621-09-0Relevant articles and documents
Access to Amidines and Arylbenzimidazoles: Zinc-Promoted Rearrangement of Oxime Acetates
Zhu, Zhongzhi,Cen, Jinghe,Tang, Xiaodong,Li, Jianxiao,Wu, Wanqing,Jiang, Huanfeng
, p. 2020 - 2031 (2018/04/09)
An efficient and straightforward zinc-promoted rearrangement of oxime acetates with arylamines for the synthesis of amidines has been developed under mild conditions. This process involves N?O/C?C bond cleavages and C?C/C?N bond formations. Various oxime
Metal-Free One-Pot Synthesis of N,N′-Diarylamidines and N-Arylbenzimidazoles from Arenediazonium Salts, Nitriles, and Free Anilines
Youn, So Won,Lee, Eun Mi
supporting information, p. 5728 - 5731 (2016/11/17)
A highly efficient and facile metal-free, one-pot reaction has been developed to afford diversely substituted N-arylbenzimidazoles through chemoselective in situ generation of N,N′-diarylamidines from arenediazonium salts, nitriles, and free anilines. The advantages of this protocol consist of the operationally easy and simple one-pot procedure under metal-free and mild conditions, the direct use of inexpensive and commercially available chemicals, and thus, a cost-effective and greener process.
Highly active nano-MgO catalyzed, mild, and efficient synthesis of amidines via electrophilic activation of amides
Das, Vijay Kumar,Thakur, Ashim Jyoti
, p. 4164 - 4166 (2013/07/26)
Nano-MgO catalyzed synthesis of amidine derivatives is developed under solvent-free reaction condition at 70 C. Reusability of the catalyst and shorter reaction time as well as high yields are the advantages of this procedure.
Facile one-pot syntheses of amidines and enamines from oximes via Beckmann rearrangement using trifluoromethanesulfonic anhydride
Takuwa, Tomofumi,Minowa, Tomofumi,Onishi, Jim Yoshitaka,Mukaiyama, Teruaki
, p. 1717 - 1725 (2007/10/03)
Iminocarbocation intermediates were in situ-generated by treating various oximes with trifluoromethanesulfonic anhydride (Tf2O) in the presence of triethylamine in toluene and nucleophilic trapping with amines or sodium enolates under mild conditions afforded the corresponding amidines and enamines. Some of the thus-obtained enamines were converted to 2-substituted 4-oxo-3-quinolinecarboxylic acid derivatives by subsequent intramolecular Friedel-Crafts acylation.
An intramolecular palladium-catalysed aryl amination reaction to produce benzimidazoles
Brain, Christopher T,Brunton, Shirley A
, p. 1893 - 1895 (2007/10/03)
A novel synthesis of benzimidazoles by a palladium-catalysed intramolecular N-arylation reaction from (o-bromophenyl)amidine precursors is described.
Organometallic complexes of aluminium, gallium and indium
-
, (2008/06/13)
Novel organometallic complexes of aluminium, gallium and indium are disclosed, having improved stability and volatility for use in CVD processes. These are donor ligand complexes of the formula MR2 L where M is the metal, R is an alkyl group and L is a ligand containing an amidine (R'N. . . C(R'). . . NR') group, where R' is H, alkyl etc.
N1,N2-diphenylacetamidine
Phillips, Paul R.,Barker, James,Errington, William,Wallbridge, Malcolm G. H.
, p. 1968 - 1971 (2007/10/03)
The structure of the title compound, C14H14N2, consists of amidine molecules hydrogen-bonded to form an alternating chain-like arrangement. Each molecule is bonded to two other molecules by N-H...N bonds. In each amidine N-C-N fragment, the C-N bond distances are different [1.281 (3) and 1.364 (3) A], indicating some C=N imine character in one of the bonds.
N,N'-DIPHENYLACETAMIDINIUM CARBOXYLATES
Krechl, Jiri,Smrckova, Svatava,Ludwig, Miroslav,Kuthan, Josef
, p. 469 - 478 (2007/10/02)
Various N,N'-diphenylacetamidinium carboxylates were prepared and the nature of the amidinium-carboxylate interactions was examined by 1H and 13C NMR spectra.Correlation between pKa of the respective acids and 1H NMR shifts in CHCl3 is described.The compounds due to their solubility and other physico-chemical properties represent valuable models of lactate dehydrogenase active site.
Use of Lanthanide(III) Ions as Catalysts for the Reactions of Amines with Nitriles
Forsberg, John H.,Spaziano, Vincent T.,Balasubramanian, Trichey M.,Liu, Gordon K.,Kinsley, Steven A.,et al.
, p. 1017 - 1021 (2007/10/02)
Catalytic amounts of lanthanide(III) triflates promote reactions between amines and nitriles leading to a variety of products.The Ln3+ ions activate weakly coordinating nitriles at large amine: Ln3+ mole ratios, even in the presence of amines that form thermodynamically stable complexes with Ln3+ ions.The reactions involving primary monoamines and diamines appear to be general and provide a viable synthetic route to N,N'-disubstituted amidines (2) and cyclic amidines (4), respectively.Symmetrically substituted triazines (8 or 9) are observed as byproducts in some of these systems when the reactions are carried out by using excess nitrile.Secondary alicyclic amines or dimethylamine reacts with acetonitrile to yield pyrimidines (6) and 2,4,6-trimethyl-s-triazine (8).Two routes to triazine have been proposed, one involving the reaction of ammonia with the nitrile and the second involving the reaction of an amidine (1 or 5) with the nitrile.The ability of Ln3+ ions to activate nitriles under conditions that oppose nitrile coordination is attributed to the lability of Ln3+ complexes derived from N-donors.