1
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Yu HY, Lee HK, Chan KS. Acylation of Rhodium(III) Porphyrin Complexes with Carboxylic Acids: Scope and Mechanism. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ho Yin Yu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People’s Republic of China
| | - Hung Kay Lee
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People’s Republic of China
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2
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Fujita D, Sugimoto H, Itoh S. C(sp 2)–H Iodination by a Rhodium(III) Complex Supported by a Redox-active Ligand Bearing Amidophenolato Moieties. CHEM LETT 2020. [DOI: 10.1246/cl.200178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Daiki Fujita
- Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hideki Sugimoto
- Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shinobu Itoh
- Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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3
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Thompson SJ, Brennan MR, Lee SY, Dong G. Synthesis and applications of rhodium porphyrin complexes. Chem Soc Rev 2018; 47:929-981. [DOI: 10.1039/c7cs00582b] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A review on rhodium porphyrin chemistry, ranging from synthesis and properties to reactivity and application.
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Affiliation(s)
| | | | - Siu Yin Lee
- Department of Chemistry, University of Chicago
- Chicago
- USA
| | - Guangbin Dong
- Department of Chemistry, University of Chicago
- Chicago
- USA
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4
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To CT, Chan KS. Selective Aliphatic Carbon-Carbon Bond Activation by Rhodium Porphyrin Complexes. Acc Chem Res 2017; 50:1702-1711. [PMID: 28609611 DOI: 10.1021/acs.accounts.7b00150] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The carbon-carbon bond activation of organic molecules with transition metal complexes is an attractive transformation. These reactions form transition metal-carbon bonded intermediates, which contribute to fundamental understanding in organometallic chemistry. Alternatively, the metal-carbon bond in these intermediates can be further functionalized to construct new carbon-(hetero)atom bonds. This methodology promotes the concept that the carbon-carbon bond acts as a functional group, although carbon-carbon bonds are kinetically inert. In the past few decades, numerous efforts have been made to overcome the chemo-, regio- and, more recently, stereoselectivity obstacles. The synthetic usefulness of the selective carbon-carbon bond activation has been significantly expanded and is becoming increasingly practical: this technique covers a wide range of substrate scopes and transition metals. In the past 16 years, our laboratory has shown that rhodium porphyrin complexes effectively mediate the intermolecular stoichiometric and catalytic activation of both strained and nonstrained aliphatic carbon-carbon bonds. Rhodium(II) porphyrin metalloradicals readily activate the aliphatic carbon(sp3)-carbon(sp3) bond in TEMPO ((2,2,6,6-tetramethylpiperidin-1-yl)oxyl) and its derivatives, nitriles, nonenolizable ketones, esters, and amides to produce rhodium(III) porphyrin alkyls. Recently, the cleavage of carbon-carbon σ-bonds in unfunctionalized and noncoordinating hydrocarbons with rhodium(II) porphyrin metalloradicals has been developed. The absence of carbon-hydrogen bond activation in these systems makes the reaction unique. Furthermore, rhodium(III) porphyrin hydroxide complexes can be generated in situ to selectively activate the carbon(α)-carbon(β) bond in ethers and the carbon(CO)-carbon(α) bond in ketones under mild conditions. The addition of PPh3 promotes the reaction rate and yield of the carbon-carbon bond activation product. Thus, both rhodium(II) porphyrin metalloradical and rhodium(III) porphyrin hydroxide are very reactive to activate the aliphatic carbon-carbon bonds. Recently, we successfully demonstrated the rhodium porphyrin catalyzed reduction or oxidation of aliphatic carbon-carbon bonds using water as the reductant or oxidant, respectively, in the absence of sacrificial reagents and neutral conditions. This Account presents our contribution in this domain. First, we describe the chemistry of equilibria among the reactive rhodium porphyrin complexes in oxidation states from Rh(I) to Rh(III). Then, we present the serendipitous discovery of the carbon-carbon bond activation reaction and subsequent developments in our laboratory. These aliphatic carbon-carbon bond activation reactions can generally be divided into two categories according to the reaction type: (i) homolytic radical substitution of a carbon(sp3)-carbon(sp3) bond with a rhodium(II) porphyrin metalloradical and (ii) σ-bond metathesis of a carbon-carbon bond with a rhodium(III) porphyrin hydroxide. Finally, representative examples of catalytic carbon-carbon bond hydrogenation and oxidation through strategic design are covered. The progress in this area broadens the chemistry of rhodium porphyrin complexes, and these transformations are expected to find applications in organic synthesis.
