Co-reporter:Xiaotian Qi;Zhen He;Junbin Tang;Zhijie She;Shiqing Li;Yinsong Zhao;Yu Lan;Jingsong You
The Journal of Organic Chemistry February 3, 2017 Volume 82(Issue 3) pp:1403-1411
Publication Date(Web):January 4, 2017
DOI:10.1021/acs.joc.6b02575
A transition-metal-free and room-temperature coupling/decarboxylation reaction between α-oxocarboxylates and α-bromoketones is reported herein. It represents the first mild and regioselective synthesis of either 1,2- or 1,3-diketones from the same starting materials. Notably, the regioselectivity is simply controlled by solvents. The preliminary experimental data and DFT calculations suggest sequential Darzens-type coupling, alkaline hydrolysis, KOH-promoted oxirane opening and decarboxylation in one pot. This method is efficient for the synthesis of α,β-epoxy-γ-butyrolactone and curcuminoids.
Co-reporter:Junbin Tang, Shiqing Li, Zheng Liu, Yinsong Zhao, Zhijie She, Vilas D. Kadam, Ge GaoJingbo Lan, Jingsong You
Organic Letters 2017 Volume 19(Issue 3) pp:
Publication Date(Web):January 19, 2017
DOI:10.1021/acs.orglett.6b03772
A cascade double C–H annulation of aldoximes with alkynes to produce benz[a]acridizinium salts is developed by using a simple catalytic system of [Cp*Rh(OAc)2]2 in the presence of Zn(OTf)2 with oxygen as the sole oxidant. In addition, the challenging C–H annulation of aldoximes with alkynes, especially arylalkynes, to synthesize 1H-isoquinolines is also achieved under slightly modified conditions. This protocol provides an efficient one-pot access to multisubstituted dehydroberberinium skeletons from simple starting materials, which can be easily transformed into berberinium and tetrahydroberberine skeletons by controlled hydrogenation.
Co-reporter:Shiqing Li;Junbin Tang;Yinsong Zhao;Ruyong Jiang;Tianbao Wang;Jingsong You
Chemical Communications 2017 vol. 53(Issue 24) pp:3489-3492
Publication Date(Web):2017/03/21
DOI:10.1039/C7CC01076A
Herein the Cu-catalyzed direct C–H mono-, di- and triarylations of imidazolium salts with aryl iodides/bromides are accomplished for the first time. The unprecedented alkenylation and alkynylation are also realized using alkenyl and alkynyl iodides, respectively. Moreover, triarylated imidazolium salts with different substituents can be accessed in a modular and one-pot manner. This protocol provides an efficient tool for the assembly of diverse imidazolium-based ionic functional materials. As applicable examples, an electrochromic bisbenzimidazolium salt 7 and a photochromic triarylimidazolium salt 8 are easily obtained.
Co-reporter:Yangyang Cheng; Gaocan Li; Yang Liu; Yang Shi; Ge Gao; Di Wu; Jingbo Lan;Jingsong You
Journal of the American Chemical Society 2016 Volume 138(Issue 14) pp:4730-4738
Publication Date(Web):February 8, 2016
DOI:10.1021/jacs.5b09241
The development of straightforward accesses to organic functional materials through C–H activation is a revolutionary trend in organic synthesis. In this article, we propose a concise strategy to construct a large library of donor–acceptor-type biheteroaryl fluorophores via the palladium-catalyzed oxidative C–H/C–H cross-coupling of electron-deficient 2H-indazoles with electron-rich heteroarenes. The directly coupled biheteroaryl fluorophores, named Indazo-Fluors, exhibit continuously tunable full-color emissions with quantum yields up to 93% and large Stokes shifts up to 8705 cm–1 in CH2Cl2. By further fine-tuning of the substituent on the core skeleton, Indazo-Fluor 3l (FW = 274; λem = 725 nm) is obtained as the lowest molecular weight near-infrared (NIR) fluorophore with emission wavelength over 720 nm in the solid state. The NIR dye 5h specifically lights up mitochondria in living cells with bright red luminescence. Typically, commercially available mitochondria trackers suffer from poor photostability. Indazo-Fluor 5h exhibits superior photostability and very low cytotoxicity, which would be a prominent reagent for in vivo mitochondria imaging.
