Simple construction of fused and spiro nitrogen/sulfur containing heterocycles by addition of thioamides or thioureas on cycloalkenyl-diazenes: examples of click chemistry
作者:Orazio A. Attanasi、Lucia De Crescentini、Gianfranco Favi、Paolino Filippone、Gianluca Giorgi、Fabio Mantellini、Francesca R. Perrulli、Domenico Spinelli
DOI:10.1016/j.tet.2008.01.102
日期:2008.4
New 1-cycloalkenyl-1-diazenes have been obtained in good yields from cyclic β-ketoesters and hydrazine derivatives. They furnished new cycloalkyl[d][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 spiro[cycloalkyl-1,2′-imidazo[2,1-b][1,3]thiazole] or spiro[cycloalkyl-1
从环状β-酮酸酯和肼衍生物以高收率获得了新的1-环烯基-1-二氮烯。他们提供了带有硫酰胺的新环烷基[ d ] [1,3]噻唑啉或带有硫脲的新的螺环烷基-噻唑啉酮。此外,他们还与咪唑烷-2-硫酮和四氢嘧啶-2-硫酮一起提供了新的有趣的螺[环烷基-1,2'-咪唑并[2,1- b ] [1,3]噻唑]或螺[环烷基-1分别是,2′-[1,3]噻唑并[3,2- a ]嘧啶]衍生物。环烷基[ d ] [1,3]噻唑啉可用于进一步制备未知的硫杂-三氮杂-三环衍生物。通过N,N'-二烷基硫脲在环己基上的反应获得了新型的六氢-1,3-苯并噻唑N -1-苯基-2-(1-环己烯基)-1-重氮-1-羧酰胺。螺环烷基-噻唑啉酮的酸性水解产生2-亚氨基-5-(ω-羧烷基)-4-噻唑烷酮。