101
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Kweon J, Chang S. Highly Robust Iron Catalyst System for Intramolecular C(sp
3
)−H Amidation Leading to γ‐Lactams. Angew Chem Int Ed Engl 2020; 60:2909-2914. [DOI: 10.1002/anie.202013499] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Indexed: 01/07/2023]
Affiliation(s)
- Jeonguk Kweon
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Sukbok Chang
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
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102
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Zhang Y, Lin Z, Ackermann L. Electrochemical C-H Amidation of Heteroarenes with N-Alkyl Sulfonamides in Aqueous Medium. Chemistry 2020; 27:242-246. [PMID: 33085807 PMCID: PMC7898600 DOI: 10.1002/chem.202004229] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/20/2020] [Indexed: 12/12/2022]
Abstract
The construction of C-N bonds by free radical reactions represents a powerful synthetic approach for direct C-H amidations of arenes or heteroarenes. Developing efficient and more environmentally friendly synthetic methods for C-H amidation reactions remains highly desirable. Herein, metal-free electrochemical oxidative dehydrogenative C-H amidations of heteroarenes with N-alkylsulfonamides have been accomplished. The catalyst- and chemical-oxidant-free C-H amidation features an ample scope and employs electricity as the green and sole oxidant. A variety of heteroarenes, including indoles, pyrroles, benzofuran and benzothiophene, thereby underwent this C(sp2 )-H nitrogenation. Cyclic voltammetry studies and control experiments provided evidence for nitrogen-centered radicals being directly generated under metal-free electrocatalysis.
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Affiliation(s)
- Yan Zhang
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany.,Key Laboratory of the Ministry of Education for Advanced, Catalysis Materials, Zhejiang Normal University, Yingbin Road 688, 321004, Jinhua, P. R. China
| | - Zhipeng Lin
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
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103
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Davies TQ, Tilby MJ, Skolc D, Hall A, Willis MC. Primary Sulfonamide Synthesis Using the Sulfinylamine Reagent N-Sulfinyl- O-( tert-butyl)hydroxylamine, t-BuONSO. Org Lett 2020; 22:9495-9499. [PMID: 33237777 PMCID: PMC7754190 DOI: 10.1021/acs.orglett.0c03505] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
![]()
Sulfonamides
have played a defining role in the history of drug
development and continue to be prevalent today. In particular, primary
sulfonamides are common in marketed drugs. Here we describe the direct
synthesis of these valuable compounds from organometallic reagents
and a novel sulfinylamine reagent, t-BuONSO. A variety
of (hetero)aryl and alkyl Grignard and organolithium reagents perform
well in the reaction, providing primary sulfonamides in good to excellent
yields in a convenient one-step process.
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Affiliation(s)
- Thomas Q Davies
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Michael J Tilby
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
| | - David Skolc
- UCB, Chemin du Foriest, Braine-l'Alleud, Belgium
| | - Adrian Hall
- UCB, Chemin du Foriest, Braine-l'Alleud, Belgium
| | - Michael C Willis
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
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104
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Noda H, Asada Y, Shibasaki M. O-Benzoylhydroxylamines as Alkyl Nitrene Precursors: Synthesis of Saturated N-Heterocycles from Primary Amines. Org Lett 2020; 22:8769-8773. [PMID: 32914633 DOI: 10.1021/acs.orglett.0c02842] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We introduce O-benzoylhydroxylamines as competent alkyl nitrene precursors. The combination of readily available, stable substrates and a proficient rhodium catalyst provides a straightforward means for the construction of various pyrrolidine rings from the corresponding primary amines. Preliminary mechanistic investigation suggests that the structure of the nitrene precursor plays a role in determining the nature of the resulting reactive intermediate.
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Affiliation(s)
- Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Yasuko Asada
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo, 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
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105
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Zhang S, Yamamoto Y, Bao M. Benzyl Palladium Intermediates: Unique and Versatile Reactive Intermediates for Aromatic Functionalization. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000838] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Sheng Zhang
- State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116023 People's Republic of China
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116023 People's Republic of China
- Department of Chemistry Graduate School of Science Tohoku University Sendai 980-8578
- Japan Research Organization of Science and Technology Ritsumeikan University Kusatsu Shiga 525-8577 Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116023 People's Republic of China
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106
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Harada S, Kobayashi M, Kono M, Nemoto T. Site-Selective and Chemoselective C–H Functionalization for the Synthesis of Spiroaminals via a Silver-Catalyzed Nitrene Transfer Reaction. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04057] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shingo Harada
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Mayu Kobayashi
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Masato Kono
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
- Molecular Chirality Research Center, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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107
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Powers IG, Andjaba JM, Zeller M, Uyeda C. Catalytic C(sp2)–H Amination Reactions Using Dinickel Imides. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00504] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ian G. Powers
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - John M. Andjaba
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Matthias Zeller
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Christopher Uyeda
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
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108
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Cheng Q, Chen J, Lin S, Ritter T. Allylic Amination of Alkenes with Iminothianthrenes to Afford Alkyl Allylamines. J Am Chem Soc 2020; 142:17287-17293. [PMID: 33001638 PMCID: PMC7584367 DOI: 10.1021/jacs.0c08248] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Allylic C-H amination is currently accomplished with (sulfon)amides or carbamates. Here we show the first allylic amination that can directly afford alkyl allylamines, enabled by the reactivity of thianthrene-based nitrogen sources that can be prepared from primary amines in a single step.
