A Highly Selective Tandem Cross-Coupling of <i>gem</i>-Dihaloolefins for a Modular, Efficient Synthesis of Highly Functionalized Indoles
作者:Yuan-Qing Fang、Mark Lautens
DOI:10.1021/jo701987r
日期:2008.1.1
A highly efficient method of indole synthesis using gem-dihalovinylaniline substrates and an organoboron reagent was developed via a Pd-catalyzed tandem intramolecularamination and an intermolecular Suzuki coupling. Aryl, alkenyl, and alkyl boron reagents are all successfully employed, making for a versatile modular approach. The reaction tolerates a variety of substitution patterns on the aniline
A new tandem coupling approach to synthesize 2-alkynyl indoles and benzofurans is described. This reaction utilizes easily accessible gem-dibromovinyl substrates and terminal alkynes and proceeds via Pd/C- and CuI-catalyzed tandem Ullman/Sonogashira couplings.
Tandem Pd-Catalyzed Double C−C Bond Formation: Effect of Water
作者:David I. Chai、Mark Lautens
DOI:10.1021/jo900053b
日期:2009.4.17
A highly efficient water-accelerated palladium-catalyzed reaction of gem-dibromoolefins with a boronicacid via a tandem Suzuki−Miyaura coupling and direct arylation is reported. A wide range of aryl, alkenyl, and alkyl boronicacids, as well as a variety of substitution patterns on the phenyl ring, are tolerated. Additionally, mechanistic studies were conducted to ascertain the order of the couplings
Synthesis of 3-aryl-2-aminoquinolines: palladium-catalyzed cascade reactions of gem-dibromovinylanilines with tert-butyl isocyanide and arylboronic acids
作者:Langxi Hu、Weijun Gui、Zichen Liu、Baishan Jiang
DOI:10.1039/c4ra05670a
日期:——
A three-component cascade reactioninvolving gem-dibromovinylanilines, tert-butyl isocyanide and arylboronic acids for the efficient synthesis of 3-aryl-2-aminoquinolines has been developed. The reaction proceeds throughpalladium-catalyzedisocyanideinsertion, intramolecular cyclization of gem-dibromovinylanilines followed by Suzuki coupling with arylboronic acids, and the corresponding products
Facile synthesis of 2-amino-3-bromoquinolines by palladium-catalyzed isocyanide insertion and cyclization of gem-dibromovinylanilines
作者:Baishan Jiang、Langxi Hu、Weijun Gui
DOI:10.1039/c4ra00821a
日期:——
A novel and efficient synthesis of 2-amino-3-bromoquinolines through palladium-catalyzed isocyanide insertion followed by intramolecular cyclization of gem-dibromovinylanilines was developed.