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1.
Yoshiki Ohgo Saburo Neya Noriaki Funasaki Mikio Nakamura 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(6):694-695
The title complex, (diethyl 3,4,8,15,19,20‐hexamethyl‐21,22,23,24‐tetraazopentacyclo[16.2.1.12,5.17,11.114,17]tetracosa‐1(20),2(22),3,5,7,9,11,13(24),14,16,18‐undecaene‐9,14‐dicarboxylate‐κ4N)iodoiron(III) chloroform solvate, [Fe(C32H32N4O4)I]·CHCl3, shows an almost planar arrangement of the corrphycene moiety with a slightly distorted trapezoid pyramidal core; the FeIII atom is 0.416 (1) Å from the plane of the C20N4 system. The Fe—N distances are 2.049 (3), 2.044 (3), 2.079 (3) and 2.075 (3) Å. The solvated chloroform forms a C—H?O hydrogen bond [C?O 3.107 (10) Å] to an adjacent carbonyl O atom. This is the first X‐ray structure analysis of a corrphycenatoiron(III) derivative. 相似文献
2.
热力学稳定的带有大环配体的μ-氧桥联-双铁配合物,由于其两个铁中心之间的有趣的电子结构和磁相互作用而受到广泛关注。μ-氧桥联-双铁席夫碱配合物,[{Fe(tbusalphn)}2(μ-o)]
(1)和[{Fe(R,R-salchxn)}2(μ-o)] (2), 通过用咪唑或N-甲基咪唑的水溶液处理相应的单核铁氯化物,Fe(L)Cl,而获得。1和2的晶体结构通过x-射线结构分析而被确定。1属于三斜晶系,P-1空间群。2属于单斜晶系,P21/c空间群。由于1的配体带有庞大的叔丁基取代基,导致形成μ-氧桥联-双铁配合物时的空间拥挤,因此,其Fe-O-Fe夹角为176.5 o,几乎成平角。而2则由于配体上没有庞大的取代基,其Fe-O-Fe夹角为149.6o,明显小于1的Fe-O-Fe夹角。
本文还对两种μ-氧桥联-双铁席夫碱配合物及相应的单核铁氯化物的红外光谱、紫外-可见吸收光谱及圆二色光谱性质进行了研究。与相应的单体铁配合物相比较,生成μ-氧桥联-双铁席夫碱配合物后,出现一新的红外吸收带,归属于νFe-O-Fe振动。有趣的是,其数值与Fe-O-Fe夹角大小相对应。1和2除具有明显不同的Fe-O-Fe夹角外,它们的圆二色光谱却是相似的。
对1和2的磁性质研究表明,在这类化合物中两个铁(III)离子之间存在着强烈的分子内抗铁磁性偶合作用。另外,本文还采用循环伏安法对1和2的电化学性质进行了研究。 相似文献
3.
A novel dinuclear bismuth(III) coordination compound, [Bi2(C7H3NO4)2(N3)2(C12H8N2)2]·4H2O, has been synthesized by an ionothermal method and characterized by elemental analysis, energy‐dispersive X‐ray spectroscopy, IR, X‐ray photoelectron spectroscopy and single‐crystal X‐ray diffraction. The molecular structure consists of one centrosymmetric dinuclear neutral fragment and four water molecules. Within the dinuclear fragment, each BiIII centre is seven‐coordinated by three O atoms and four N atoms. The coordination geometry of each BiIII atom is distorted pentagonal–bipyramidal (BiO3N4), with one azide N atom and one bridging carboxylate O atom located in axial positions. The carboxylate O atoms and water molecules are assembled via O—H...O hydrogen bonds, resulting in the formation of a three‐dimensional supramolecular structure. Two types of π–π stacking interactions are found, with centroid‐to‐centroid distances of 3.461 (4) and 3.641 (4) Å. 相似文献
4.
