Results 1 to 10 of about 7,024 (190)

An isofagomine analogue with an amidine group in the 1,6-position [PDF]

Royal Society Open Science
The synthesis of an isofagomine analogue with an amidine group in the 1,6-position is described. Density functional theory calculations showed that this compound has a remarkably different charge distribution compared with isofagomine.
I. Caroline Vaaland Holmgard, Idd Andrea Christensen, Ljupcho Pejov, Monika Moreń, Nikolai Westlund, Tereza Cristina Santos Evangelista, Magne O. Sydnes, Finn L. Aachmann, Óscar López, Emil Lindbäck   +9 more
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Nucleophilic Addition Reactions to 10-Acetonitrilium Derivative of nido-Carborane and Intramolecular NH⋯HB Interactions in N-Alkyl Amidines 10-RNHC(Me)=NH-7,8-C₂B₉H₁₁ [PDF]

Molecules
The addition reactions of water, alcohols, and primary and secondary amines to the 10-acetonitrilium derivative of nido-carborane were studied. Hydrolysis of 10-MeC≡N-7,8-C2B9H11 results in iminol 10-MeC(OH)=HN-7,8-C2B9H11, which, on treatment with a ...
Kirill R. Pakholkov, Ekaterina V. Bogdanova, Marina Yu. Stogniy, Kyrill Yu. Suponitsky, Sergey A. Anufriev, Igor B. Sivaev, Vladimir I. Bregadze   +6 more
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Innovative Syntheses and Reactivity of Propiolamidines [PDF]

Molecules
Polydentate ligands with nitrogen donor atoms have possibly given rise to the largest group of coordination complexes described. Among these ligands, amidinates represent a nitrogenated version of carboxylates and allow the formation of complexes with ...
Carlos Ginés, Blanca Parra-Cadenas, Fernando Carrillo-Hermosilla, David Elorriaga   +3 more
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Hypotheses for synthesis of novel chiral beta-amino-beta-lactams through amidines

Results in Chemistry, 2021
Synthesis of new beta-lactams is an attractive field because some of these types of molecules are biologically active. The design and preparation of C4-nitrogen-substituted beta-lactams are not known.
Bimal Krishna Banik, Alberto Boretti
doaj   +1 more source

Iron-catalyzed [4 + 2] annulation of amidines with α,β-unsaturated ketoxime acetates toward 2,4,6-trisubstituted pyrimidines

Green Synthesis and Catalysis, 2023
An iron-catalyzed [4 ​+ ​2] annulation of amidines with α,β-unsaturated ketoxime acetates is described. This strategy employs amidines as CN units and provides a new protocol for the construction of 2,4,6-trisubstituted pyrimidines under batch and ...
Qinghuan Wu, Luchao Li, Binyan Xu, Jie Sun, Dong Ji, Yuguang Li, Lei Shen, Zheng Fang, Jindian Duan, Beining Chen, Kai Guo   +10 more
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Cascade Transformations of 1-R-Ethynyl-9,10-anthraquinones with Amidines: Expanding Access to Isoaporphinoid Alkaloids

Molecules, 2021
The interaction of acetamidine and phenylamidine with peri-R-ethynyl-9,10-anthraquinones in refluxing n-butanol leads to the formation of cascade transformations products: addition/elimination/cyclization―2-R-7H-dibenzo[de,h]quinolin-7-ones and(or) 2-R-3-
Sergey Francevich Vasilevsky, Ol’ga Leonidovna Krivenko, Irina Vasilievna Sorokina, Dmitry Sergeevich Baev, Tatyana Genrikhovna Tolstikova, Igor V. Alabugin   +5 more
doaj   +1 more source

Synthesis of Cyclic N-Acyl Amidines by [3 + 2] Cycloaddition of N-Silyl Enamines and Activated Acyl Azides

Molecules, 2022
In this study, we describe the synthesis of cyclic N-acyl amidines from readily available N-heteroarenes. The synthetic methodology utilized the versatile N-silyl enamine intermediates from the hydrosilylation of N-heteroarenes for the [3 + 2 ...
Dong Geun Jo, Changeun Kim, Sinjae Lee, Sooyeon Yun, Seewon Joung   +4 more
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A New Approach for the Synthesis of N-Arylamides Starting from Benzonitriles

Chemistry Proceedings, 2021
N-Arylamides are a ubiquitous component of a broad range of natural products and biologically active compounds. In this paper, a new synthetic protocol for the preparation of N-arylamides was developed via the hypervalent iodine-mediated aza-Hofmann-type
Pradip Debnath
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Synthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide)

Molecules, 2021
A series of novel cobalt bis(dicarbollide) based amidines were synthesized by the nucleophilic addition of primary and secondary amines to highly activated B-N+≡C–R triple bond of the propionitrilium derivative [8-EtC≡N-3,3′-Co(1,2-C2B9H10)(1′,2′-C2B9H11)
Ekaterina V. Bogdanova, Marina Yu. Stogniy, Kyrill Yu. Suponitsky, Igor B. Sivaev, Vladimir I. Bregadze   +4 more
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Syntheses and molecular structures of some di(amidino)monosilanes

Main Group Metal Chemistry, 2021
The syntheses of three different amidinosilanes of the type Me2Si[N=C(Ph)R]2 with R = pyrrolidino, morpholino, and diethylamino and one derivative with the composition R2Si[N=C(Ph)R]2 with R = morpholino are reported. These compounds were prepared in one-
Bös Markus, Herbig Marcus, Böhme Uwe, Kroke Edwin   +3 more
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