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Affiliation(s)
- Qiang Cheng
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Junting Chen
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Songyun Lin
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Tobias Ritter
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
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109
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Gu ZY, Chen J, Xia JB. Pd-catalyzed amidation of 1,3-diketones with CO and azides via a nitrene intermediate. Chem Commun (Camb) 2020; 56:11437-11440. [PMID: 32845951 DOI: 10.1039/d0cc04565a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
An efficient Pd-catalyzed amidation of 1,3-diketones has been developed using carbon monoxide and organic azides. This reaction provides a step-economic approach to produce β-ketoamides from readily available compounds under mild ligand-, oxidant-, and base-free conditions. The mechanistic studies showed that the reaction occurred through an in situ generated isocyanate intermediate.
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Affiliation(s)
- Zheng-Yang Gu
- College of Textiles and Clothing & Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Jiangsu, 224003, China
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110
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Tan Y, Chen S, Zhou Z, Hong Y, Ivlev S, Houk KN, Meggers E. Intramolecular C(sp 3 )-H Bond Oxygenation by Transition-Metal Acylnitrenoids. Angew Chem Int Ed Engl 2020; 59:21706-21710. [PMID: 32729945 PMCID: PMC7756817 DOI: 10.1002/anie.202009335] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Indexed: 02/01/2023]
Abstract
This study demonstrates for the first time that easily accessible transition‐metal acylnitrenoids can be used for controlled direct C(sp3)‐H oxygenations. Specifically, a ruthenium catalyst activates N‐benzoyloxycarbamates as nitrene precursors towards regioselective intramolecular C−H oxygenations to provide cyclic carbonates, hydroxylated carbamates, or 1,2‐diols. The method can be applied to the chemoselective C−H oxygenation of benzylic, allylic, and propargylic C(sp3)−H bonds. The reaction can be performed in an enantioselective fashion and switched in a catalyst‐controlled fashion between C−H oxygenation and C−H amination. This work provides a new reaction mode for the regiocontrolled and stereocontrolled conversion of C(sp3)‐H into C(sp3)−O bonds.
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Affiliation(s)
- Yuqi Tan
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Shuming Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095-1569, USA
| | - Zijun Zhou
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Yubiao Hong
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Sergei Ivlev
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, 90095-1569, USA
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
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111
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Tan Y, Chen S, Zhou Z, Hong Y, Ivlev S, Houk KN, Meggers E. Intramolecular C(sp
3
)–H Bond Oxygenation by Transition‐Metal Acylnitrenoids. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yuqi Tan
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Shuming Chen
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095-1569 USA
| | - Zijun Zhou
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Yubiao Hong
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Sergei Ivlev
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - K. N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095-1569 USA
| | - Eric Meggers
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Straße 4 35043 Marburg Germany
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112
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Abstract
Lankacidins are a class of polyketide natural products isolated from Streptomyces spp. that show promising antimicrobial activity. Owing to their complex molecular architectures and chemical instability, structural assignment and derivatization of lankacidins are challenging tasks. Herein we describe three fully synthetic approaches to lankacidins that enable access to new structural variability within the class. We use these routes to systematically generate stereochemical derivatives of both cyclic and acyclic lankacidins. Additionally, we access a new series of lankacidins bearing a methyl group at the C4 position, a modification intended to increase chemical stability. In the course of this work, we discovered that the reported structures for two natural products of the lankacidin class were incorrect, and we determine the correct structures of 2,18-seco-lankacidinol B and iso-lankacidinol. We also evaluate the ability of several iso- and seco-lankacidins to inhibit the growth of bacteria and to inhibit translation in vitro. This work grants insight into the rich chemical complexity of this class of antibiotics and provides an avenue for further structural derivatization.
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Affiliation(s)
- Lingchao Cai
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jinagsu Key Lab of Biomass-Based Green Fuels and Chemicals, Nanjing Forestry University, Nanjing, 210037 Jiangsu, China
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute, University of California at San Francisco, San Francisco, California 94158, United States
| | - Yanmin Yao
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute, University of California at San Francisco, San Francisco, California 94158, United States
| | - Seul Ki Yeon
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute, University of California at San Francisco, San Francisco, California 94158, United States
| | - Ian B Seiple
- Department of Pharmaceutical Chemistry and Cardiovascular Research Institute, University of California at San Francisco, San Francisco, California 94158, United States
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113
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Seidi F, Zhao WF, Xiao HN, Jin YC, Saeb MR, Zhao CS. Advanced Surfaces by Anchoring Thin Hydrogel Layers of Functional Polymers. CHINESE JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1007/s10118-020-2474-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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114
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Lu B, Qin Y, Lu Y, Liu Q, Zeng X. Acryloylnitrenes: Spectroscopic Characterization, Spin Multiplicities, and Rearrangement to Vinyl Isocyanates. J Phys Chem A 2020; 124:6319-6329. [PMID: 32660245 DOI: 10.1021/acs.jpca.0c04204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The simplest acryloylnitrene, CH2═CHC(O)N (1b), and two halogenated derivatives, CH2═CFC(O)N (2b) and CH2═CBrC(O)N (3b), were generated through the 266 nm laser photolysis of the corresponding azide precursors in solid N2-matrices at 15 K. The IR spectroscopic characterization of these new acylnitrenes is supported by 15N-labeling and quantum chemical calculations at the B3LYP/6-311++G(3df,3pd) level of theory. For the three nitrenes 1b, 2b, and 3b, two conformers exhibiting syn and anti configurations between the C═C and C═O bonds with respect to the C-C bonds have been identified. Consistent with the CBS-QB3 calculated singlet-triplet energy gaps (ΔEST < 0 kcal mol-1), the IR spectral analysis suggests that all these acryloylnitrenes adopt oxazirine-like structures with closed-shell singlet spin multiplicity. Upon subsequent green light (532 nm) irradiation, these acryloylnitrenes rearrange to form vinyl isocyanates CH2═CXNCO (X = H, F, Br), for which the IR spectra have also been obtained. According to the calculations on the α,β-fluorinated acryloylnitrenes at the CBS-QB3 level, their spin multiplicities can be switched from singlet CH2═CFC(O)N (ΔEST = -0.86 kcal mol-1) to triplet CF2═CFC(O)N (ΔEST = +0.61 kcal mol-1), whereas CFH═CFC(O)N is magnetically bistable due to a rather small ΔEST (+0.09 kcal mol-1).