Jing‐Yuan Xu Jin‐Lei Tian He‐Dong Bian Shi‐Ping Yan Dai‐Zheng Liao Peng Cheng Pan‐Wen Shen 《应用有机金属化学》2007,21(3):129-134
A new dialkoxo‐bridged diiron(III) complex, [Fe2(BMA)2(CH3O)2Cl2]·2Cl·4CH3OH ( 1 ) [BMA = N,N‐bis(2‐benzimidazolylmethyl)amine], was synthesized and characterized by UV‐visible absorption and infrared spectra and magnetic susceptibilities. The complex crystallizes in the monoclinic system, space group P2(1)/n, a = 12.9659(19) Å, b = 10.0278(16) Å, c = 17.919(2) Å, β = 93.766(8)° , V = 2324.8(6) Å3, Z = 2, F(000) = 1036, Dc = 1.426 g cm?3, µ = 0.908 mm?1. According to X‐ray crystallographic studies, each Fe(III) ion lies in a highly distorted octahedral environment, and two Fe(III) ions are bridged by the methoxyl oxygens. Cryomagnetic analyses indicated a moderate antiferromagnetic interaction between the high‐spin Fe(III) ions, with J = ? 27.05 cm?1. Moreover, the binding interaction of DNA with the diiron complex was investigated by spectroscopic and agarose gel electrophoretic methods, showing moderate cleavage activity on pBR322 plasmid DNA at physiological pH and temperature. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
5.
Rosenani A. Haque Muhammad Adnan Iqbal Srinivasa Budagumpi Mohamed B. Khadeer Ahamed Amin M. S. Abdul Majid Noorhafizah Hasanudin 《应用有机金属化学》2013,27(4):214-223
Salts of meta‐xylyl‐linked N‐ethyl/n‐butyl/benzyl‐substituted bis‐benzimidazolium having hexafluorophosphate counterions have been synthesized. The corresponding binuclear Ag(I)‐N‐heterocyclic carbene complexes were prepared by the reaction of Ag2O. The N‐heterocyclic carbene (NHC) ligand precursor 7 and Ag(I)–NHC complexes 10 and 11 have been structurally characterized by single‐crystal X‐ray diffraction technique. All of the reported compounds have been tested for their anticancer activity using human colorectal (HCT 116) cancer cell lines. Sterically varied benzimidazolium salts displayed significant activity against HCT 116 cell line, yielding IC50 values in the range 0.1–19.4 µ m , while Ag(I)–carbene complexes showed exceptionally good activity (0.2–1.3 µ m ) against tested cancer cell lines. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
6.
Several typical 13C‐NMR displacements (of C?O, C(α), C(β), and Cipso), as well as conformational or energy properties (S? N? C?O dihedral angle, ΔE syn/anti; HOMO/LUMO) could be correlated with the electronic parameters of p‐substituted N‐cinnamoylbornane‐10,2‐sultams 2 . Even under nonchelating conditions, the pyramidalization of the sultam N‐atom decreases for electron‐attracting p‐substituents, inducing a modification of the sultam‐ring puckering. Detailed comparison of the X‐ray structure analyses of 2b, 2d , and 2m showed that the orientation of the sterically directing pseudo‐axial S?O(2) and H? C(2) is modified and precludes any conclusion about the π‐facial stereoelectronic influence of the N lone pair on the alkyl Grignard 1,4‐addition. We also showed that the aggregating alkyl Grignard reagent may be used in equimolar fashion, demonstrating that the sultam moiety is chelated with a Lewis acid such as MgBr2. The Schlenk equilibrium may also be used to generate the appropriate conditions of effective 1,4‐diastereoselectivity. Although the anti‐s‐cis/syn‐s‐cis difference of conformational energies for N‐cinnamoyl derivatives 2 is higher than for the simple N‐crotonoyl analogue, an X‐ray structure analysis of the SO2/C?O syn derivative 10 confirms the predictive validity of our conformational calculations for ΔE≤1.8 kcal/mol. 相似文献
7.
Jong‐Ha Choi Takayoshi Suzuki Md. Abdus Subhan Sumio Kaizaki Yu Chul Park 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(7):m409-m412
The crystal structure of the title compound, (C2H10N2)[Cr(C4H9N2O2)2]2Cl4·2H2O, has been determined by single‐crystal X‐ray diffraction studies at 293 and 100 K. The analyses demonstrated that the crystal consists of ethylenediammonium dications (which lie about inversion centres), bis[N‐(2‐aminoethyl)glycinato]chromium(III) monocations, Cl? anions and hydrate water molecules, in a molecular ratio of 1:2:4:2. The complex cation unit has a slightly distorted octahedrally coordinated Cr atom, with two Cr—O and four Cr—N bonds in the ranges 1.951 (1)–1.953 (1) and 2.054 (1)–2.089 (2) Å, respectively, at 293 K. The geometry of the bis[N‐(2‐aminoethyl)glycinato]chromium(III) moiety was found to be trans,cis,cis with respect to the carboxylate O atom and the primary and secondary amine N atoms. The two analyses, at 293 and 100 K, exhibited no remarkable structural differences, although the colour of the crystals did differ, being red at 293 K and orange at 100 K. 相似文献
8.
