201486-55-7Relevant articles and documents
Oxidative organocatalytic chemoselective: N -acylation of heterocycles with aromatic and conjugated aldehydes
Ta, Linda,Sundén, Henrik
supporting information, p. 531 - 534 (2018/01/19)
Selective acylation of indoles is cumbersome often involving the need for sensitive and reactive acyl chloride derivatives or coupling reagents. Here we report a mild, functional group tolerant and highly chemoselective oxidative carbene catalyzed N-acylation of indoles with aldehydes. The acylation has a broad substrate scope and is compatible with substituents on both the aldehyde and the indole reaction partner. Furthermore, aza-heterocycles such as pyrrole and indazole can also be used as nucleophiles in this reaction providing the corresponding amide congeners in good yield.
α,β-Unsaturated N-Acylindoles: An Alternative Class of Michael Acceptors and Their Application in Asymmetric Borylation
Jiang, Quanbin,Guo, Tenglong,Gao, Runli,Wang, Quannan,Lou, Jiang,Yu, Zhengkun
, p. 7981 - 7993 (2018/06/04)
Copper(I)-catalyzed enantioselective borylation of α,β-unsaturated N-acylindoles as well as N-acylpyrroles was efficiently achieved by means of bis(pinacolato)diboron (B2pin2), affording the enantioenriched products in excellent yields with up to 99% ee. The present work provides an alternative class of Michael acceptors, that is, α,β-unsaturated N-acylindoles, for potential asymmetric transformations.
One-Pot Michael Addition/Radical Cyclization Reaction of N -Acryloyl Indoles
Irwin, Lauren C.,Kerr, Michael A.
supporting information, p. 2859 - 2864 (2017/09/28)
From N -acryloyl indoles, ten examples of 1,2-annulated indole products were generated in a one-pot procedure via a Michael addition and radical cyclization mediated by Mn(OAc) 3.
Novel imaging agents for β-amyloid plaque based on the N-benzoylindole core
Yang, Yang,Duan, Xin-Hong,Deng, Jun-Yuan,Jin, Bing,Jia, Hong-Mei,Liu, Bo-Li
supporting information; experimental part, p. 5594 - 5597 (2011/10/09)
We report the synthesis and evaluation of a series of N-benzoylindole derivatives as novel potential imaging agents for β-amyloid plaques. In vitro binding studies using Aβ1-40 aggregates versus [ 125I]TZDM showed that all these deri
2-(2-aminophenyl)-acetaldehyde dimethyl acetal: A novel reagent for the protection of carboxylic acids
Arai, Eri,Tokuyama, Hidetoshi,Linsell, Martin S.,Fukuyama, Tohru
, p. 71 - 74 (2007/10/03)
The synthesis and use of 2-(2-aminophenyl)-acetaldehyde dimethyl acetal 1 are described. The amides 2, derived from this amine and carboxylic acids, are stable under basic conditions and thus can be regarded as the protected carboxylic acids. The corresponding carboxylic acids are regenerated by conversion of 2 into indolylamides 3 by treatment with CSA and subsequent hydrolysis with LiOOH or NaOH. In addition, 3 can be easily converted to esters, amides, and aldehydes.