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Affiliation(s)
- Bo Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Yuanyuan Qin
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Yan Lu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Qian Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China.,Department of Chemistry, Fudan University, Shanghai 200433, China
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115
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Ivanovich RA, Polat DE, Beauchemin AM. Photocatalytic Intramolecular C-H Amination Using N-Oxyureas as Nitrene Precursors. Org Lett 2020; 22:6360-6364. [PMID: 32806194 DOI: 10.1021/acs.orglett.0c02200] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nitrenes are remarkable high-energy chemical species that enable direct C-N bond formation, typically via controlled reactions of metal-stabilized nitrenes. Here, in contrast, the combined use of photocatalysis with careful engineering of the precursor enabled C-H amination forming imidazolidinones and related nitrogen heterocycles from readily accessible hydroxylamine precursors. Preliminary mechanistic results are consistent with the formation of free carbamoyl triplet nitrenes as reactive intermediates.
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Affiliation(s)
- Ryan A Ivanovich
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Dilan E Polat
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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116
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117
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Cheng XF, Fei F, Li Y, Hou YM, Zhou X, Wang XS. Ligand-Accelerated Palladium(II)-Catalyzed Enantioselective Amination of C(sp 2)-H Bonds. Org Lett 2020; 22:6394-6398. [PMID: 32806216 DOI: 10.1021/acs.orglett.0c02216] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first example of the Pd(II)-catalyzed enantioselective amination of aryl C-H bonds is reported. The key to the successful realization of this asymmetric catalytic transformation was the identification of mono-N-protected α-amino-O-methylhydroxamic acid (MPAHA) ligands, which promote reactivity under mild conditions and control enantioselectivity. The counteranions in the solvent medium, hexafluoroacetylacetate and acetate, were also found to play key roles in stereocontrol and reactivity enhancement.
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Affiliation(s)
- Xiu-Fen Cheng
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China.,College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Fan Fei
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yan Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yi-Ming Hou
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Xin Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
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118
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Tian X, Song L, Hashmi ASK. Synthesis of Carbazoles and Related Heterocycles from Sulfilimines by Intramolecular C-H Aminations. Angew Chem Int Ed Engl 2020; 59:12342-12346. [PMID: 32045085 PMCID: PMC7384176 DOI: 10.1002/anie.202000146] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Indexed: 01/28/2023]
Abstract
While direct nitrene insertions into C-H bonds have become an important tool for building C-N bonds in modern organic chemistry, the generation of nitrene intermediates always requires transition metals, high temperatures, ultraviolet or laser light. We report a mild synthesis of carbazoles and related building blocks through a visible light-induced intramolecular C-H amination reaction. A striking advantage of this new method is the use of more reactive aryl sulfilimines instead of the corresponding hazardous azides. Different catalysts and divergent light sources were tested. The reaction scope is broad and the product yield is generally high. An efficient gram-scale synthesis of Clausine C demonstrates the applicability and scalability of this new method.
