Results 11 to 20 of about 10,322 (256)

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
doaj   +2 more sources

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
doaj   +2 more sources

Amidines. II. Preparation of unsymmetrical N1,N2-disubstituted amidines.

Chemical and Pharmaceutical Bulletin, 1990
Unsymmetrical N1, N2-disubstituted amidines were prepared by conventional and newly developed methods. Reaction of N1-tosyl-N1, N2-diarylacetamidines and arylamines gave unsymmetrical acetamidines in the presence of basic catalysts, and N1-acyl-N1, N2-di(p-nitrophenyl)formamidines and arylamines gave unsymmetrical formamidines under neutral conditions.
Machiko ONO, Reiko TODORIKI, Shinzo TAMURA   +2 more
openaire   +3 more sources

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
doaj   +2 more sources

Stereospecific Insertion of Cyclic Amidines into Aryl-Substituted Cyclopropanones: Access to Complex Spirocyclic Aminals. [PDF]

Org Lett
Herzog R, Agrawal I, von Köller HF, Kloiber K, Werz DB.   +4 more
europepmc   +2 more sources

Methanol-Assisted CO₂ Fixation by Hydroxyl-Containing Amidine Leading to Polymeric Ionic Liquid and Cross-Linked Network Formation. [PDF]

Polymers (Basel)
Irgibaeva I, Barashkov N, Tarikhov F, Aldongarov A, Salkeeva L, Dzhardimalieva G, Tashenov Y.   +6 more
europepmc   +2 more sources

Frame-Shifted Synthesis of Oligoheterocycles as a Platform for Molecular Design. [PDF]

Angew Chem Int Ed Engl
Modern chemistry seeks to turn the simple raw materials into complex molecules that matter in health, agriculture, and technology. Among these, oligoheterocycles stand out for their versatility, yet they are most often built by cross‐coupling reactions that often rely on expensive metal catalysts.
Bastick KAC, Griesbach CE, Huang BZ, Cordell MJ, Ou YD, Aspuru-Guzik A, Yudin AK.   +6 more
europepmc   +3 more sources

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
doaj   +1 more source

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