Ketones derived from unsubstituted 2,3-dihydroperimidine were obtained by the selective reduction of the corresponding acylperimidines. The direct acylation of 2,3-dihydroperimidine in PPA is accompanied by dehydrogenation and leads to 4(9)-acylperimidines. The spectral characteristics of these products were discussed.
Ketones derived from unsubstituted 2,3-dihydroperimidine were obtained by the selective reduction of the corresponding acylperimidines. The direct acylation of 2,3-dihydroperimidine in PPA is accompanied by dehydrogenation and leads to 4(9)-acylperimidines. The spectral characteristics of these products were discussed.
A facile and efficient synthesis of<i>N</i>-substituted furo[3,4-<i>b</i>]indeno[2,1-<i>e</i>]pyridine analogues of azapodophyllotoxin<i>via</i>microwave-assisted multicomponent reactions
作者:Feng Shi、Ge Zhang、Yan Zhang、Ning Ma、Bo Jiang、Shu-Jiang Tu
DOI:10.1002/jhet.187
日期:2009.9
The efficient and facilesynthesis of N-substituted furo[3,4-b]indeno[2,1-e]pyridine analogues of azapodophyllotoxin was achieved via microwave-assisted multicomponent reactions of aldehyde, 2H-indene-1,3-dione and 4-(arylamino)furan-2(5H)-one in glycol without catalyst. This method has the obvious advantages over traditional heating ones on short reaction time, high yield, operational simplicity as
的有效和简便合成ñ -取代呋喃并[3,4- b ]茚并[2,1- ë ]吡啶azapodophyllotoxin类似物达到通过微波辅助的多组分反应的醛,在没有催化剂的情况下在乙二醇中的2 H-茚-1,3-二酮和4-(芳基氨基)呋喃-2(5 H)-1 。与传统的加热方法相比,该方法具有明显的优势,即反应时间短,产率高,操作简便以及对环境友好。J.杂环化学,(2009)。
Synthesis of 1,2,6,8-tetraazapyrenes by the reaction of aldehydes and ketones of 1H-perimidine series with diethyl azodicarboxylate in polyphosphoric acid
作者:A. M. Zhirov、A. S. Kolesnikova、I. V. Aksenova、A. S. Lyakhovnenko、A. V. Aksenov
DOI:10.1007/s11172-013-0153-7
日期:2013.4
on the reaction of 6(7) formyl(benzoyl)perimidines with diethyl azodicar boxylate. Lewis5—8 or Brønsted acids8,9 were used as catalysts in the reaction of azodicarboxylates with arenes. We showed that the reaction of 6(7) formyl(benzo yl)perimidines 1a—c with a two fold excess of diethyl azodicarboxylate (2) in polyphosphoric acid (PPA) at 80—90 C with subsequent treatment of the reaction mix ture
Novel approach to the synthesis of 1,3-diazapyrenes
作者:A. V. Aksenov、I. V. Borovlev、I. V. Aksenova、D. A. Lobach、A. S. Lyakhovnenko
DOI:10.1007/s10593-009-0227-5
日期:2009.1
Methods have been developed for the synthesis of 1,3-diazapyrenes based on the reactions of perimidines with ethoxymethylene-1,3-dicarbonyl compounds and also 6(7)-benzoyl(acetyl, formyl)perimidines with carbonyl compounds in PPA.
Synthesis of N-Phenyl-1,5,7-Triazacyclopenta[cd]- Phenalenes by the Reaction of 1H-Perimidine Carbonyl Derivatives with Nitrobenzene
作者:S. V. Shcherbakov、D. A. Lobach、M. Rubin、A. V. Aksenov
DOI:10.1007/s10593-014-1531-2
日期:2014.8
6(7)-Acylperimidines nitration and methods of peri-annelation on this base
作者:A. V. Aksenov、N. A. Aksenov、A. S. Lyakhovnenko、A. N. Smirnov、I. I. Levina、I. V. Aksenova
DOI:10.1007/s10593-013-1335-9
日期:2013.10
A method has been developed for the nitration of 6(7)-acylperimidines using sodium nitrite in formic acid. The reaction gives a mixture of 4(9)-, 9(4)-, and 7(6)-nitro-6(7)-acylperimidines from which the latter can be separated by extraction with chloroform. Reduction of the 6(7)-acyl-7(6)-nitro- perimidines yields 1H-1,5,7-triazacyclopenta[cd]phenalenes. Subsequent Schmidt reaction and reduction give 1,3,6,8-tetraazapyrenes.