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Affiliation(s)
- Xianhai Tian
- Institut für Organische ChemieHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Lina Song
- Institut für Organische ChemieHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
| | - A. Stephen K. Hashmi
- Institut für Organische ChemieHeidelberg UniversityIm Neuenheimer Feld 27069120HeidelbergGermany
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz UniversityJeddah21589Saudi Arabia
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119
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Tian X, Song L, Hashmi ASK. Synthese von Carbazolen und Verwandten Heterocyclen aus Sulfiliminen durch Intramolekulare C‐H‐Aminierungen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xianhai Tian
- Institut für Organische Chemie Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Lina Song
- Institut für Organische Chemie Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - A. Stephen K. Hashmi
- Institut für Organische Chemie Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
- Chemistry Department Faculty of Science King Abdulaziz University Jeddah 21589 Saudi Arabia
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120
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Rodríguez MR, Besora M, Molina F, Maseras F, Díaz-Requejo MM, Pérez PJ. Intermolecular Allene Functionalization by Silver-Nitrene Catalysis. J Am Chem Soc 2020; 142:13062-13071. [DOI: 10.1021/jacs.0c04395] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Manuel R. Rodríguez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Quı́mica Sostenible and Departamento de Quı́mica, Universidad de Huelva, 21007 Huelva, Spain
| | - María Besora
- Departament de Quı́mica Fı́sica i Inorgànica, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Francisco Molina
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Quı́mica Sostenible and Departamento de Quı́mica, Universidad de Huelva, 21007 Huelva, Spain
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avenida Països Catalans, 16, 43007 Tarragona, Spain
| | - M. Mar Díaz-Requejo
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Quı́mica Sostenible and Departamento de Quı́mica, Universidad de Huelva, 21007 Huelva, Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC, CIQSO-Centro de Investigación en Quı́mica Sostenible and Departamento de Quı́mica, Universidad de Huelva, 21007 Huelva, Spain
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121
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Wang D, Jahan F, Meise KJ, Lindeman SV, Gardinier JR. Silver(I) and Copper(I) Complexes of Semi‐Bulky Nitrogen‐Confused
C
‐Scorpionates. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000173] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Denan Wang
- Department of Chemistry Marquette University 1414 W. Clybourne St 53233 Milwaukee WI USA
| | - Fathiya Jahan
- Department of Chemistry Marquette University 1414 W. Clybourne St 53233 Milwaukee WI USA
| | - Kristen J. Meise
- Department of Chemistry Marquette University 1414 W. Clybourne St 53233 Milwaukee WI USA
| | - Sergey V. Lindeman
- Department of Chemistry Marquette University 1414 W. Clybourne St 53233 Milwaukee WI USA
| | - James R. Gardinier
- Department of Chemistry Marquette University 1414 W. Clybourne St 53233 Milwaukee WI USA
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122
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Ninomiya R, Arai K, Chen G, Morisaki K, Kawabata T, Ueda Y. β-Silicon-effect-promoted intermolecular site-selective C(sp 3)-H amination with dirhodium nitrenes. Chem Commun (Camb) 2020; 56:5759-5762. [PMID: 32319980 DOI: 10.1039/d0cc00959h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dirhodium-catalyzed, β-selective C-H amination of organosilicon compounds has been developed. Primary C(sp3)-H bonds of silylethyl groups and secondary C(sp3)-H bonds of silacycloalkanes can be selectively converted to C-N bonds at the β-position of the silicon atoms. The experimental data and theoretical calculations indicate that the strong σ-donor ability of the carbon-silicon bonds is responsible for the β-selectivity. Kinetic isotope effects clearly demonstrate that the C-H bond cleavage step is not turnover-limiting, but selectivity-determining.
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Affiliation(s)
- Ryo Ninomiya
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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123
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Lai YH, Wu RS, Huang J, Huang JY, Xu DZ. Iron-Catalyzed Oxidative Coupling of Indoline-2-ones with Aminobenzamides via Dual C-H Functionalization. Org Lett 2020; 22:3825-3829. [PMID: 32378901 DOI: 10.1021/acs.orglett.0c01066] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We describe an unprecedented dual C-H functionalization of indolin-2-one via an oxidative C(sp3)-H/N-H/X-H (X = N, C, S) cross-coupling protocol, which is catalyzed by a simple iron salt under mild and ligand-free conditions and employs air (molecular oxygen) as the terminal oxidant. This method is readily applicable for the construction of tetrasubstituted carbon centers from methylenes and provides a wide variety of spiro N-heterocyclic oxindoles.
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Affiliation(s)
- Yi-Huan Lai
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Run-Shi Wu
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Jie Huang
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Jun-Yu Huang
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Da-Zhen Xu
- National Engineering Research Center of Pesticide (Tianjin), State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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124
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Yoshitake M, Hayashi H, Uchida T. Ruthenium-Catalyzed Asymmetric N-Acyl Nitrene Transfer Reaction: Imidation of Sulfide. Org Lett 2020; 22:4021-4025. [DOI: 10.1021/acs.orglett.0c01373] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Masaki Yoshitake
- Department of Chemistry, Graduate School of Science, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroki Hayashi
- Faculty of Arts and Science, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tatsuya Uchida
- Faculty of Arts and Science, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute of Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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125
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Hwang Y, Jung H, Lee E, Kim D, Chang S. Quantitative Analysis on Two-Point Ligand Modulation of Iridium Catalysts for Chemodivergent C–H Amidation. J Am Chem Soc 2020; 142:8880-8889. [DOI: 10.1021/jacs.0c02079] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yeongyu Hwang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Hoimin Jung
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Euijae Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
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126
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van Vliet KM, de Bruin B. Dioxazolones: Stable Substrates for the Catalytic Transfer of Acyl Nitrenes. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00961] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kaj M. van Vliet
- Van ’t Hoff Institute for Molecular Sciences (HIMS), Faculty of Science, University of Amsterdam (UvA), Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Bas de Bruin
- Van ’t Hoff Institute for Molecular Sciences (HIMS), Faculty of Science, University of Amsterdam (UvA), Science Park 904, 1098 XH Amsterdam, The Netherlands
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127
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Rodríguez AM, Rodríguez MR, Díaz‐Requejo MM, Pérez PJ. Pyrrole Functionalization by Copper‐Catalyzed Nitrene Transfer Reactions. Isr J Chem 2020. [DOI: 10.1002/ijch.201900181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anabel M. Rodríguez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de QuímicaUniversidad de Huelva 21007 - Huelva Spain
| | - Manuel R. Rodríguez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de QuímicaUniversidad de Huelva 21007 - Huelva Spain
| | - M. Mar Díaz‐Requejo
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de QuímicaUniversidad de Huelva 21007 - Huelva Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis Homogénea, Unidad Asociada al CSIC CIQSO-Centro de Investigación en Química Sostenible and Departamento de QuímicaUniversidad de Huelva 21007 - Huelva Spain
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128
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Liu J, Ye W, Wang S, Zheng J, Tang W, Li X. Synthesis of Lactams via Ir-Catalyzed C-H Amidation Involving Ir-Nitrene Intermediates. J Org Chem 2020; 85:4430-4440. [PMID: 32103669 DOI: 10.1021/acs.joc.0c00157] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
x-membered lactams were synthesized via either an amidation of sp3 C-H bonds or an electrophilic substitution of arenes via Ir-nitrene intermediates. With the employment of a readily available iridium catalyst in dichloromethane or hexafluoro-2-propanol, a wide range of lactams were synthesized in good to excellent yields with high selectivity.
