One-pot diastereoselective synthesis of tetrahydroepimino-benzo[b]azocines through sequential [3+2]-cycloaddition and Staudinger-aza-Wittig reactions
作者:Xiaoming Ma、Xiaofeng Zhang、Guoshu Xie、John Mark Awad、Wei Zhang
DOI:10.1016/j.tetlet.2019.151127
日期:2019.10
The one-potsynthesis of tetrahydro-epiminobenzo[b]azocines through a sequential 1,3-dipolarcycloaddition and intramolecular Staudinger-aza-Wittig reaction sequence is reported. This methodology provides a new and efficient approach for medium-sized and bridged nitrogen heterocyclic molecules.
据报道,通过连续的1,3-偶极环加成反应和分子内Staudinger-aza-Wittig反应序列,一锅合成四氢-表氨基苯并[ b ]偶氮星。该方法为中型和桥接氮杂环分子提供了一种新的有效方法。
SNAr azidation of phenolic functions utilizing diphenyl phosphorazidate
A useful method for the synthesis of aryl azides via SNAr reaction of phenol derivatives using diphenyl phosphorazidate (DPPA) as an azidationreagent was developed. Various phenol derivatives bearing electron-withdrawing groups were converted into the corresponding aryl azides in a single step. This method is easy to perform and enables the preparation of aryl azides without the use of explosive azide
[EN] SUBSTITUTED BICYCLIC COMPOUNDS AS MODULATORS OF THE ARYL HYDROCARBON RECEPTOR (AHR)<br/>[FR] COMPOSÉS BICYCLIQUES SUBSTITUÉS EN TANT QUE MODULATEURS DU RÉCEPTEUR D'HYDROCARBURES ARYLE (AHR)
申请人:PHENEX PHARMACEUTICALS AG
公开号:WO2020021024A1
公开(公告)日:2020-01-30
The present invention relates to bicyclic compounds which can act as aryl hydrocarbon receptor (AhR) modulators and, in particular, as AhR antagonists. The invention further relates to the use of the compounds for the treatment and/or prophylaxis of diseases and/or conditions through binding of said aryl hydrocarbon receptor by said compounds. A-B-L-C (I)
Lewis Acid Promoted Oxonium Ion Driven Carboamination of Alkynes for the Synthesis of 4-Alkoxy Quinolines
作者:Santosh J. Gharpure、Santosh K. Nanda、Priyanka A. Adate、Yogesh G. Shelke
DOI:10.1021/acs.joc.6b02896
日期:2017.2.17
Lewis acid mediated multisegment coupling cascade is designed for the synthesis of densely substituted 4-alkoxy quinolines via an oxonium ion triggered alkyne carboamination sequence involving C–C and C–N bond formations. Cyclic ether fused-quinolines could also be accessed using this fast, operationally simple, high yielding, chemoselective and functional group tolerant method. Versatility and utility
v-Triazolines. Part 37. Rearrangement reactions of 5-amino-1-(2-formyl-, -benzoyl-, -cyano-aryl)-ν-triazolines: new synthesis of 2-amino- and 2,4-diamino-quinolines and 2,4-diamino-1,7-naphthyridines
作者:Egle M. Beccalli、Emanuela Erba、Maria Luisa Gelmi、Donato Pocar
DOI:10.1039/p19960001359
日期:——
2-Aminoquinolines 4 were obtained in an one-pot reaction from arylacetaldehydes 1, secondary amines 2 and aryl azides 3 in refluxing benzene or xylene. 2,4-Diaminoquinolines and 2,4-diamino-l,7-naphthyridines 9 were prepared by heating arylacetaldehydes 1 with secondary amines 2 and aryl or pyridyl azides 8 and reaction with bases. Reaction intermediates were shown in certain cases to be 5-amino-ν-triazolines