6281-14-7Relevant academic research and scientific papers
One-pot catalytic synthesis of 2,7-bis-substituted 4,9(10)-dimethyl-2,3a,5a,7,8a,10a-hexaazaperhydropyrenes
Rakhimova, Elena B.,Kirsanov, Victor Yu.,Meshcheryakova, Ekaterina S.,Khalilov, Leonard M.,Kutepov, Boris I.,Ibragimov, Askhat G.,Dzhemilev, Usein M.
, p. 6880 - 6886 (2017)
Catalytic methods for the synthesis of 2,7-bis-substituted 4,9(10)-dimethyl-2,3a,5a,7,8a,10a-hexaazaperhydropyrenes have been developed. The structure was established on the basis of 1H and 13C NMR spectra, 2D NMR (HSQC, HMBC, COSY, NOESY) techniques, MALDI TOF/TOF spectra, and X-ray diffraction data. Primary screening of the synthesized hexaazaperhydropyrenes for antimicrobial activity was performed.
N -Substituted tetrahydropentaazadibenzocycloheptafluorenes-a new type of condensed polyazapolycyclic system
Rakhimova, Elena B.,Kirsanov, Victor Yu.,Mescheryakova, Ekaterina S.,Khalilov, Leonard M.,Ibragimov, Askhat G.
, p. 1240 - 1246 (2021)
The first synthesis of N-substituted tetrahydro-4b,5a,10b,12,13a-pentaazadibenzo[a,h]cyclohepta[1,2,3,4-def]fluorenes has been successfully accomplished via ring transformation reaction of 1,3,5-tricycloalkyl-1,3,5-triazinanes with octahydro-2,2′-biquinazoline in the presence of NiCl2·6H2O as a catalyst. The structure was established on the basis of spectral data, mainly 1D (1H, 13C) and 2D (HSQC, HMBC, COSY) NMR spectra, and X-ray diffraction data. Hirshfeld surface analysis was used to study intermolecular interactions in the crystal. This journal is
Synthesis and Crystal Structure of Dipotassium Salts of N-Alkyl-N-{[O-alkoxy(hydroxy)phosphoryl]methyl}ditiocarbamic Acids
Garifzyanov, A. R.,Islamov, D. R.,Mirzayanov, I. I.,Shtyrlin, V. G.
, p. 381 - 384 (2020/04/27)
Abstract: A one-pot method for the synthesis of dipotassium salts of N-alkyl-N-{[O-alkoxy(hydroxy)phosphoryl]methyl}dithiocarbamic acids has been elaborated. Dipotassium salts of N-isopropyl-, N-butyl-, and N-cyclohexyl-N-{[hydroxy(O-ethoxy)phosphoryl]methyl}dithiocarbamic acids as well as N-{[O-butoxy(hydroxy)phosphoryl]methyl}-N-(2-methoxyethyl)dithiocarbamic acid have been synthesized and isolated. Crystal and molecular structure of the latter compound have been elucidated.
Synthesis, structure, and antitumor activity of 2,9-disubstituted perhydro 2,3a,7b,9,10a,14b-hexaazadibenzotetracenes
D'yakonov, Vladimir A.,Dzhemilev, Usein M.,Dzhemileva, Lilya U.,Ibragimov, Askhat G.,Khalilov, Leonard M.,Kirsanov, Victor Yu.,Rakhimova, Elena B.,Tret'yakova, Elena V.
, p. 21039 - 21048 (2020/06/26)
Catalytic methods for the synthesis of previously unknown 2,9-disubstituted 3bR*,7aR*,10bR*,14aR*-cis-14c,14d-perhydro-2,3a,7b,9,10a,14b-hexaazadibenzotetracenes have been developed. The structures were established by 1D (1H,13C) and 2D (COSY, HSQC, HMBC) NMR spectroscopy, MALDI TOF/TOF mass spectrometry, and X-ray diffraction analysis. Primary screening of the synthesized perhydro hexaazadibenzotetracenes for antitumor activity was carried out.
First Synthesis of 2,9-Disubstituted cis-2,3a,7b,9,10a,14b- Hexaazaperhydrodibenzotetracenes
Rakhimova, Elena B.,Kirsanov, Victor Yu.,Mescheryakova, Ekaterina S.,Khalilov, Leonard M.,Ibragimov, Askhat G.,Dzhemilev, Usein M.