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Affiliation(s)
- Jitian Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Jinan, Shandong, P.R. China.,College of Chemistry and Molecule Engineering, Peking University, 100871 Beijing, P. R. China
| | - Wenjing Ye
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States.,Key Laboratory of Structure Based Drug Design and Discovery, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning, P. R. China
| | - Shuojin Wang
- School of Pharmacy, Hainan Medical University, Haikou 571199, P. R. China
| | - Junrong Zheng
- College of Chemistry and Molecule Engineering, Peking University, 100871 Beijing, P. R. China
| | - Weiping Tang
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
| | - Xiaoxun Li
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012 Jinan, Shandong, P.R. China
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129
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Jung H, Keum H, Kweon J, Chang S. Tuning Triplet Energy Transfer of Hydroxamates as the Nitrene Precursor for Intramolecular C(sp3)–H Amidation. J Am Chem Soc 2020; 142:5811-5818. [DOI: 10.1021/jacs.0c00868] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hoimin Jung
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Hyeyun Keum
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Jeonguk Kweon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
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130
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Wu F, Ariyarathna JP, Kaur N, Alom NE, Kennell ML, Bassiouni OH, Li W. Halogen-Bond-Induced Consecutive Csp3–H Aminations via Hydrogen Atom Transfer Relay Strategy. Org Lett 2020; 22:2135-2140. [PMID: 32109065 DOI: 10.1021/acs.orglett.0c00081] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Fan Wu
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Jeewani P. Ariyarathna
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Navdeep Kaur
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Nur-E Alom
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Maureen L. Kennell
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Omar H. Bassiouni
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
| | - Wei Li
- Department of Chemistry and Biochemistry, School of Green Chemistry and Engineering, The University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, United States
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131
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Liang S, Zhao X, Yang T, Yu W. Iron–Phosphine Complex-Catalyzed Intramolecular C(sp3)–H Amination of Azides. Org Lett 2020; 22:1961-1965. [DOI: 10.1021/acs.orglett.0c00308] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Siyu Liang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xiaopeng Zhao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Tonghao Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
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132
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Daniel M, Hiebel MA, Guillaumet G, Pasquinet E, Suzenet F. Intramolecular Metal-Free N-N Bond Formation with Heteroaromatic Amines: Mild Access to Fused-Triazapentalene Derivatives. Chemistry 2020; 26:1525-1529. [PMID: 31872461 DOI: 10.1002/chem.201905558] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Indexed: 02/05/2023]
Abstract
Formation of N-N bonds may offer an original approach to various nitrogen-containing heterocycles with numerous applications. For this purpose, we found that readily available heteroaromatic amines are appropriate substrates for providing an efficient and innovative approach for the formation of N-N bonds in the presence of iodine (III) reagent in very mild conditions. This method makes it possible to synthesize nitrogen rich triazapentalene derivatives exhibiting fluorescent properties, inaccessible with existing approaches.
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Affiliation(s)
- Matthieu Daniel
- Institut de Chimie Organique et Analytique (ICOA), University of Orleans, UMR CNRS 7311, Rue de Chartres, BP 6759, 45067, Orléans, France.,CEA, DAM, Le Ripault, BP16, 37260, Monts, France
| | - Marie-Aude Hiebel
- Institut de Chimie Organique et Analytique (ICOA), University of Orleans, UMR CNRS 7311, Rue de Chartres, BP 6759, 45067, Orléans, France
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique (ICOA), University of Orleans, UMR CNRS 7311, Rue de Chartres, BP 6759, 45067, Orléans, France
| | | | - Franck Suzenet
- Institut de Chimie Organique et Analytique (ICOA), University of Orleans, UMR CNRS 7311, Rue de Chartres, BP 6759, 45067, Orléans, France
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133
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The Tp
x
M Core in C
sp
3
–H Bond Functionalization Reactions: Comparing Carbene, Nitrene, and Oxo Insertion Processes (Tp
x
= Scorpionate Ligand; M = Cu, Ag). Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901168] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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134
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Liu Z, Lu Y, Guo J, Hu W, Dang Y, Wang ZX. DFT Mechanistic Account for the Site Selectivity of Electron-Rich C(sp 3)-H Bond in the Manganese-Catalyzed Aminations. Org Lett 2020; 22:453-457. [PMID: 31913046 DOI: 10.1021/acs.orglett.9b04215] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
DFT study suggests that the C-H cleavage involved in the C(sp3)-H amination catalyzed by manganese perchlorophthalocyanine complex [MnIII(ClPc)]+ proceeds via hydride transfer (HYT), instead of hydrogen atom transfer (HAT), thus elucidating why the reaction favors aminating the electron-rich C-H bond, rather than that with smaller bond dissociation energy preferred by HAT. Detailed analyses indicate the HYT actually occurs via concerted electron and hydrogen atom transfers and the redox-active ClPc ligand enables the HYT.