Marco Crisma Fernando Formaggio Claudio Toniolo 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(6):695-696
Benzyl N‐[8‐(4,4‐dimethyl‐5‐oxo‐4,5‐dihydrooxazol‐2‐yl)‐2,5,5,8‐tetramethyl‐3,6‐dioxo‐4,7‐diazanon‐2‐yl]carbamate, C24H34N4O6, an oxazol‐5(4H)‐one from N‐α‐benzyloxycarbonyl‐(Aib)4‐OH (Aib = α‐aminoisobutyryl) represents the longest peptide oxazolone so far characterized by X‐ray diffraction. The overall geometry of the oxazolone ring compares well with literature data. The Aib(1) and Aib(2) residues are folded into a type III β‐bend, while the conformation adopted by Aib(3), preceding the oxazolone moiety, is semi‐extended. The disposition of the oxazolone ring relative to the preceding residue is stabilized by C—H?N and C—H?O intramolecular interactions. 相似文献
9.
Dr. Tetsuo Sato Yoichi Hirose Daisuke Yoshioka Tsubasa Shimojo Prof. Dr. Shuichi Oi 《Chemistry (Weinheim an der Bergstrasse, Germany)》2013,19(46):15710-15718
The synthesis and characterisation of a series of new Rh and Au complexes bearing 1,2,4‐triazol‐3‐ylidenes with a N‐2,4‐dinitrophenyl (N‐DNP) substituent are described. IR, NMR, single‐crystal X‐ray diffraction and computational analyses of the Rh complexes revealed that the N‐heterocyclic carbenes (NHCs) behaved as strong π acceptors and weak σ donors. In particular, a natural bond orbital (NBO) analysis revealed that the contributions of the Rh→Ccarbene π backbonding interaction energies (ΔEbb) to the bond dissociation energies (BDE) of the Rh? Ccarbene bond for [RhCl(NHC)(cod)] (cod=1,5‐cyclooctadiene) reached up to 63 %. The Au complex exhibited superior catalytic activity in the intermolecular hydroalkoxylation of cyclohexene with 2‐methoxyethanol. The NBO analysis suggested that the high catalytic activity of the AuI complex resulted from the enhanced π acidity of the Au atom. 相似文献
10.
Jia‐Xiang Yang Ze Zhang Jie‐Ying Wu Yu‐Peng Tian Qing‐Liang Liu Hoong Kun Fun Anwar Usman Zbi‐Qiang Xu K. Thompson Laurence 《中国化学》2003,21(11):1461-1465
The synthesis and characterization of the copper (II) complex [Cu2(OOCCH = C(CH3)Fc)3(phen)2]CIO4 · 2H2O (1) are reported. The structure of the complex was determined by single‐crystal X‐ray analysis. The compound crystallizes in the monoclinic system, space group Pc, with Z =2, a = 1.2799(4) nm, b =0.9969 (4) nm, c = 2.5228 nm, and β = 91.576 (1) °. The cationic part of 1 indicates a penametallic core in which three 3‐ferrocenyl‐2‐crotonic acid salt (FCA) groups act as (O, O') bridging ligands between two copper (II) ions with a square‐pyramidal environment. Cyclic voltammetric experiments in acetonitrile have been performed mainly to examine the Fe(II) → Fe(III) one‐electron oxidation in FCA and its complex. The variable‐temperature magnetic susceptibility measurements revealed very weak intramolecular anti‐ferromagnetic coupling. Fitting parameters are 2J = ‐0.2 cm?1, g = 2.114, and θ = 0K. 相似文献
11.