, p. 1861 - 1866 (2018/07/21)
The first synthesis of 2,9-disubstituted cis-2,3a,7b,9,10a,14b-hexaazaperhydrodibenzotetracenes has been accomplished through intermolecular heterocyclization of N, N -bis(methoxymethyl)alkylamines with cis -1,6,7,12-tetraazaperhydrotetracene in the presence of SmCl 3 ·6H 2 O catalyst or by recyclization of 1,3,5-tricycloalkyl-1,3,5-triazinanes with cis -1,6,7,12-tetraazaperhydrotetracene in the presence of NiCl 2 ·6H 2 O catalyst. The structures were established by 1D (1 H, and 13 C) and 2D (HSQC, HMBC, COSY, NOESY) NMR spectroscopy, MALDI TOF/TOF mass spectrometry, and X-ray diffraction analyses.
1,3,5-Trialkyl-hexahydro-1,3,5-triazines-N-methylenealkylamines equilibria. 1H NMR studies in solutions
Adamczyk-Wo?niak, Agnieszka,Bujnowski, Krzysztof,Sporzyński, Andrzej
body text, p. 177 - 181 (2009/03/12)
The behavior of 1,3,5-trialkyl-1,3,5-hexahydrotriazines (A) in a variety of solvents was investigated by 1H NMR. A are stable for linear alkyls in deuterated solvents such as chloroform, benzene, acetone, dioxane, dimethylsulfoxide and acetonitrile. In case of branched alkyls, A are in equilibrium with N-methylenealkylamines (B). The A/B ratio depends on solvent, concentration of the sample and temperature. A react easily with methanol and lead to the formation of N-(methoxymethyl)amines (C), which are in equilibrium with B. Both the quantitative evaluation of A-B equilibrium in solutions as well as the formation of C in methanol was described for the first time.
Preparation of N,O-Aminals as Synthetic Equivalents of H2C=NAr and (H2C=NHAr)+ ions: Neutral- and Acid-promoted Transformations
Barluenga, Jose,Bayon, Ana M.,Campos, Pedro,Asensio, Gregorio,Gonzalez-Nunez, Elena,Molina, Yolanda
, p. 1631 - 1636 (2007/10/02)
A general method for the synthesis of N, O-aminals derived from primary aromatic amines is described.The reactivity of these compounds under neutral and acidic conditions has been studied and the title compounds can be envisaged as general purpose H2C=NAr or (H2C=NAr)+ equivalents.N,O-Aminals have been converted into perhydrotriazines by moderate heating and into bis(4-aminoaryl)methane derivatives or N-benzylarylamines, respectively, when heated in acidid media with pH control.Reduction od N,O-acetals with sodium cyanoborohydride has revealed that the C-O bond is broken exclusively in acidic media.
Reaction of Rifamycins with Hexahydro-1,3,5-triazines Prepared from Formaldehyde and Primary Aliphatic Amines
Taguchi, Masahiro,Aikawa, Norio,Tsukamoto, Goro
, p. 2431 - 2436 (2007/10/02)
Rifamicin S (1) and 25-O-deacetylrifamycin S reacted with 1,3,5-tributylhexahydro-1,3,5-triazine to give deep-blue compounds.The structures of the deep-blue compounds are discussed based on 13C NMR data, and it is concluded that the earlier structures should be partly re-revised.The mechanism of formation of the deep-blue compounds and the reaction of 1 with several hexahydro-1,3,5-triazines, which were prepared from formaldehyde and primary aliphatic amines, are also described.
Reaction of Cyclohexylamine with Formaldehyde: The Structure of N',N'',N'''-Tricyclohexylhexahydro-sym-triazine
Zangrando, Ennio,Poggi, Gabriella,Giumanini, Angelo G.,Verardo, Giancarlo
, p. 195 - 202 (2007/10/02)
A reported preparation of 1,3-dicyclohexyl-1,3-diazacyclobutane (2) is rebutted: the correct structure is that of N',N'',N'''-tricyclohexylhexahydro-sym-triazine (5), having a diequatorial-axial conformation in the solid state, as shown by mass spectrometry and X-ray diffraction.Theoretical calculations were carried out in order to predict the stabilities of 1,2- and 1,3-diazacyclobutane (14 and 1) and their geometries.
Monoalkylation of Primary Aliphatic Amines via N-Alkyl-N-(alkylthiomethyl)ammonium Chlorides. Evidence for the Formation of Stable N-Methylenealkylamines
Barluenga, Jose,Bayon, Ana M.,Asensio, Gregorio
, p. 427 - 428 (2007/10/02)
Monomeric N-methylenealkylamines (3), formed from N-alkyl-N-(alkylthiomethyl)ammonium chlorides (5) are stable at -60 deg C and may be trapped with organometallic reagents to provide the N,N-dialkylamines (8).
