2010
DOI: 10.1021/ja107159b
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Regioselective Oxidative Arylation of Indoles Bearing N-Alkyl Protecting Groups: Dual C−H Functionalization via a Concerted Metalation−Deprotonation Mechanism

Abstract: The most direct method for synthesizing 2-arylindoles is the oxidative coupling of an arene with an indole. We have shown that both the activity and regioselectivity of these cross-coupling reactions are correlated to the acidity of the medium. This insight has been applied to predict the best conditions for the oxidative cross-coupling of N-alkylindoles, an important class of substrates that was heretofore incompatible with the harsh conditions required for oxidative cross-coupling. Both experimental and comp… Show more

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Cited by 283 publications
(93 citation statements)
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References 24 publications
(43 reference statements)
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“…Another reason to investigate in metal catalyzed H-D exchange reactions is the fact that deuterated compounds are of immense importance for kinetic studies of organic reactions. 53,54 Hence, their efficient synthesis is also important. Ru 3 (CO) 12 was reported to be able to undergo C-H insertion in a series of C-H bonds, mainly of aliphatic systems.…”
Section: Ruthenium Catalyzed Hydrogen-deuterium Exchange Of Aliphaticmentioning
confidence: 99%
“…Another reason to investigate in metal catalyzed H-D exchange reactions is the fact that deuterated compounds are of immense importance for kinetic studies of organic reactions. 53,54 Hence, their efficient synthesis is also important. Ru 3 (CO) 12 was reported to be able to undergo C-H insertion in a series of C-H bonds, mainly of aliphatic systems.…”
Section: Ruthenium Catalyzed Hydrogen-deuterium Exchange Of Aliphaticmentioning
confidence: 99%
“…Outra evidência deste mecanismo é o aumento da eficiência reacional na presença de quantidades subestequiométricas de carboxilatos (pivalatos, acetatos, ácidos orgânicos, etc). 17,18 DeBoef e colaboradores 32 consideraram este mecanismo apenas outra forma de nomear a metátese de ligação σ, também racionalizado e demonstrado por Hull e Sanford. 33 Outros grupos de pesquisa, embora ainda trabalhem com a hipótese de substituição aromática eletrofílica, admitem também que o mecanismo CMD pode ocorrer.…”
Section: Esquema 7 Cicloaromatização De Alcinos Com Duas Ativações Dunclassified
“…3,4 Popular approaches to these heterocycles include N-modification of 2-substituted NH indoles, 5-7 2-arylation of N-substituted indoles, [8][9][10] coupling/annulation of o-haloanilines with alkynes, [11][12][13] and intramolecular cyclization of o-(gem-dihalovinyl)anilines. [14][15][16] Several one-pot synthetic protocols have also been developed recently.…”
Section: Introductionmentioning
confidence: 99%