Efficient and Benign One-Pot Conversion of N-Tosyl-1,4,5,6-tetrahydropyrimidines to Pyrimidines via Tandem β-Elimination and Aromatization
摘要:
An efficient, mild, benign, and practical method for one-pot conversion of N-tosyl-1,4,5,6-tetrahydropyrimidines into pyrimidines is discussed in detail. In this method, N-tosyl-1,4,5,6-tetrahydropyrimidines are first prepared via N-tosylation of tetrahydropyrimidines with TsCl and then treated with 1.5 equivalents of NaOH in dimethylsulfoxide (DMSO) under air at 60 degrees C to afford corresponding pyrimidines in 70-95% yields via cascade -elimination and aromatization. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) for the following free supplemental resources: Full experimental and spectral details.]
[EN] INHIBITORS OF INFLUENZA VIRUS REPLICATION AND USES THEREOF<br/>[FR] INHIBITEURS DE RÉPLICATION DU VIRUS DE LA GRIPPE ET UTILISATIONS ASSOCIÉES
申请人:SUNSHINE LAKE PHARMA CO LTD
公开号:WO2018108125A1
公开(公告)日:2018-06-21
The invention provides a class of compounds as inhibitors of influenza virus replication, preparation methods thereof, pharmaceutical compositions containing these compounds, and uses of these compounds and pharmaceutical compositions thereof in the treatment of influenza.
Palladium(0)-Catalyzed, Copper(I)-Mediated Coupling of Cyclic Thioamides with Alkenylboronic Acids, Organostannanes, and Siloxanes
作者:Nuzhat Arshad、Jamshed Hashim、C. Oliver Kappe
DOI:10.1021/jo900848s
日期:2009.7.17
The Pd-catalyzed cross-coupling of cyclic thioamides and thioureas with alkenylboronic acids, vinyl- and (het)arylstannanes, and arylsiloxanes in the presence of stoichiometric amounts of a Cu(I) cofactor is described. The desulfitative C−C cross-coupling protocol of the Liebeskind−Srogl type is performed under neutral conditions and can be applied to a range of heterocyclic structures with embedded
[EN] INHIBITORS OF INFLUENZA VIRUS REPLICATION, APPLICATION METHODS AND USES THEREOF<br/>[FR] INHIBITEURS DE RÉPLICATION DU VIRUS DE LA GRIPPE, PROCÉDÉS D'APPLICATION ET UTILISATIONS ASSOCIÉES
申请人:SUNSHINE LAKE PHARMA CO LTD
公开号:WO2018033082A1
公开(公告)日:2018-02-22
A class of compounds as inhibitors of influenza virus replication, preparation methods thereof, pharmaceutical compositions containing these compounds, and uses of these compounds and pharmaceutical compositions thereof in the treatment of influenza.
[EN] CF3O-containing enaminoketones and their utilization for the preparation of CF3O-containing pyrazoles<br/>[FR] ÉNAMINOCÉTONES CONTENANT CF3O ET LEUR UTILISATION POUR LA PRÉPARATION DE PYRAZOLES CONTENANT CF3O
申请人:BAYER IP GMBH
公开号:WO2013120876A1
公开(公告)日:2013-08-22
The present invention pertains to novel enaminoketones containing a CF3O-group, novel pyrazole-derivatives containing a CF3O group as well as to a novel process for their preparation comprising aminoformylation of CF30-ketones and cyclization of the obtained CF30-enaminoketones with hydrazines to trifluoromethoxy pyrazoles.
CF3O-containing enaminoketones and their utilization for the preparation of CF3O-containing pyrazoles
申请人:Bayer CropScience AG
公开号:EP2628722A1
公开(公告)日:2013-08-21
The present invention pertains to novel enaminoketones containing a CF3O-group, novel pyrazole-derivatives containing a CF3O group as well as to a novel process for their preparation comprising aminoformylation of CF3O-ketones and cyclization of the obtained CF3O-enaminoketones with hydrazines to trifluoromethoxy pyrazoles.