Co-reporter:Yinsong Zhao, Zhen He, Shiqing Li, Junbin Tang, Ge Gao, Jingbo Lan and Jingsong You
Chemical Communications 2016 vol. 52(Issue 25) pp:4613-4616
Publication Date(Web):12 Jan 2016
DOI:10.1039/C5CC10169G
An air-stable half-sandwich rutheniumII complex, [Ru(p-cymene)(MeCN)3](SbF6)2, was synthesized and characterized. It exhibited unique catalytic ability in a [3+2] annulation reaction of 2-arylcyclo-2-enones with internal alkynes via C(sp2)–H/alkene functionalization, which offered a rapid and atom-economical methodology to construct various synthetically challenging spiro carbocyclic indenes bearing a quaternary carbon.
Co-reporter:Boya Feng, Danyang Wan, Lipeng Yan, Vilas D. Kadam, Jingsong You and Ge Gao
RSC Advances 2016 vol. 6(Issue 71) pp:66407-66411
Publication Date(Web):07 Jul 2016
DOI:10.1039/C6RA15464F
Substituted cationic 12-azapyrene salts were conveniently synthesized by rhodium(III)-catalyzed C–H annulation of N-arylpyridinium salts with alkynes. The resultant substituted cationic 12-azapyrene salts showed tunable and intense fluorescent emission in solution as well as in the solid state.
Co-reporter:Dekun Qin, Jing Wang, Xurong Qin, Chunxia Wang, Ge Gao and Jingsong You
Chemical Communications 2015 vol. 51(Issue 28) pp:6190-6193
Publication Date(Web):02 Mar 2015
DOI:10.1039/C5CC00387C
A rhodium(III)-catalyzed dehydrogenative cross-coupling reaction has been developed for the synthesis of bi(hetero)aryl structures by using oxime ethers as the directing group. This protocol features a relatively broad substrate scope and a good tolerance of functional groups.
Co-reporter:Yuzhe Wu;Dong Cao;Fang Wang;Liang Ma;Lijuan Chen
Chemical Biology & Drug Design 2015 Volume 86( Issue 4) pp:559-567
Publication Date(Web):
DOI:10.1111/cbdd.12507
A series of amino acid derivatives of millepachine were designed, synthesized, and evaluated for their solubility and antiproliferation ability against tumor. The glycine derivative compound 7a exhibited the best potency and possessed long-term inhibitory capability on cell viability. It was also confirmed that 7a could arrest the cell cycle at G2/M phase and trigger apoptosis. Furthermore, indirect immunofluorescence staining revealed antitubulin property of 7a, which is consistent with the previously reported derivatives of millepachine. In vivo, 7a suppressed tumor growth in an MDA-MB-231 xenograft tumor model. In summary, the exploit of 7a was a successful approach directed by the concept of generating amino acid prodrugs with increased bioavailability.
Co-reporter:Zhen He;Xiaotian Qi;Shiqing Li;Yinsong Zhao;Dr. Ge Gao;Dr. Yu Lan;Yiwei Wu;Dr. Jingbo Lan;Dr. Jingsong You
Angewandte Chemie 2015 Volume 127( Issue 3) pp:869-873
Publication Date(Web):
DOI:10.1002/ange.201409361
Abstract
A transition-metal-free formal decarboxylative coupling reaction between α-oxocarboxylates and α-bromoketones to synthesize 1,3-diketone derivatives is presented. In this reaction, a broad scope of substrates can be employed, and neither a metal-based reagent nor an additional base is required. DFT calculations reveal that this reaction proceeds through a coupling followed by decarboxylation mechanism and the α-bromoketone unprecedentedly serves as a nucleophile under neutral conditions. The rate-determining step is an unusual hydrogen-bond-assisted enolate formation by thermolysis.
Co-reporter:Zhen He;Xiaotian Qi;Shiqing Li;Yinsong Zhao;Dr. Ge Gao;Dr. Yu Lan;Yiwei Wu;Dr. Jingbo Lan;Dr. Jingsong You
Angewandte Chemie International Edition 2015 Volume 54( Issue 3) pp:855-859
Publication Date(Web):
DOI:10.1002/anie.201409361
Abstract
A transition-metal-free formal decarboxylative coupling reaction between α-oxocarboxylates and α-bromoketones to synthesize 1,3-diketone derivatives is presented. In this reaction, a broad scope of substrates can be employed, and neither a metal-based reagent nor an additional base is required. DFT calculations reveal that this reaction proceeds through a coupling followed by decarboxylation mechanism and the α-bromoketone unprecedentedly serves as a nucleophile under neutral conditions. The rate-determining step is an unusual hydrogen-bond-assisted enolate formation by thermolysis.