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Affiliation(s)
- Ching Tat To
- Department of Chemistry, The Chinese University of Hong Kong,
Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong,
Shatin, New Territories, Hong Kong, People’s Republic of China
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5
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Chen T, Liu P, Lee H, Wu F, Chen KH‐C. Cyclometalated Iridium(III) Complexes with Ligand Effects on the Catalytic C–H Bond Activation of Toluene. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601548] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tsun‐Ren Chen
- Department of Applied Chemistry National Pingtung University No. 4–18, Minsheng Rd. 90003 Pingtung City Pingtung County Taiwan
| | - Pei‐Chun Liu
- Department of Applied Chemistry National Pingtung University No. 4–18, Minsheng Rd. 90003 Pingtung City Pingtung County Taiwan
| | - Hsiu‐Pen Lee
- Department of Applied Chemistry National Pingtung University No. 4–18, Minsheng Rd. 90003 Pingtung City Pingtung County Taiwan
| | - Fang‐Siou Wu
- Department of Applied Chemistry National Pingtung University No. 4–18, Minsheng Rd. 90003 Pingtung City Pingtung County Taiwan
| | - Kelvin H. ‐C. Chen
- Department of Applied Chemistry National Pingtung University No. 4–18, Minsheng Rd. 90003 Pingtung City Pingtung County Taiwan
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Yang W, Zhang H, Li L, Tam CM, Feng S, Wong KL, Lai WY, Ng SH, Chen C, Chan KS. Base-Promoted, Aerobic, and Regioselective Carbon–Hydrogen Bond Activation of Thiophene with Group 9 Metalloporphyrins. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00490] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wu Yang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
| | - Haojie Zhang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
| | - Liuxiao Li
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
| | - Chun Meng Tam
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
| | - Shiyu Feng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
| | - Ka Lai Wong
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
| | - Wai Yan Lai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
| | - Sheung Hei Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
| | - Chen Chen
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, People’s Republic of China
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7
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Liu X, Wang Z, Fu X. Light induced catalytic intramolecular hydrofunctionalization of allylphenols mediated by porphyrin rhodium(iii) complexes. Dalton Trans 2016; 45:13308-10. [PMID: 27482840 DOI: 10.1039/c6dt01653g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic intramolecular hydrofunctionalization of allylphenols to heterocyclic compounds mediated by rhodium(iii) porphyrin complexes was described. The Wacker-type intermediate β-heterocyclic alkyl rhodium complex was independently synthesized and crystallized.
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Affiliation(s)
- Xu Liu
- Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare EarthMaterials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
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8
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Zuo H, Liu Z, Yang W, Zhou Z, Chan KS. User-friendly aerobic reductive alkylation of iridium(III) porphyrin chloride with potassium hydroxide: scope and mechanism. Dalton Trans 2015; 44:20618-25. [PMID: 26563412 DOI: 10.1039/c5dt03845f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkylation of iridium 5,10,15,20-tetrakistolylporphyrinato carbonyl chloride, Ir(ttp)Cl(CO) (1), with 1°, 2° alkyl halides was achieved to give (ttp)Ir-alkyls in good yields under air and water compatible conditions by utilizing KOH as the cheap reducing agent. The reaction rate followed the order: RCl < RBr < RI (R = alkyl), and suggests an SN2 pathway by [Ir(I)(ttp)](-). Ir(ttp)-adamantyl was obtained under N2 when 1-bromoadamantane was utilized, which could only undergo bromine atom transfer pathway. Mechanistic investigations reveal a substrate dependent pathway of SN2 or halogen atom transfer.
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Affiliation(s)
- Huiping Zuo
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People's Republic of China.
