在本函中,我们报道了使用N-芳基腐胺作为合成中间体,用于制备N-酰基-N'-芳基四亚甲基二胺3和相关的七元杂环am 4。通过Cs 2 CO 3 / KI介导的4-氯丁腈的氨解并随后还原来合成化合物1。二胺1与羧酸酐的N-酰化选择性地导致N-酰基-N'-芳基四亚甲基二胺3。由PPE促进的此类前体的微波辅助闭环反应允许合成迄今未报道的1-芳基-2-烷基-1 H -1,4,5,6-四氢-1,3-二氮杂4。
在本函中,我们报道了使用N-芳基腐胺作为合成中间体,用于制备N-酰基-N'-芳基四亚甲基二胺3和相关的七元杂环am 4。通过Cs 2 CO 3 / KI介导的4-氯丁腈的氨解并随后还原来合成化合物1。二胺1与羧酸酐的N-酰化选择性地导致N-酰基-N'-芳基四亚甲基二胺3。由PPE促进的此类前体的微波辅助闭环反应允许合成迄今未报道的1-芳基-2-烷基-1 H -1,4,5,6-四氢-1,3-二氮杂4。
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
The efficient copper-catalyzed cyanoalkylation of amines via C–Cbondcleavage has been demonstrated. Distinctive features of this procedure involves mild conditions, broad range of nitrogen nucleophiles, high selectivity, and good functional group tolerance, thus providing a useful approach for the C(sp3)–N bond formations. Most importantly, this protocol is applicable to the late-stage functionalization
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.
An Efficient Synthesis of<i>N</i>-Alkyl-<i>N</i>-arylputrescines and Cadaverines
作者:María C. Mollo、Nadia Gruber、Jimena E. Díaz、Juan Á. Bisceglia、Liliana R. Orelli
DOI:10.1080/00304948.2014.944404
日期:2014.9.3
1,n-Diamines. Part 2: Synthesis of acyclic and heterocyclic N-arylputrescine derivatives
作者:Jimena E. Díaz、Juan Á. Bisceglia、Ma. Cruz Mollo、Liliana R. Orelli
DOI:10.1016/j.tetlet.2011.02.042
日期:2011.4
and related seven-membered heterocyclic amidines 4. Compounds 1 were synthesized by Cs2CO3/KI-mediated aminolysis of 4-chlorobutyronitrile and subsequent reduction. N-Acylation of diamines 1 with carboxylic acid anhydrides led selectively to N-acyl-N′-aryl tetramethylenediamines 3. Microwave-assisted ring closure of such precursors promoted by PPE allowed for the synthesis of hitherto unreported 1-aryl-2-alkyl-1H-1
在本函中,我们报道了使用N-芳基腐胺作为合成中间体,用于制备N-酰基-N'-芳基四亚甲基二胺3和相关的七元杂环am 4。通过Cs 2 CO 3 / KI介导的4-氯丁腈的氨解并随后还原来合成化合物1。二胺1与羧酸酐的N-酰化选择性地导致N-酰基-N'-芳基四亚甲基二胺3。由PPE促进的此类前体的微波辅助闭环反应允许合成迄今未报道的1-芳基-2-烷基-1 H -1,4,5,6-四氢-1,3-二氮杂4。