Rational design of an efficient one-pot synthesis of 6H-pyrrolo[2,3,4-gh]perimidines in polyphosphoric acid
作者:Alexander V. Aksenov、Nicolai A. Aksenov、Dmitrii S. Ovcharov、Dmitrii A. Aksenov、Georgii Griaznov、Leonid G. Voskressensky、Michael Rubin
DOI:10.1039/c6ra17269e
日期:——
Several highly efficient one-pot synthetic protocols were developed, enabling polyphosphoric acid-activated nitroalkanes to act as electrophiles in reactions with aminonapthalenes. The featured methods allow for the single step assembly of...
Synthesis and special features of the structure of 6(7)-aminoperimidine derivatives
作者:A. V. Aksenov、A. S. Lyakhovnenko、N. C. Karaivanov、I. I. Levina
DOI:10.1007/s10593-010-0532-z
日期:2010.8
of perimidines with sodium azide in PPA. The corresponding amides were synthesized by acylation and were also obtained by the Schmidt reaction from 6(7)-acetyl(or benzoyl)perimidines. A special feature of the structure of the 2-substituted amines and amides is the presence of annular tautomerism slow in NMR time.
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 2,3-dihydroperimidine ketones
作者:I. V. Borovlev、O. P. Demidov
DOI:10.1007/s10593-009-0325-4
日期:2009.6
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.
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.