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9
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Yang W, Zuo H, Lai WY, Feng S, Pang YS, Hung KE, Yu CY, Lau YF, Tsoi HY, Chan KS. Facile Aerobic Alkylation of Rhodium Porphyrins with Alkyl Halides. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00488] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wu Yang
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Huiping Zuo
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Wai Yan Lai
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Shiyu Feng
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Yat Sing Pang
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kai En Hung
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Chu Yi Yu
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Yin Fan Lau
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Ho Yin Tsoi
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
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Affiliation(s)
- Leah M. Stateman
- Department
of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - Gregory M. Ferrence
- Department
of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
| | - Timothy D. Lash
- Department
of Chemistry, Illinois State University, Normal, Illinois 61790-4160, United States
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11
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Chan YW, de Bruin B, Chan KS. Metalloradical-Catalyzed Selective 1,2-Rh-H Insertion into the Aliphatic Carbon–Carbon Bond of Cyclooctane. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00183] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yun Wai Chan
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New
Territories, Hong Kong, People’s Republic of China
| | - Bas de Bruin
- Van’t
Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Kin Shing Chan
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New
Territories, Hong Kong, People’s Republic of China
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12
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Thompson SJ, Dong G. Alkylation of Rhodium Porphyrins Using Ammonium and Quinolinium Salts. Organometallics 2014. [DOI: 10.1021/om500438s] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Samuel J. Thompson
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Guangbin Dong
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
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13
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Chan KS, Chan YW. K2CO3-Promoted Consecutive Carbon–Hydrogen and Carbon–Carbon Bond Activation of Cycloheptane with Rhodium(III) Porphyrin Complexes: Formation of Rhodium Porphyrin Cycloheptyl and Benzyl. Organometallics 2014. [DOI: 10.1021/om500313g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kin Shing Chan
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Yun Wai Chan
- Department
of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
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14
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Bichan N, Tyulyaeva E, Khodov I, Lomova T. Synthesis and spectroscopic characterization of super-stable rhenium(V)porphyrins. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2013.12.074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Choi KS, Chiu PF, Chan CS, Chan KS. Base‐Promoted Selective Activation of Benzylic Carbon‐Hydrogen Bonds of Toluenes with Rhodium(III) Porphyrin Chloride: Synthetic Scopes and Mechanism. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201200635] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kwong Shing Choi
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
| | - Peng Fai Chiu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
| | - Chung Sum Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China
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16
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Bhagan S, Imler GH, Wayland BB. Iridium porphyrins in CD3OD: reduction of Ir(III), CD3-OD bond cleavage, Ir-D acid dissociation and alkene reactions. Inorg Chem 2013; 52:4611-7. [PMID: 23540797 DOI: 10.1021/ic400240b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Methanol solutions of iridium(III) tetra(p-sulfonatophenyl)porphyrin [(TSPP)Ir(III)] form an equilibrium distribution of methanol and methoxide complexes ([(TSPP)Ir(III)(CD3OD)(2-n)(OCD3)n]((3+n)-)). Reaction of [(TSPP)Ir(III) with dihydrogen (D2) in methanol produces an iridium hydride [(TSPP)Ir(III)-D(CD3OD)](4-) in equilibrium with an iridium(I) complex ([(TSPP)Ir(I)(CD3OD)](5-)). The acid dissociation constant of the iridium hydride (Ir-D) in methanol at 298 K is 3.5 × 10(-12). The iridium(I) complex ([(TSPP)Ir(I)(CD3OD)](5-)) catalyzes reaction of [(TSPP)Ir(III)-D(CD3OD)](4-) with CD3-OD to produce an iridium methyl complex [(TSPP)Ir(III)-CD3(CD3OD)](4-) and D2O. Reactions of the iridium hydride with ethene and propene produce iridium alkyl complexes, but the Ir-D complex fails to give observable addition with acetaldehyde and carbon monoxide in methanol. Reaction of the iridium hydride with propene forms both the isopropyl and propyl complexes with free energy changes (ΔG° 298 K) of -1.3 and -0.4 kcal mol(-1) respectively. Equilibrium thermodynamics and reactivity studies are used in discussing relative Ir-D, Ir-OCD3 and Ir-CD2- bond energetics in methanol.