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Affiliation(s)
- Zheyuan Liu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry , Tianjin University , Tianjin 300072 , China
| | - Yu Lu
- School of Chemical Sciences , University of the Chinese Academy of Sciences , Beijing 100049 , China
| | - Jiandong Guo
- School of Chemical Sciences , University of the Chinese Academy of Sciences , Beijing 100049 , China
| | - Wenping Hu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry , Tianjin University , Tianjin 300072 , China
| | - Yanfeng Dang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry , Tianjin University , Tianjin 300072 , China
| | - Zhi-Xiang Wang
- School of Chemical Sciences , University of the Chinese Academy of Sciences , Beijing 100049 , China
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135
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Hong K, Zhou S, Hu W, Xu X. Rh-Catalyzed nitrene alkyne metathesis/formal C–N bond insertion cascade: synthesis of 3-iminoindolines. Org Chem Front 2020. [DOI: 10.1039/d0qo00294a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A Rh-catalyzed nitrene/alkyne metathesis (NAM) cascade reaction terminated by a formal C–N bond insertion has been developed, which provides facile access to the tricyclic 3-iminoindolines in good yields with broad substrate scope.
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Affiliation(s)
- Kemiao Hong
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Su Zhou
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Xinfang Xu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
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136
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Yang M, Meng XH, Wang Z, Gong Y, Zhao YL. Rhodium/copper-cocatalyzed coupling-cyclization of o-alkenyl arylisocyanides with vinyl azides: one-pot synthesis of α-carbolines. Org Chem Front 2020. [DOI: 10.1039/d0qo00994f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A novel rhodium/copper-cocatalyzed coupling–cyclization reaction of o-alkenyl arylisocyanides with vinyl azides has been developed. The reaction provides a new route to α-carbolines by the formation of two C–C bonds, one C–N bond and two aromatic rings in a single step.
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Affiliation(s)
- Ming Yang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Xiang-He Meng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Zhuo Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Yue Gong
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- China
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137
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Intrieri D, Carminati DM, Zardi P, Damiano C, Manca G, Gallo E, Mealli C. Indoles from Alkynes and Aryl Azides: Scope and Theoretical Assessment of Ruthenium Porphyrin-Catalyzed Reactions. Chemistry 2019; 25:16591-16605. [PMID: 31626355 DOI: 10.1002/chem.201904224] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/17/2019] [Indexed: 01/24/2023]
Abstract
A symbiotic experimental/computational study analyzed the Ru(TPP)(NAr)2 -catalyzed one-pot formation of indoles from alkynes and aryl azides. Thirty different C3 -substituted indoles were synthesized and the best performance, in term of yields and regioselectivities, was observed when reacting ArC≡CH alkynes with 3,5-(EWG)2 C6 H3 N3 azides, whereas the reaction was less efficient when using electron-rich aryl azides. A DFT analysis describes the reaction mechanism in terms of the energy costs and orbital/electronic evolutions; the limited reactivity of electron-rich azides was also justified. In summary, PhC≡CH alkyne interacts with one NAr imido ligand of Ru(TPP)(NAr)2 to give a residually dangling C(Ph) group, which, by coupling with a C(H) unit of the N-aryl substituent, forms a 5+6 bicyclic molecule. In the process, two subsequent spin changes allow inverting the conformation of the sp2 C(Ph) atom and its consequent electrophilic-like attack to the aromatic ring. The bicycle isomerizes to indole via a two-step outer sphere H-migration. Eventually, a 'Ru(TPP)(NAr)' mono-imido active catalyst is reformed after each azide/alkyne reaction.
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Affiliation(s)
- Daniela Intrieri
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Daniela Maria Carminati
- Department of Chemistry, University of Rochester, 416 Hutchison Hall, New York, NY, 14627-0216, USA
| | - Paolo Zardi
- Department of Chemical Sciences, University of Padua, Via F. Marzolo 1, 35131, Padua, Italy
| | - Caterina Damiano
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Gabriele Manca
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
| | - Emma Gallo
- Department of Chemistry, University of Milan, Via Golgi 19, 20133, Milan, Italy
| | - Carlo Mealli
- Istituto di Chimica dei Composti OrganoMetallici, ICCOM-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
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138
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Espinosa M, Noda H, Shibasaki M. Synthesis of Unprotected Spirocyclic β-Prolines and β-Homoprolines by Rh-Catalyzed C-H Insertion. Org Lett 2019; 21:9296-9299. [PMID: 31580682 DOI: 10.1021/acs.orglett.9b03198] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A series of unprotected spirocyclic β-prolines and β-homoprolines are prepared by Rh-catalyzed C-H insertion. The key intermediate, a Rh nitrenoid, is generated by the N-O bond cleavage of a substituted isoxazolidin-5-one. The reaction proceeds on a gram scale with a catalyst loading of as little as 0.1 mol %, affording spirocyclic β-amino acids that are otherwise difficult to obtain. The building blocks prepared in this work will likely find applications in medicinal chemistry.