Fangfang Jian Ying Wang Lude Lu Xujie Yang Xin Wang Suchada Chantrapromma Hoong‐Kun Fun Ibrahim Abdul Razak 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(6):714-716
The crystal structures of tris(2‐methylquinolin‐8‐olato‐N,O)iron(III), [Fe(C10H8NO)3], (I), and aquabis(2‐methylquinolin‐8‐olato‐N,O)copper(II), [Cu(C10H8NO)2(H2O)], (II), have been determined. Compound (I) has a distorted octahedral configuration, in which the central Fe atom is coordinated by three N atoms and three O atoms from three 2‐methylquinolin‐8‐olate ligands. The three Fe—O bond distances are in the range 1.934 (2)–1.947 (2) Å, while the three Fe—N bond distances range from 2.204 (2) to 2.405 (2) Å. In compound (II), the central CuII atom and H2O group lie on the crystallographic twofold axis and the coordination geometry of the CuII atom is close to trigonal bipyramidal, with the three O atoms in the basal plane and the two N atoms in apical positions. The Cu—N bond length is 2.018 (5) Å. The Cu—O bond length in the basal positions is 1.991 (4) Å, while the Cu—O bond length in the apical position is 2.273 (6) Å. There is an intermolecular OW—H?O hydrogen bond which links the molecules into a linear chain along the b axis. 相似文献
12.
《应用有机金属化学》2017,31(12)
A new oxamido‐bridged dicopper(II) complex formulated as [Cu2(ndpox)(bpy)(CH3OH)2]‐ (ClO4), where H3ndpox is N‐(2‐hydroxy‐5‐nitrophenyl)‐N′‐[3‐(diethylamino)propyl]oxamide; and bpy represents 2,2′‐bipyridine, was synthesized and structurally characterized using X‐ray single‐crystal diffraction and other methods. In the molecule, the endo‐ and the exo‐copper(II) ions bridged by the cis ‐ndpox3− ligand are in {N3O2} and {N2O3} square‐ pyramidal environments, respectively. There is a three‐dimensional hydrogen bonding network dominated by O‐H···O and C‐H···O interactions in the crystal. The reactivity toward DNA/protein bovine serum albumin (BSA) revealed that the complex could interact with herring sperm DNA (HS‐DNA) through the intercalation mode, and effectively quench the intrinsic fluorescence of BSA via a static process. Cytotoxicity studies suggest that the complex displays selective cancer cell antiproliferative activity. The present investigation confirmed that the combined effects of both electron‐withdrawing and hydrophobic groups on the bridging ligand in the dicopper(II) complex systems can increase DNA/BSA‐binding ability and in vitro anticancer activity. 相似文献
13.
Melanie A. Short Roger D. Sommer Alec J. Falzone Tao Huang Walter W. Weare Jennifer L. Roizen 《Acta Crystallographica. Section C, Structural Chemistry》2019,75(6):717-722
While six‐coordinate iron(III) porphyrin complexes with pyridine N‐oxides as axial ligands have been studied as they exhibit rare spin‐crossover behavior, studies of five‐coordinate iron(III) porphyrin complexes including neutral axial ligands are rare. A five‐coordinate pyridine N‐oxide–5,10,15,20‐tetraphenylporphyrinate–iron(III) complex, namely (pyridine N‐oxide‐κO)(5,10,15,20‐tetraphenylporphinato‐κ4N,N′,N′′,N′′′)iron(III) hexafluoroantimonate(V) dichloromethane disolvate, [Fe(C44H28N4)(C5H5NO)][SbF6]·2CH2Cl2, was isolated and its crystal structure determined in the space group P. The porphyrin core is moderately saddled and the Fe—O—N bond angle is 122.08 (13)°. The average Fe—N bond length is 2.03 Å and the Fe—ONC5H5 bond length is 1.9500 (14) Å. This complex provides a rare example of a five‐coordinate iron(III) porphyrin complex that is coordinated to a neutral organic ligand through an O‐monodentate binding mode. 相似文献
14.
