A synthesis of 3-fluoroindoles and 3,3-difluoroindolines by reduction of 3,3-difluoro-2-oxindoles using a borane tetrahydrofuran complex
摘要:
A borane tetrahydrofuran complex has been used to study the reduction of 3,3-difluoro-2-oxindoles and been found to yield either 3-fluoroindoles or 3,3-difluoroindolines. The latter have been found to be reasonably stable when the aromatic nucleus is substituted with an electron withdrawing group and are in these cases the predominant product. The efficient synthesis of the former occurs by elimination of HF in the presence of silica from the latter. The 3,3-difluoro-2-oxindoles were prepared by the reaction of appropriately substituted isatin derivatives with DAST. (C) 1999 Elsevier Science Ltd. All rights reserved.
[EN] N-{[2-(PIPERIDIN-1-YL)PHENYL](PHENYL)METHYL}-2-(3-OXO-3,4-DIHYDRO-2H-1,4-BENZOXA ZIN-7-YL)ACETAMIDE DERIVATIVES AND RELATED COMPOUNDS AS ROR-GAMMA MODULATORS FOR TREATING AUTOIMMUNE DISEASES<br/>[FR] DÉRIVÉS DE N-{[2-(PIPÉRIDIN-1-YL)PHÉNYL](PHÉNYL)MÉTHYL}-2-(3-OXO-3,4-DIHYDRO-2H-1,4-BENZOXA ZIN-7-YL)ACÉTAMIDE ET COMPOSÉS APPARENTÉS UTILISÉS EN TANT QUE MODULATEURS DE ROR-GAMMA POUR LE TRAITEMENT DE MALADIES AUTO-IMMUNES
申请人:GENFIT
公开号:WO2018138362A1
公开(公告)日:2018-08-02
The present invention provides e.g. N-[2-(piperidin-1-yl)phenyl] (phenyl)methyl}-2-(3-oxo-3,4-dihydro-2H-1,4-benzoxazin-7-yl)acetamide derivatives and related compounds as ROR-gamma modulators for treating e.g. autoimmune diseases, autoimmune-related diseases, inflammatory diseases, metabolic diseases, fibrotic diseases or cholestatic diseases, such as e.g. arthitis and asthma.
PDE 10a Inhibitors for the Treatment of Type II Diabetes
申请人:Janssen Pharmaceutica, NV
公开号:US20140364414A1
公开(公告)日:2014-12-11
Disclosed are compounds, compositions and methods for treating Type II diabetes. Such compounds are represented by Formula (I) as follows:
wherein R
1
, R
2
, L, and Q are defined herein.
Herein, we report the denovosynthesis and characterization of a series of substituted bithiophene derivatives as novel and inexpensive organic photocatalysts.
在本文中,我们报道了一系列取代的联噻吩衍生物作为新的和廉价的有机光催化剂的从头合成和表征。
Copper/B<sub>2</sub>pin<sub>2</sub>-catalyzed C–H difluoroacetylation–cycloamidation of anilines leading to the formation of 3,3-difluoro-2-oxindoles
作者:Miaolin Ke、Qiuling Song
DOI:10.1039/c6cc09643c
日期:——
An original and efficient synthesis of 3,3-difluoro-2-oxindole derivatives has been developed via copper/B2pin2-catalyzed difluoroacetylation of aniline via C–H activation followed by intramolecular amidation.
<scp>4‐Dimethylaminopyridine‐Boryl</scp>
Radical Promoted Monodefluorinative Alkylation of 3,
<scp>3‐Difluorooxindoles</scp>
作者:Tesfaye Tebeka Simur、Fentahun Wondu Dagnaw、You‐Jie Yu、Feng‐Lian Zhang、Yi‐Feng Wang
DOI:10.1002/cjoc.202100784
日期:2022.3
A selective monodefluorinative alkylation of 3,3-difluorooxindoles is achieved. The reaction starts by the attack of a 4-dimethylaminopyrine-boryl radical to the carbonyloxygen atom of 3,3-difluorooxindoles, followed by a spin-center shift to generate radical intermediates with the elimination of a fluoride anion. The subsequent radical addition to alkenes affords a range of 3-alkyl-fluorooxindoles