Microwave-assisted cyclizations promoted by polyphosphoric acid esters: a general method for 1-aryl-2-iminoazacycloalkanes
作者:Jimena E Díaz、María C Mollo、Liliana R Orelli
DOI:10.3762/bjoc.12.190
日期:——
omega-arylaminonitriles promoted by polyphosphoricacid (PPA) esters. 1-Aryl-2-iminopyrrolidines were easily prepared from the acyclic precursors employing a chloroformic solution of ethyl polyphosphate (PPE). The use of trimethylsilyl polyphosphate (PPSE) in solvent-free conditions allowed for the synthesis of 1-aryl-2-iminopiperidines and hitherto unreported 1-aryl-2-iminoazepanes. The cyclization reaction involves
This invention is directed to oxoazaheterocycyl compounds which inhibit Factor Xa, to oxoazaheterocycyl compounds which inhibit both Factor Xa and Factor IIa, to pharmaceutical compositions comprising these compounds, to intermediates useful for preparing these compounds, to a method of directly inhibiting Factor Xa and to a method of simultaneously directly inhibiting Factor Xa and Factor IIa..
An Efficient Synthesis of <i>N</i>-Arylputrescines and Cadaverines
作者:Liliana Orelli、Natalia Link、Jimena Díaz
DOI:10.1055/s-0028-1087817
日期:——
We present a two-step, general synthesis of N-arylputrescines and cadaverines, by cesium carbonate mediated alkylation of anilines with Ï-chloronitriles and subsequent reduction. The cesium-mediated alkylation shows remarkable selectivity towards the monoalkylation product. The method is straightforward and leads to satisfactory global yields.
[EN] SUBSTITUTED OXOAZAHETEROCYCLYL FACTOR Xa INHIBITORS<br/>[FR] COMPOSES OXOAZAHETEROCYCLYLE SUBSTITUES INHIBITEURS DU FACTEUR Xa
申请人:AVENTIS PHARMACEUTICALS PRODUCTS INC.
公开号:WO1999037304A1
公开(公告)日:1999-07-29
(EN) This invention is directed to oxoazaheterocyclyl compounds which inhibit factor Xa, to pharmaceutical compositions comprising these compounds, to intermediates useful for preparing these compounds and to a method of inhibiting factor Xa.(FR) L'invention porte sur des composés oxoazahétérocyclyle qui inhibent le facteur Xa, sur des compositions pharmaceutiques comprenant ces composés, sur des intermédiaires utiles dans la préparation de ces composés et sur un procédé d'inhibition du facteur Xa.
importance of polyfunctional amines, C–N bond formation is important in synthetic organic chemistry. Here we present a neutral amination reaction using azides as the nitrogen source and arylboronic acids with a rhodium(I) catalyst to afford alkyl–aryl and aryl–aryl secondary amines. Natural products and pharmaceutical derivatives were applied, and gram-scale reactions were performed, which demonstrated the