在这项工作中,我们报告了通过在DMAP作为催化剂存在下,将Boc 2 O与易于制备的3-氨基一起搅拌,简单地搅拌Boc 2 O即可获得高度官能化的咪唑并[1,2- a:5,4- b' ]二吡啶的多米诺反应-2-(乙烯基)咪唑并[1,2- a ]吡啶。该方法使得能够合成高度官能化的咪唑并二吡啶。事实证明,该工艺可与多种基材兼容。该方法的合成潜力通过对4-苯基咪唑基-联吡啶-2-醇衍生物进行Suzuki-Miyaura偶联来说明。筛选新产生的化合物的生物活性导致鉴定出新的命中。化合物7 l 在亚微摩尔范围内对人结肠癌细胞系具有良好的抗增殖活性。
system was found to promote the Csp2–N bond-forming reaction utilizing N-tosylhydrazones and N-H azoles. This process shows functional group tolerance; di-, tri-, and tetrasubstituted N-vinylazoles were obtained in high yields. Under the optimized conditions, the reaction proceeds with high stereoselectivity depending on the nature of the coupling partners.
allowing a Csp 3-N bond formation through coupling of pyridotriazoles and weakly nucleophilicanilines has been developed. This sustainable reaction shows high tolerance towards functional groups (ketones, free alcohols) leading to 2-picolylamines derivatives. The key to our success is the use of a catalytic amount of TBAB and water as a co-solvent leading to the formation of pyridyl-alkylamines derivatives
A general synthesis of arylindoles and (1-arylvinyl)carbazoles via a one-pot reaction from N-tosylhydrazones and 2-nitro-haloarenes and their potential application to colon cancer
A synthesis of aryl-indoles, and carbazoles from a one-pot sequence involving the coupling of hydrazones with nitro-haloarenes has been developed.
已开发了一种从酰肼与硝基卤代芳烃偶联的一锅法序列中合成芳基吲哚和咔唑。
Palladium-Catalyzed One-Pot Reaction of Hydrazones, Dihaloarenes, and Organoboron Reagents: Synthesis and Cytotoxic Activity of 1,1-Diarylethylene Derivatives
products in high yields, offers an expansive substratescope, and can address a broad range of aryl, styrene, vinyl, and heterocyclic olefinic targets. The scope of this one-potcoupling has been also extended to the synthesis of the 1,1-diarylethylene skeleton of the natural product ratanhine. The new compounds were evaluated for their cytotoxic activity, and this allowed the identification of compound
A divergent and efficient one-pot sequence allowing direct access to 3-arylbenzofuran derivatives has been developed. The process, involving N-tosylhydrazones and bromophenols, proceeds via a palladium-catalyzed Barluenga–Valdés cross-coupling, followed by an aerobic, copper-catalyzed, radical cyclization to form Csp2–Csp2 and O–Csp2 bonds. 3-Arylated benzofurans bearing various substituents were obtained