Three dinuclear copper(I) complexes, [Cu2(µ‐Cl)2(1,2‐(PPh2)2‐1,2‐C2B10H10)2]·2CH2Cl2 ( 1 ), [Cu2(µ‐Br)2(1,2‐(PPh2)2‐1,2‐C2B10H10)2]·2THF ( 2 ) and {Cu2(µ‐I)2[1,2‐(PPh2)2‐1,2‐C2B10H10]2} ( 3 ) have been synthesized by the reactions of CuX (X = Cl, Br and I) with the closo ligand 1,2‐(PPh2)2‐1,2‐C2B10H10. All these complexes were characterized by elemental analysis, FT‐IR, 1H and 13C NMR spectroscopy and X‐ray structure determination. Single crystal X‐ray structure determinations show that every complex contained di‐µ‐X‐bridged structure involving a crossed parallelogram plane formed by two Cu atoms and two X atoms (X = Cl, Br, I). The geometry at the Cu atom was a distorted tetrahedron, in which two positions were occupied by two P atoms of the PPh2 groups connected to the two C atoms of carborane (Cc), and the other two resulted from two X atoms which bridged the other Cu atom at the same time. To the best of our knowledge, this is the first example of copper(I) complexes with 1,2‐diphenylphosphino‐1,2‐dicarba‐closo‐dodecaborane as ligand characterized by X‐ray diffraction. The catalytic property of the complex 3 for the amination of iodobenzene with aniline was also investigated. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
15.
Tomislav Fri
i Alan J. Lough George Ferguson Branko Kaitner 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(5):m313-m315
The title dimeric complex, bis{μ‐2,2′‐[hexane‐1,6‐diylbis(nitrilomethylidyne)]diphenolato‐1:2κ4O,N:N′,O′}dicopper(II),[Cu2(C20H22N2O2)2], has been investigated by single‐crystal X‐ray diffraction, by thermogravimetric analysis and differential scanning calorimetry, and also by FT–IR spectroscopy. Different synthetic and crystallization procedures gave crystals which were quite different in appearance, and it was initially thought that these were different polymorphic forms. Subsequent structure determination showed, in fact, serendipitous preparation of crystals in the P41 space group by one method and in space group P43 by the other. In these enantiomorphic structures, the Cu atoms have a distorted flattened tetrahedral coordination, with Cu—N and Cu—O distances in the ranges 1.954 (4)–1.983 (4) and 1.887 (4)–1.903 (4) Å, respectively. 相似文献
16.
Soumya Basu Basab Chattopadhyay A. Ganguly P. Chakraborty P. Roy Chowdhury S. Samanta M. Mukherjee A. K. Mukherjee S. K. Choudhuri 《应用有机金属化学》2009,23(12):527-534
A mononuclear copper (II) complex of N‐2‐hydroxyhippuric acid (2HHA), [Cu(HA)(H2O)2], has been synthesized and characterized by spectroscopic and X‐ray powder diffraction studies. Crystal structure of [Cu(HA)(H2O)2] reveals a distorted square‐pyramidal geometry around the metal center. The crystal packing in the complex exhibits a three‐dimensional framework formed by intermolecular O? ; H···O and C? H···O hydrogen bonds. Toxicity and antitumor properties of the complex have been studied in vivo. The complex, capable of depleting glutathione (GSH) at nontoxic doses, may be utilized to sensitize drug‐resistant cells where resistance is due to an elevated level of GSH. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
17.
Alex S. Ionkin William J. Marshall Douglas J. Adelman Aaron L. Shoe Rupert E. Spence Tuyu Xie 《Journal of polymer science. Part A, Polymer chemistry》2006,44(8):2615-2635
