首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Simple construction of fused and spiro nitrogen/sulfur containing heterocycles by addition of thioamides or thioureas on cycloalkenyl-diazenes: examples of click chemistry
Authors:Orazio A Attanasi  Gianfranco Favi  Gianluca Giorgi  Francesca R Perrulli
Institution:a Istituto di Chimica Organica, Università degli Studi di Urbino ‘Carlo Bo’, Via I Maggetti 24, 61029 Urbino, Italy
b Dipartimento di Chimica, Università degli Studi di Siena, Via Aldo Moro, 53100 Siena, Italy
c Dipartimento di Chimica Organica ‘A. Mangini’, Università di Bologna, Via San Giacomo 11, 40126 Bologna, Italy
Abstract:New 1-cycloalkenyl-1-diazenes have been obtained in good yields from cyclic β-ketoesters and hydrazine derivatives. They furnished new cycloalkyld]1,3]thiazolines with thioamides or new spirocycloalkyl-thiazolinones with thioureas. Moreover they gave, with imidazolidine-2-thione and tetrahydropyrimidine-2-thione, new and interesting spirocycloalkyl-1,2′-imidazo2,1-b]1,3]thiazole] or spirocycloalkyl-1,2′-1,3]thiazolo3,2-a]pyrimidine] derivatives, respectively. Cycloalkyld]1,3]thiazolines were useful for the further preparation of unknown thia-triaza-tricyclo derivatives. Novel hexahydro-1,3-benzothiazoles have been achieved by reaction of N,N′-dialkylthioureas on N-1-phenyl-2-(1-cyclohexenyl)-1-diazene-1-carboxyamide. The acidic hydrolysis of spirocycloalkyl-thiazolinones produced 2-imino-5-(ω-carboxyalkyl)-4-thiazolidinones.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号