89224-76-0Relevant academic research and scientific papers
A process for preparing 1, 2 - dihydro - (4 H) - 3, 1 - benzoxazin -4 - ketone compound method
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Paragraph 0038-0041, (2019/04/14)
The invention discloses a method for utilizing N - methyl - N - aryl anthranilic acid compound synthesis of 1, 2 - dihydro - (4 H) - 3, 1 - benzoxazin - 4 - ketone compounds, the synthetic method is: the palladium salt as a catalyst, the N - methyl - N -
Pd-Catalyzed Intramolecular Chemoselective C(sp2)-H and C(sp3)-H Activation of N-Alkyl- N-arylanthranilic Acids
Hu, Zhe-Yao,Zhang, Yan,Li, Xin-Chang,Zi, Jing,Guo, Xun-Xiang
supporting information, p. 989 - 992 (2019/05/16)
A controllable palladium-catalyzed intramolecular C-H activation of N-alkyl-N-arylanthranilic acids has been developed. The methodology allows selective synthesis of 1,2-dihydro-(4H)-3,1-benzoxazin-4-ones and carbazoles from the same starting materials and palladium catalyst. The selectivity is controlled by the oxidant. Silver oxide promotes C(sp3)-H activation/C-O cyclization to provide 1,2-dihydro-(4H)-3,1-benzoxazin-4-ones, while copper acetate contributes to C(sp2)-H activation/decarboxylative arylation to afford carbazoles. This protocol is demonstrated by its wide substrate scope and good functional group tolerance.
Tetrazolyl- and carboxamidotetrazolyl-substituted 4H-furo[3,2-b] indoles and anti-allergic use thereof
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, (2008/06/13)
Novel tetrazolyl- and carboxamidotetrazolyl-substituted 4H-furo[3,2-b] indoles are useful for treating allergies or for treating or ameliorating postmyocardial infarct tissue damage. Also disclosed are methods for preparing said indoles, pharmaceutical compositions containing said indoles and methods for using said pharmaceutical compositions.
Indole Esters as Heterocyclic Synthons. III . Preparation and Reactions of Furoindoles
Unangst, Paul C.,Carethers, Mary E.
, p. 709 - 714 (2007/10/02)
The preparation of furoindoles via Dieckmann cyclization is described.The precursor diesters were obtained from 3-hydroxy-1H-indole-2-carboxylic acid esters and methyl or ethyl bromoacetate.Reactions of the furoindole enolic esters prepared