Co-reporter:Shiqing Li, Fan Yang, Taiyong Lv, Jingbo Lan, Ge Gao and Jingsong You
Chemical Communications 2014 vol. 50(Issue 30) pp:3941-3943
Publication Date(Web):21 Feb 2014
DOI:10.1039/C4CC00474D
Imidazolium salts were conveniently prepared by direct aryl quaternization using arylboronic acids. This process features the tolerance of a broad range of functional groups and excellent chemoselectivity, and is especially effective for the synthesis of unsymmetrical imidazolium salts.
Co-reporter:Chao Gao, Ge Gao, Jingbo Lan and Jingsong You
Chemical Communications 2014 vol. 50(Issue 42) pp:5623-5625
Publication Date(Web):04 Apr 2014
DOI:10.1039/C4CC01821D
We disclose herein a monoimidazolium skeleton 1 with an aggregation-induced emission (AIE) characteristic. This fluorogenic skeleton exhibited high selectivity and fluorescence turn-on for H2PO4− in acetonitrile and ClO4− in water.
Co-reporter:Juan Li, Zhigang Wang, Ningjie Wu, Ge Gao and Jingsong You
Chemical Communications 2014 vol. 50(Issue 95) pp:15049-15051
Publication Date(Web):10 Oct 2014
DOI:10.1039/C4CC07667B
The cyanomethyl radical was easily generated from acetonitrile by using DTBP, which was applied to a cascade alkene addition and cyclization reaction to construct useful oxindole derivatives. This protocol features simple manipulation, cheap reagents and a broad substrate scope. In addition, nitro substituted oxindoles were also synthesized for the first time.
Co-reporter:Chengming Li, Chao Gao, Jingbo Lan, Jingsong You and Ge Gao
Organic & Biomolecular Chemistry 2014 vol. 12(Issue 47) pp:9524-9527
Publication Date(Web):10 Oct 2014
DOI:10.1039/C4OB01635A
A simple Y-shaped dimb with AIE properties was designed and synthesized. It showed selective fluorescence turn-on toward Cd2+ ion in MeCN–water (2:8, v/v) through aggregation, and also selective fluorescence turn-off toward Fe3+ ion in MeCN–water (1:99, v/v) through disaggregation.
Co-reporter:Hongjun Zhou ; Yinsong; Zhao ; Ge Gao ; Shiqing Li ; Jingbo Lan ;Jingsong You
Journal of the American Chemical Society 2013 Volume 135(Issue 40) pp:14908-14911
Publication Date(Web):September 6, 2013
DOI:10.1021/ja406638b
The reinforced molecular recognition of two rigid tetrakisimidazolium macrocycles resulted in highly selective fluorescent recognition of sulfate dianion in water with an unprecedentedly high association constant of 8.6 × 109 M–2. Besides the electrostatic interaction, the single crystal X-ray analysis revealed that sulfate was encapsulated in a pseudohexahedral cavity of a sandwich structure by two orthogonally packed macrocycles via eight hydrogen bonds between the C2 hydrogen atoms of the imidazolium units and the oxygen atoms of sulfate. This sandwich structure was reinforced by the π–π stacking between the phenyl and the triazinonide rings and multiple charge-assisted hydrogen bonds between the peripheral chains and the rigid backbones. Notably, these peripheral-backbone hydrogen bonds rendered the flexible peripheral chains to coil around the sandwich structure to shield sulfate inaccessible to water. This binding process was visible by fluorescence enhancement, which was attributed to a restrained rotation and better conjugation of the macrocycle backbone upon binding to sulfate.
Co-reporter:Chao Gao, Hongjun Zhou, Siping Wei, Yinsong Zhao, Jingsong You and Ge Gao
Chemical Communications 2013 vol. 49(Issue 11) pp:1127-1129
Publication Date(Web):17 Dec 2012
DOI:10.1039/C2CC36375E
A series of novel triazinonide-bridged bisimidazolium pincers were easily synthesized by quaternization of functionalized N-phenylimidazoles with highly reactive cyanuric chloride under mild conditions. The pincer 3c was proven to be a very efficient ligand for in situ Pd-catalyzed Suzuki–Miyaura reaction with ppm-level catalyst loading.
