Catalytic Synthesis of Substituted Indoles and Quinolines from the Dehydrative C–H Coupling of Arylamines with 1,2- and 1,3-Diols
作者:Hanbin Lee、Chae S. Yi
DOI:10.1021/acs.organomet.6b00273
日期:2016.6.13
The cationic ruthenium-hydride complex catalyzes the dehydrative C-H coupling reaction of arylamines with 1,2-diols to form the indole products. The analogous coupling of arylamines with 1,3-diols afforded the substituted, quinolines. The catalytic method directly forms these coupling products in a highly regioselective manner without generating any toxic byprodficts.
Convenient indole synthesis from ethynylanilines with a polymer-supported fluoride
The cyclization reaction of ethynylanilines having phenyl, alkyl, methoxy, cyano. chloro, mid ethoxycarbonyl groups with (polystyrylmethyl)trimethylammonium fluoride in dry MeCN under an argon atmosphere at 100degreesC proceeded in good yields to give the corresponding indoles without affecting these functional groups. Moreover, the polymer-Supported fluoride could be reused for the cyclization reaction when the deprotection reaction of the N-substituted indole with the fluoride ion 011 resin did not occur under the cyclization conditions. (C) 2002 Elsevier Science Ltd. All rights reserved.
A Novel Indole Synthesis via Conjugate Addition of Pyrrolidine to o-Nitrophenylacetylenes
An Annulative Approach to Highly Substituted Indoles: Unusual Effect of Phenolic Additives on the Success of the Arylation of Ketone Enolates
作者:Jennifer L. Rutherford、Matthew P. Rainka、Stephen L. Buchwald
DOI:10.1021/ja0288993
日期:2002.12.1
novel palladium-catalyzed arylation of ketone enolates with o-nitrohaloarenes was achieved through the addition of phenol additives. The mild reaction conditions employed allowed for the inclusion of a wide variety of functional groups in both substrates to be tolerated. The products of this reaction were then readily reductively cyclized to give highly substituted indoles in moderate to excellent overall
quater‐heteroaryls have been prepared under indium catalysis by nucleophilicaromaticsubstitution (SNAr). This is the first example of catalytic heteroaryl–heteroaryl bond formation based on SNAr between two heteroaryl substrates without needing activating groups to enhance their reactivity (see scheme; El=electrophile, In=In(OTf)3 or In(ONf)3, Nu=nucleophile).
独特的性能:在铟催化下,通过亲核芳族取代(S N Ar)制备了二,三和四杂杂芳基。这是基于两个杂芳基底物之间基于S N Ar的催化杂芳基-杂芳基键催化形成的第一个示例,无需活化基团来增强其反应性(参见方案; El =亲电子试剂,In = In(OTf)3或In(ONf)3,Nu =亲核试剂)。