dehydrogenative C-N coupling between aryl C-H and N-H bonds using a hypervalentiodine reagent under mild conditions offers a versatile and convenient method for synthesizing various benzimidazole-fused heterocycles. hypervalentiodine reagent - C-N bond forming cyclization - benzimidazole-fused heterocycles - straightforward synthesis - mild conditions
[EN] PREPARATION OF CATIONIC AND NEUTRAL FUSED N-HETEROCYCLES WITH OR WITHOUT ADDITIONAL HETEROATOMS<br/>[FR] PRÉPARATION DE N-HÉTÉROCYCLES FUSIONNÉS CATIONIQUES ET NEUTRES AVEC OU SANS HÉTÉROATOMES SUPPLÉMENTAIRES
申请人:NAT UNIV SINGAPORE
公开号:WO2021162633A1
公开(公告)日:2021-08-19
Disclosed herein is a process for the manufacture of a cationic fused N-heterocyclic ring system, comprising reaction of a compound of formula (I): with a base and with a material FF or only with a base to provide a compound of formula (II): where the symbols are defined herein.
Synthesis and Crystal Structures of Benzimidazole-2-thione Derivatives by Alkylation Reactions
作者:El El Ashry、Yeldez El Kilany、Nariman Nahas、Assem Barakat、Nadia Al-Qurashi、Hazem Ghabbour、Hoong-Kun Fun
DOI:10.3390/molecules21010012
日期:——
Alkylated, benzylated and bromoalkylated benzimidazole-thione that intramolecularly heterocyclized to 3,4-dihydro-2H-[1,3]thiazino[3,2-a]benzimidazole were synthesized. The chemical structure of the synthesized product was characterized by Infra Red, 1H-NMR, 13C-NMR, and Mass spectroscopy. Furthermore, the molecular structures of 8 and 9 were confirmed by X-ray single crystallography in different space groups, Pbca and P21/c, respectively.
Synthesis, characterization and antitumor activity of platinum triamine complexes containing imidazothiazole ligands
作者:Cheryl L. Baird、Amy E. Griffitts、Stephen Baffic、Patricia Bryant、Bruce Wolf、Jennifer Lutton、Michael Berardini、Georgia M. Arvanitis
DOI:10.1016/s0020-1693(96)05453-9
日期:1997.3
evaluated as potentialantitumoragents. The complexes were cis or trans isomers of the form [PtA 2 (N-het)Cl] + or [PtA 2 (N-het)Cl 3 ] + , where A is the monodentate amine, NH 3 , or A 2 is the bidentate amine, ethylenediamine (en), and N-het is an imidazothiazole or a derivative. The structures of two of the platinum complexes, [Pt(en)(C 5 H 6 N 2 OS)Cl]NO 3 ( 5b ) and [Pt(en)(C 5 H 6 N 2 OS)Cl 3 ]NO
摘要制备了一系列铂(II)和铂(IV)三胺配合物,并对其进行了表征和评价,认为它们是潜在的抗肿瘤药物。络合物为[PtA 2(N-het)Cl] +或[PtA 2(N-het)Cl 3] +形式的顺式或反式异构体,其中A是单齿胺,NH 3或A 2是二齿胺,乙二胺(en)和N-het是咪唑并噻唑或衍生物。[Pt(en)(C 5 H 6 N 2 OS)Cl] NO 3(5b)和[Pt(en)(C 5 H 6 N 2 OS)Cl 3] NO 3两种铂配合物的结构(5e)通过单晶X射线衍射测定。络合物5b的晶体在空间群Pna2 1中为正交晶体,a = 9.2451(7),b = 18.950(2),c = 7.908(2)A,Z = 4。复数5e的那些在空间群P(-1)中为三斜线,a = 8.2884(9),b = 10.853(1),c = 11.244(2)A,α= 72.50(1),β= 70