Co-reporter:Hongjun Zhou, Zhi Wang, Chao Gao, Jingsong You and Ge Gao
Chemical Communications 2013 vol. 49(Issue 18) pp:1832-1834
Publication Date(Web):18 Jan 2013
DOI:10.1039/C3CC38914F
A fully rigid tetrakisimidazolium macrocycle was synthesized in good yield for the first time through direct [2+2] cyclization. The structure was characterized by NMRs, MS and X-ray diffraction analysis. This cationic, fluorescent macrocycle with four hydrogen bond donors pointing inward the large and rigid cavity may serve as an anion receptor, a fluorescent material and a building block for supramolecular assembly.
Co-reporter:Tai-Yong Lv, Lei Yang, Yin-Song Zhao, Fei-Jie Song, Jing-Bo Lan, Jing-Song You, Ge Gao
Chinese Chemical Letters 2013 Volume 24(Issue 9) pp:773-776
Publication Date(Web):September 2013
DOI:10.1016/j.cclet.2013.05.038
Diarylimidazolium salts (3) were directly synthesized starting from 1H-imidazole (1) by a one-pot strategy using diaryliodonium salts as the arylating reagents. 1H-Benzimidazole and 1H-1,2,4-triazole are suitable substrates as well to form the corresponding diarylazolium salts.A one-pot strategy was reported for the synthesis of diarylimidazolium salts directly from 1H-imidazole.
Co-reporter:Junyi Hu, Zhen He, Zhi Wang, Xiaoyu Li, Jingsong You, Ge Gao
Tetrahedron Letters 2013 Volume 54(Issue 32) pp:4167-4170
Publication Date(Web):7 August 2013
DOI:10.1016/j.tetlet.2013.05.099
The first example of an AIE active BF2dbm derivative with a single dimethylamino group connecting to the phenyl ring was revealed. It also showed capability of sensing HCl gas both in solution and in the solid state.
Co-reporter:Taiyong Lv, Zhi Wang, Jingsong You, Jingbo Lan, and Ge Gao
The Journal of Organic Chemistry 2013 Volume 78(Issue 11) pp:5723-5730
Publication Date(Web):May 3, 2013
DOI:10.1021/jo400527r
Diaryliodonium salts are employed to directly quaternize N-substituted imidazoles by using a copper catalyst to construct aryl imidazolium salts in moderate to excellent yields. This transformation is tolerant to a broad range of functional groups and provides a straightforward, efficient, and versatile route to synthesize aryl imidazolium as well as triazolium salts, especially the unsymmetric version.
Co-reporter:Shuaijun Yang ; Jingsong You ; Jingbo Lan
Journal of the American Chemical Society 2012 Volume 134(Issue 29) pp:11868-11871
Publication Date(Web):June 29, 2012
DOI:10.1021/ja304082h
We have discovered that squaraine NCSQ easily react with ketones in the presence of ammonium acetate to form a novel type of squaraine CCSQ. It is interesting to find that NCSQs exhibit unusual solid-state fluorescence, whereas CCSQs only exhibit fluorescence in solution. The quantum yield of solid NCSQ-g is measured to be 0.36, which is the highest among solid squaraines found so far. The large spectral overlap between the emission of NCSQs and the absorption of CCSQs, and the structural similarity of these molecules make them excellent energy-transfer (ET) pairs, as exemplified by the ET pair of CCSQ-1/NCSQ-g. When a very small amount (0.05 mol%) of CCSQ-g is doped into NCSQ-g, the ET efficiency reaches up to 96%. The Stern–Volmer quenching constant KSV is calculated to be 65 800, indicating that CCSQ-1/NCSQ-g forms an extremely efficient ET pair. This study provides a novel skeleton and a facile route to efficient ET pairs.
Co-reporter:Liang Cheng;Jiaxing Dong;Jingsong You Dr., Dr. ;Jingbo Lan Dr.
Chemistry - A European Journal 2010 Volume 16( Issue 23) pp:6761-6765
Publication Date(Web):
DOI:10.1002/chem.201000650
Co-reporter:Ge Gao;Lin Pu
Science China Chemistry 2010 Volume 53( Issue 1) pp:21-35
Publication Date(Web):2010 January
DOI:10.1007/s11426-010-0023-1
γ-Hydroxy-α,β-acetylenic esters are versatile synthetic precursors to many organic compounds. This paper reviews the synthesis of chiral γ-hydroxy-α,β-acetylenic esters by asymmetric reduction of γ-oxo-α,β-acetylenic esters, enantioselective addition to aldehydes in the presence of chiral catalysts, and diastereoselective addition to chiral aldehydes. The preparation of racemic γ-hydroxy-α,β-acetylenic esters is also included. Examples are provided for the application of γ-hydroxy-α,β-acetylenic esters in organic synthesis.
