodrugs thereof
申请人:The University of North Carolina at Chapel Hill