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Affiliation(s)
- Miguel Espinosa
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
| | - Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), Tokyo , 3-14-23 Kamiosaki , Shinagawa-ku , Tokyo 141-0021 , Japan
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139
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Zhou Z, Chen S, Hong Y, Winterling E, Tan Y, Hemming M, Harms K, Houk KN, Meggers E. Non- C2-Symmetric Chiral-at-Ruthenium Catalyst for Highly Efficient Enantioselective Intramolecular C(sp 3)-H Amidation. J Am Chem Soc 2019; 141:19048-19057. [PMID: 31751132 DOI: 10.1021/jacs.9b09301] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A new class of chiral ruthenium catalysts is introduced in which ruthenium is cyclometalated by two 7-methyl-1,7-phenanthrolinium heterocycles, resulting in chelating pyridylidene remote N-heterocyclic carbene ligands (rNHCs). The overall chirality results from a stereogenic metal center featuring either a Λ or Δ absolute configuration. This work features the importance of the relative metal-centered stereochemistry. Only the non-C2-symmetric chiral-at-ruthenium complexes display unprecedented catalytic activity for the intramolecular C(sp3)-H amidation of 1,4,2-dioxazol-5-ones to provide chiral γ-lactams with up to 99:1 er and catalyst loadings down to 0.005 mol % (up to 11 200 TON), while the C2-symmetric diastereomer favors an undesired Curtius-type rearrangement. DFT calculations elucidate the origins of the superior C-H amidation reactivity displayed by the non-C2-symmetric catalysts compared to related C2-symmetric counterparts.
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Affiliation(s)
- Zijun Zhou
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany
| | - Shuming Chen
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , United States
| | - Yubiao Hong
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany
| | - Erik Winterling
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany
| | - Yuqi Tan
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany
| | - Marcel Hemming
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany
| | - Klaus Harms
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany
| | - K N Houk
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095-1569 , United States
| | - Eric Meggers
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Strasse 4 , 35043 Marburg , Germany
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140
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141
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Das A, Chen YS, Reibenspies JH, Powers DC. Characterization of a Reactive Rh2 Nitrenoid by Crystalline Matrix Isolation. J Am Chem Soc 2019; 141:16232-16236. [DOI: 10.1021/jacs.9b09064] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Anuvab Das
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Yu-Sheng Chen
- ChemMatCARS, University of Chicago c/o APS/ANL, Argonne, Illinois 60439, United States
| | - Joseph H. Reibenspies
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - David C. Powers
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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142
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Tunable catalyst-controlled syntheses of β- and γ-amino alcohols enabled by silver-catalysed nitrene transfer. Nat Catal 2019. [DOI: 10.1038/s41929-019-0339-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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143
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Zhang Y, Ye W, Zhang H, Xiao X. A Novel Catalyst-Free Synthesis of 2,2-Diaryl Enamides from Stilbenes via a Nitrene Transfer Reaction. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900885] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuanyuan Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry. of Education; Shenyang Pharmaceutical University; 110016 Shenyang PR China
| | - Wenjing Ye
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry. of Education; Shenyang Pharmaceutical University; 110016 Shenyang PR China
| | - Hui Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry. of Education; Shenyang Pharmaceutical University; 110016 Shenyang PR China
| | - Xiao Xiao
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry. of Education; Shenyang Pharmaceutical University; 110016 Shenyang PR China
- Department of Chemistry; Ministry. of Education; Temple University; 1901 N. 13 19122 Philadelphia PA USA
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144
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Gogula T, Zhang JQ, Zou HB. Rhodium(III)-Catalyzed Regioselective C(sp 2)-H Functionalization of 7-Arylpyrazolo[1,5- a]pyrimidines with Dioxazolones as Amidating Agents. Org Lett 2019; 21:5933-5937. [PMID: 31328523 DOI: 10.1021/acs.orglett.9b02059] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Rh(III)-catalyzed C-H functionalization of 7-arylpyrazolo[1,5-a]pyrimidines was developed wherein the pyrazolo[1,5-a]pyrimidine moiety is reported for the first time to direct the C-H bond activation. Various 7-arylpyrazolo[1,5-a]pyrimidines underwent smooth C-H amidation with alkyl-, aryl-, and heteroaryl-substituted dioxazolones to afford the products in moderate to good yields. Mechanistic studies suggest that a six-membered rhodacycle intermediate involving N1 might play a key role in the regioselective catalytic cycle.