Co-reporter:Shiqing Li, Junbin Tang, Yinsong Zhao, Ruyong Jiang, Tianbao Wang, Ge Gao and Jingsong You
Chemical Communications 2017 - vol. 53(Issue 24) pp:NaN3492-3492
Publication Date(Web):2017/03/03
DOI:10.1039/C7CC01076A
Herein the Cu-catalyzed direct C–H mono-, di- and triarylations of imidazolium salts with aryl iodides/bromides are accomplished for the first time. The unprecedented alkenylation and alkynylation are also realized using alkenyl and alkynyl iodides, respectively. Moreover, triarylated imidazolium salts with different substituents can be accessed in a modular and one-pot manner. This protocol provides an efficient tool for the assembly of diverse imidazolium-based ionic functional materials. As applicable examples, an electrochromic bisbenzimidazolium salt 7 and a photochromic triarylimidazolium salt 8 are easily obtained.
Co-reporter:Hongjun Zhou, Zhi Wang, Chao Gao, Jingsong You and Ge Gao
Chemical Communications 2013 - vol. 49(Issue 18) pp:NaN1834-1834
Publication Date(Web):2013/01/18
DOI:10.1039/C3CC38914F
A fully rigid tetrakisimidazolium macrocycle was synthesized in good yield for the first time through direct [2+2] cyclization. The structure was characterized by NMRs, MS and X-ray diffraction analysis. This cationic, fluorescent macrocycle with four hydrogen bond donors pointing inward the large and rigid cavity may serve as an anion receptor, a fluorescent material and a building block for supramolecular assembly.
Co-reporter:Juan Li, Zhigang Wang, Ningjie Wu, Ge Gao and Jingsong You
Chemical Communications 2014 - vol. 50(Issue 95) pp:NaN15051-15051
Publication Date(Web):2014/10/10
DOI:10.1039/C4CC07667B
The cyanomethyl radical was easily generated from acetonitrile by using DTBP, which was applied to a cascade alkene addition and cyclization reaction to construct useful oxindole derivatives. This protocol features simple manipulation, cheap reagents and a broad substrate scope. In addition, nitro substituted oxindoles were also synthesized for the first time.
Co-reporter:Chao Gao, Ge Gao, Jingbo Lan and Jingsong You
Chemical Communications 2014 - vol. 50(Issue 42) pp:NaN5625-5625
Publication Date(Web):2014/04/04
DOI:10.1039/C4CC01821D
We disclose herein a monoimidazolium skeleton 1 with an aggregation-induced emission (AIE) characteristic. This fluorogenic skeleton exhibited high selectivity and fluorescence turn-on for H2PO4− in acetonitrile and ClO4− in water.
Co-reporter:Yinsong Zhao, Zhen He, Shiqing Li, Junbin Tang, Ge Gao, Jingbo Lan and Jingsong You
Chemical Communications 2016 - vol. 52(Issue 25) pp:NaN4616-4616
Publication Date(Web):2016/01/12
DOI:10.1039/C5CC10169G
An air-stable half-sandwich rutheniumII complex, [Ru(p-cymene)(MeCN)3](SbF6)2, was synthesized and characterized. It exhibited unique catalytic ability in a [3+2] annulation reaction of 2-arylcyclo-2-enones with internal alkynes via C(sp2)–H/alkene functionalization, which offered a rapid and atom-economical methodology to construct various synthetically challenging spiro carbocyclic indenes bearing a quaternary carbon.
Co-reporter:Chao Gao, Hongjun Zhou, Siping Wei, Yinsong Zhao, Jingsong You and Ge Gao
Chemical Communications 2013 - vol. 49(Issue 11) pp:NaN1129-1129
Publication Date(Web):2012/12/17
DOI:10.1039/C2CC36375E
A series of novel triazinonide-bridged bisimidazolium pincers were easily synthesized by quaternization of functionalized N-phenylimidazoles with highly reactive cyanuric chloride under mild conditions. The pincer 3c was proven to be a very efficient ligand for in situ Pd-catalyzed Suzuki–Miyaura reaction with ppm-level catalyst loading.