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Affiliation(s)
- Salome Bhagan
- Temple University, Department of Chemistry, 130 Beury Hall, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
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18
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Bhagan S, Wayland BB. Formation and Reactivity of a Porphyrin Iridium Hydride in Water: Acid Dissociation Constants and Equilibrium Thermodynamics Relevant to Ir–H, Ir–OH, and Ir–CH2– Bond Dissociation Energetics. Inorg Chem 2011; 50:11011-20. [DOI: 10.1021/ic201553k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Salome Bhagan
- Department of Chemistry, Temple University, 130 Beury Hall, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Bradford B. Wayland
- Department of Chemistry, Temple University, 130 Beury Hall, 1901 North 13th Street, Philadelphia, Pennsylvania 19122, United States
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Yu M, Fu X. Visible Light Promoted Hydroxylation of a Si–C(sp3) Bond Catalyzed by Rhodium Porphyrins in Water. J Am Chem Soc 2011; 133:15926-9. [DOI: 10.1021/ja207468n] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Mengmeng Yu
- Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xuefeng Fu
- Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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Cheung CW, Chan KS. Base-Promoted Selective Aryl C–Cl Cleavage by Iridium(III) Porphyrins via a Metalloradical Ipso Addition–Elimination Mechanism. Organometallics 2011. [DOI: 10.1021/om200618m] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chi Wai Cheung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People’s Republic of China
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21
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Cheung CW, Chan KS. Base-Promoted Selective Aryl C–Br and C–I Bond Cleavage by Iridium(III) Porphyrin: Reduction of IrIII–OH to IrII for Metalloradical Ipso Substitution of Aryl–Halogen Bonds. Organometallics 2011. [DOI: 10.1021/om200251k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chi Wai Cheung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People’s Republic of China
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22
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Choi KS, Lai TH, Lee SY, Chan KS. Reduction of Rhodium(III) Porphyrin Hydroxide to Rhodium(II) Porphyrin. Organometallics 2011. [DOI: 10.1021/om200075f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kwong Shing Choi
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Tsz Ho Lai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Siu Yin Lee
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
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23
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Cheung CW, Chan KS. Base-Promoted Selective Aryl Carbon−Bromine Bond Cleavage by Iridium(III) Porphyrin for Iridium(III) Porphyrin Aryl Synthesis: A Metalloradical Ipso Addition−Elimination Mechanism. Organometallics 2011. [DOI: 10.1021/om200027q] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chi Wai Cheung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, People’s Republic of China
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24
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Chan YW, Chan KS. Metalloradical-catalyzed rearrangement of cycloheptatrienyl to benzyl. Chem Commun (Camb) 2011; 47:4802-4. [DOI: 10.1039/c0cc04655h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Chan YW, Chan KS. Metalloradical-Catalyzed Aliphatic Carbon−Carbon Activation of Cyclooctane. J Am Chem Soc 2010; 132:6920-2. [DOI: 10.1021/ja101586w] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Yun Wai Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, The People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, The People’s Republic of China
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27
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Cheung CW, Fung HS, Lee SY, Qian YY, Chan YW, Chan KS. Reactivity Studies of Iridium(III) Porphyrins with Methanol in Alkaline Media. Organometallics 2010. [DOI: 10.1021/om9008668] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chi Wai Cheung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Hong Sang Fung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Siu Yin Lee
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Ying Ying Qian
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Yun Wai Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
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Choi KS, Chiu PF, Chan KS. Selective Activation of Benzylic Carbon−Hydrogen Bonds of Toluenes with Rhodium(III) Porphyrin Methyl: Scope and Mechanism. Organometallics 2010. [DOI: 10.1021/om9009119] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kwong Shing Choi
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Peng Fai Chiu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
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Lai TH, Chan KS. Base-Promoted, Selective Aliphatic Carbon−Carbon Bond Cleavage of Ethers by Rhodium(III) Porphyrin Complexes. Organometallics 2009. [DOI: 10.1021/om900270v] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tsz Ho Lai
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
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Fung HS, Chan YW, Cheung CW, Choi KS, Lee SY, Qian YY, Chan KS. Reactivity Studies of Rhodium(III) Porphyrins with Methanol in Alkaline Media. Organometallics 2009. [DOI: 10.1021/om801029k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hong Sang Fung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Yun Wai Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Chi Wai Cheung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kwong Shing Choi
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Siu Yin Lee
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Ying Ying Qian
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
| | - Kin Shing Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People’s Republic of China
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