A new series of nitro‐substituted bis(imino)pyridine ligands {2,6‐bis[1‐(2‐methyl‐4‐nitrophenylimino)ethyl]pyridine, 2,6‐bis[1‐(4‐nitrophenylimino)ethyl]pyridine, (1‐{6‐[1‐(4‐nitro‐phenylimino)‐ethyl]‐pyridin‐2‐yl}‐ethylidene)‐(2,4,6‐trimethyl‐phenyl)‐amine, and 2,6‐bis[1‐(2‐methyl‐3‐nitrophenylimino)ethyl]pyridine} and their corresponding Fe(II) complexes [{p‐NO2? o‐Me? Ph? N?C(Me)? Py? C(Me)?N? Ph? o‐ Me? p‐NO2}FeCl2 ( 10 ), L2FeCl2 ( 11 ), {m‐NO2? o‐Me? Ph? N?C(Me)? Py? C(Me)?N? Ph? o‐Me? m‐NO2}FeCl2 ( 12 ), and {p‐NO2? Ph? N?C(Me)? Py? C(Me)?N? Mes}FeCl2 ( 14 )] were synthesized. According to X‐ray analysis, there were shortenings of the axial Fe? N bond lengths (up to 0.014 Å) in para‐nitro‐substituted complex 10 and (up to 0.015 Å) in meta‐nitro‐substituted complex 12 versus the Fe(II) complex without nitro groups [{o‐Me? Ph? N?C(Me)? Py? C(Me)?N? Ph? o‐Me}FeCl2 ( 1 )]. Complexes 10 , 12 , and 14 afforded very active catalysts for the production of α‐olefins and were more temperature‐stable and had longer lifetimes than parent non‐nitro‐substituted Fe(II) complex 1 . The reaction between FeCl2 and a sterically less hindered ligand [p‐NO2? Ph? N?C(Me)? Py? C(Me)?N? Ph? p‐NO2] resulted in the formation of octahedral complex 11 . A para‐dialkylamino‐substituted bis(imino)pyridine ligand [p‐NEt2? o‐Me? Ph? N?C(Me)? Py? C(Me)?N? Ph? o‐Me? p‐NEt2] and the corresponding Fe(II) complex [{p‐NEt2? o‐Me? Ph? N?C(Me)? Py? C(Me)?N? Ph? o‐Me? p‐NEt2}FeCl2 ( 16 )] were synthesized to evaluate the effect of enhanced electron donation of the ligand on the catalytic performance. According to X‐ray analysis, there was a shortening (up to 0.043 Å) of the axial Fe? N bond lengths in para‐diethylamino‐substituted complex 16 in comparison with parent Fe(II) complex 1 . © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 2615–2635, 2006 相似文献
18.
Yoshio Wada Nobuo Okabe Yasunori Muranishi 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(10):m511-m513
In trans‐bis(5‐n‐butylpyridine‐2‐carboxylato‐κ2N,O)bis(methanol‐κO)copper(II), [Cu(C10H12NO2)2(CH4O)2], the Cu atom lies on a centre of symmetry and has a distorted octahedral coordination. The Cu—O(methanol) bond length in the axial direction is 2.596 (3) Å, which is much longer than the Cu—O(carboxylate) and Cu—N distances in the equatorial plane [1.952 (2) and 1.977 (2) Å, respectively]. In mer‐tris(5‐n‐butylpyridine‐2‐carboxylato‐κ2N,O)iron(III), [Fe(C10H12NO2)3], the Fe atom also has a distorted octahedral geometry, with Fe—O and Fe—N bond‐length ranges of 1.949 (4)–1.970 (4) and 2.116 (5)–2.161 (5) Å, respectively. Both crystals are stabilized by stacking interactions of the 5‐n‐butylpyridine‐2‐carboxylate ligand, although hydrogen bonds also contribute to the stabilization of the copper(II) complex. 相似文献
19.
[RhIII(Cp*)]‐Catalyzed ortho‐Selective Direct C(sp2)H Bond Amidation/Amination of Benzoic Acids by N‐Chlorocarbamates and N‐Chloromorpholines. A Versatile Synthesis of Functionalized Anthranilic Acids
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Fo‐Ning Ng Prof. Dr. Zhongyuan Zhou Prof. Dr. Wing‐Yiu Yu 《Chemistry (Weinheim an der Bergstrasse, Germany)》2014,20(15):4474-4480
A RhIII‐catalyzed direct ortho‐C?H amidation/amination of benzoic acids with N‐chlorocarbamates/N‐chloromorpholines was achieved, giving anthranilic acids in up to 85 % yields with excellent ortho‐selectivity and functional‐group tolerance. Successful benzoic acid aminations were achieved with carbamates bearing various amide groups including NHCO2Me, NHCbz, and NHTroc (Cbz=carbobenzyloxy; Troc=trichloroethylchloroformate), as well as secondary amines, such as morpholines, piperizines, and piperidines, furnishing highly functionalized anthranilic acids. A stoichiometric reaction of a cyclometallated rhodium(III) complex of benzo[h]quinoline with a silver salt of N‐chlorocarbamate afforded an amido–rhodium(III) complex, which was isolated and structurally characterized by X‐ray crystallography. This finding confirmed that the C?N bond formation results from the cross‐coupling of N‐chlorocarbamate with the aryl–rhodium(III) complex. Yet, the mechanistic details regarding the C?N bond formation remain unclear; pathways involving 1,2‐aryl migration and rhodium(V)– nitrene are plausible. 相似文献