Co-reporter:Shiqing Li, Fan Yang, Taiyong Lv, Jingbo Lan, Ge Gao and Jingsong You
Chemical Communications 2014 - vol. 50(Issue 30) pp:NaN3943-3943
Publication Date(Web):2014/02/21
DOI:10.1039/C4CC00474D
Imidazolium salts were conveniently prepared by direct aryl quaternization using arylboronic acids. This process features the tolerance of a broad range of functional groups and excellent chemoselectivity, and is especially effective for the synthesis of unsymmetrical imidazolium salts.
Co-reporter:Chengming Li, Chao Gao, Jingbo Lan, Jingsong You and Ge Gao
Organic & Biomolecular Chemistry 2014 - vol. 12(Issue 47) pp:NaN9527-9527
Publication Date(Web):2014/10/10
DOI:10.1039/C4OB01635A
A simple Y-shaped dimb with AIE properties was designed and synthesized. It showed selective fluorescence turn-on toward Cd2+ ion in MeCN–water (2:8, v/v) through aggregation, and also selective fluorescence turn-off toward Fe3+ ion in MeCN–water (1:99, v/v) through disaggregation.
Co-reporter:Dekun Qin, Jing Wang, Xurong Qin, Chunxia Wang, Ge Gao and Jingsong You
Chemical Communications 2015 - vol. 51(Issue 28) pp:NaN6193-6193
Publication Date(Web):2015/03/02
DOI:10.1039/C5CC00387C
A rhodium(III)-catalyzed dehydrogenative cross-coupling reaction has been developed for the synthesis of bi(hetero)aryl structures by using oxime ethers as the directing group. This protocol features a relatively broad substrate scope and a good tolerance of functional groups.
![Acetamide, N-[4-[(methoxyimino)methyl]phenyl]-, (E)-](/data/chemimg/1102500/140463-14-5.png)
![Acetamide, N-[4-[(methoxyimino)methyl]phenyl]-, (E)-](/data/chemimg/1102500/140463-14-5_b.png)
![2-Propanamine, N-[(2-methoxyphenyl)methylene]-2-methyl-, (E)-](http://img.cochemist.com/ccimg/120400/120347-55-9.png)
![2-Propanamine, N-[(2-methoxyphenyl)methylene]-2-methyl-, (E)-](http://img.cochemist.com/ccimg/120400/120347-55-9_b.png)
![Benzoic acid, 4-[1-(methoxyimino)ethyl]-, methyl ester](/data/chemimg/185100/1262134-28-0.png)
![Benzoic acid, 4-[1-(methoxyimino)ethyl]-, methyl ester](/data/chemimg/185100/1262134-28-0_b.png)
![1H-Imidazole, 1-[(1R)-1-phenylethyl]-](http://img.cochemist.com/ccimg/844700/844658-92-0.png)
![1H-Imidazole, 1-[(1R)-1-phenylethyl]-](http://img.cochemist.com/ccimg/844700/844658-92-0_b.png)
![Benzoic acid, 4-[methyl(2-methyl-1-oxo-2-propenyl)amino]-, ethyl ester](http://img.cochemist.com/ccimg/294700/294642-82-3.png)
![Benzoic acid, 4-[methyl(2-methyl-1-oxo-2-propenyl)amino]-, ethyl ester](http://img.cochemist.com/ccimg/294700/294642-82-3_b.png)
![1,3-Propanedione, 1-phenyl-3-[4-(trifluoromethyl)phenyl]-](http://img.cochemist.com/ccimg/129800/129700-38-5.png)
![1,3-Propanedione, 1-phenyl-3-[4-(trifluoromethyl)phenyl]-](http://img.cochemist.com/ccimg/129800/129700-38-5_b.png)
![1H-Imidazole, 1-[2,6-bis(1-methylethyl)phenyl]-](http://img.cochemist.com/ccimg/25400/25364-47-0.png)
![1H-Imidazole, 1-[2,6-bis(1-methylethyl)phenyl]-](http://img.cochemist.com/ccimg/25400/25364-47-0_b.png)
![Bis[(pentamethylcyclopentadienyl)dichloro-rhodium]](http://img.cochemist.com/ccimg/12400/12354-85-7.png)
![Bis[(pentamethylcyclopentadienyl)dichloro-rhodium]](http://img.cochemist.com/ccimg/12400/12354-85-7_b.png)
![6-BROMO-2,3-DIHYDROIMIDAZO[1,2-A]PYRIDINE](http://img.cochemist.com/ccimg/3700/3682-71-1.png)
![6-BROMO-2,3-DIHYDROIMIDAZO[1,2-A]PYRIDINE](http://img.cochemist.com/ccimg/3700/3682-71-1_b.png)
