Diastereoselective Diels-Alder Reaction of 2-Thienyl and 2-Furyl Substituted 3-Propenethioamides with Electron Deficient Dienophiles
摘要:
The hetero-Diels-Alder reaction of N-aryl-3-(2-thienyl)-2-propenethioamides with N-phenylmaleimide and maleimide yielded a mixture of endo- and exo-2-arylimino-4-(2-thienyl)tetrahydrothiopyran[2,3-c]pyrroles. Cycloaddition to diethyl fumarate required acylation and furnished a mixture of diastereoisomeric 5-(N-acetylphenylamino)-2,3-bis-(ethoxycarbonyl)-4-(2-thienyl)-3,4-dihydro-2H-thiopyrans. Reactions of 3-(2-furyl)-2-propenethioamides with N-arylmaleimides furnished the correspondent 2-arylimino-4-(2-furyl)tetrahydrothiopyran[2,3-c]pyrroles. In the cycloadditions of the heterodienes with N-arylmaleimides the endo-cycloadducts were formed as the major products.
[EN] PROPENAMIDE THIOPHENE DERIVATIVES AS FLAVIVIRUS INHIBITORS AND THEIR USE<br/>[FR] DÉRIVÉS DE THIOPHÈNE PROPÉNAMIDE UTILISÉS COMME INHIBITEURS DE FLAVIVIRUS ET LEUR UTILISATION
申请人:UNIV D'AIX-MARSEILLE
公开号:WO2017102014A1
公开(公告)日:2017-06-22
The present invention deals with new flavivirus inhibitors, compositions comprising said inhibitors and methods for the treatment of disorders related to a viral infection, such as a disease due to a flavivirus infection, comprising administering said inhibitors.
作者:Saumya Verma、Vikram Singh、Jawahar L. Jat、Bhoopendra Tiwari
DOI:10.1021/acs.joc.3c02478
日期:2024.6.7
The Beckmann reaction is one of the most atom-economical methods for the preparation of amides from ketones. Unlike ketones, the multiple competing reactivities of enones as well as the requirement of demanding reaction conditions for in situ generation of oximes have severely impacted the application of this reaction for the preparation of α,β-unsaturated amides. Herein, we describe the first chemoselective
Cycloacylation of N-phenyl-N′-R-thioureas with 3-aryl-2-propenoyl chlorides
作者:V. N. Britsun、A. N. Esipenko、M. O. Lozinskii
DOI:10.1134/s1070428006110200
日期:2006.11
Cycloalkylation of N-phenyl-N'-R-thiourea with 3-aryl-2-propenoyl chlorides in acetone gives as products 6-aryl-3-phenyl-2-(R-imino)-2,3,5,6-tetrahydro-4H-1,3-thiazin-4-one and their hydrochlorides. The same reaction carried out in acetone in the presence of K2CO3 leads to the formation of 6-aryl-3-phenyl-2-(R-imino)-2,3,5,6-tetrahydro-4H-1,3-thiazin-4-ones, N-(3-aryl-2-propenoyl)-N-phenylthioureas, 3-aryl-2-propenoylanilides, and phenyl isothiocyanate.
Trimethylsilyl azide-promoted acid-amine coupling: A facile one-pot route to amides from carboxylic acids and amines