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Affiliation(s)
- Thirupathi Gogula
- College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , P. R. China
| | - Jin-Quan Zhang
- College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , P. R. China
| | - Hong-Bin Zou
- College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , P. R. China
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145
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Au YK, Lyu H, Quan Y, Xie Z. Catalytic Cascade Dehydrogenative Cross-Coupling of BH/CH and BH/NH: One-Pot Process to Carborano-Isoquinolinone. J Am Chem Soc 2019; 141:12855-12862. [PMID: 31306583 DOI: 10.1021/jacs.9b06204] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A proof-of-principle study of cascade dehydrogenative cross-coupling of carboranyl carboxylic acid with readily available benzamide has been achieved, resulting in the facile synthesis of previously inaccessible carborano-isoquinolinone derivatives in a simple one-pot process, in which two cage B-H, one aryl C-H, and one N-H bond were sequentially activated to construct efficiently new B-C and B-N bonds, respectively. Under suitable reaction conditions, such cascade cyclization can be stopped at the first B-H/C-H cross-coupling step to give a series of α-carboranyl benzamides, suggesting the preferential occurrence of B-C cross-coupling over that of B-N. The carboxylic acid directing group plays a key role in the B-C cross-coupling step, which is then removed through in situ decarboxylation. The CV results combined with control experiments indicate that high-valent Ir(V)-species may be involved in the reaction pathways, which is crucial for such cascade dehydrogenative cross-coupling reactions. The isolation and structural identification of a key intermediate, its controlled transformations, and deuterium labeling experiments support a new Ir-nitrene-mediated amination for B-H/N-H dehydrocoupling.
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Affiliation(s)
- Yik Ki Au
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin , NT, Hong Kong , China
| | - Hairong Lyu
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin , NT, Hong Kong , China
| | - Yangjian Quan
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin , NT, Hong Kong , China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry , The Chinese University of Hong Kong , Shatin , NT, Hong Kong , China
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146
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Hong SY, Chang S. Stereodefined Access to Lactams via Olefin Difunctionalization: Iridium Nitrenoids as a Motif of LUMO-Controlled Dipoles. J Am Chem Soc 2019; 141:10399-10408. [DOI: 10.1021/jacs.9b04317] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Seung Youn Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, Korea
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147
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Yuan SW, Han H, Li YL, Wu X, Bao X, Gu ZY, Xia JB. Intermolecular C-H Amidation of (Hetero)arenes to Produce Amides through Rhodium-Catalyzed Carbonylation of Nitrene Intermediates. Angew Chem Int Ed Engl 2019; 58:8887-8892. [PMID: 31037809 DOI: 10.1002/anie.201903656] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/23/2019] [Indexed: 01/27/2023]
Abstract
Amide bond formation is one of the most important reactions in organic chemistry because of the widespread presence of amides in pharmaceuticals and biologically active compounds. Existing methods for amides synthesis are reaching their inherent limits. Described herein is a novel rhodium-catalyzed three-component reaction to synthesize amides from organic azides, carbon monoxide, and (hetero)arenes via nitrene-intermediates and direct C-H functionalization. Notably, the reaction proceeds in an intermolecular fashion with N2 as the only by-product, and either directing groups nor additives are required. The computational and mechanistic studies show that the amides are formed via a key Rh-nitrene intermediate.
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Affiliation(s)
- Si-Wen Yuan
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Hui Han
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Yan-Lin Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Xueli Wu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Xiaoguang Bao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Zheng-Yang Gu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, China.,College of Textiles and Clothing & Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Jiangsu, 224003, China
| | - Ji-Bao Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou, 730000, China
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148
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Yuan S, Han H, Li Y, Wu X, Bao X, Gu Z, Xia J. Intermolecular C−H Amidation of (Hetero)arenes to Produce Amides through Rhodium‐Catalyzed Carbonylation of Nitrene Intermediates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903656] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Si‐Wen Yuan
- State Key Laboratory for Oxo Synthesis and Selective OxidationSuzhou Research Institute of LICPLanzhou Institute of Chemical Physics (LICP)Chinese Academy of Sciences Lanzhou 730000 China
| | - Hui Han
- State Key Laboratory for Oxo Synthesis and Selective OxidationSuzhou Research Institute of LICPLanzhou Institute of Chemical Physics (LICP)Chinese Academy of Sciences Lanzhou 730000 China
| | - Yan‐Lin Li
- State Key Laboratory for Oxo Synthesis and Selective OxidationSuzhou Research Institute of LICPLanzhou Institute of Chemical Physics (LICP)Chinese Academy of Sciences Lanzhou 730000 China
| | - Xueli Wu
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Xiaoguang Bao
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Zheng‐Yang Gu
- State Key Laboratory for Oxo Synthesis and Selective OxidationSuzhou Research Institute of LICPLanzhou Institute of Chemical Physics (LICP)Chinese Academy of Sciences Lanzhou 730000 China
- College of Textiles and Clothing & Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu ProvinceYancheng Institute of Technology Jiangsu 224003 China
| | - Ji‐Bao Xia
- State Key Laboratory for Oxo Synthesis and Selective OxidationSuzhou Research Institute of LICPLanzhou Institute of Chemical Physics (LICP)Chinese Academy of Sciences Lanzhou 730000 China
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149
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Zhang Y, Duan D, Zhong Y, Guo XA, Guo J, Gou J, Gao Z, Yu B. Fe(III)-Catalyzed Aerobic Intramolecular N–N Coupling of Aliphatic Azides with Amines. Org Lett 2019; 21:4960-4965. [DOI: 10.1021/acs.orglett.9b01396] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yue Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Dongyu Duan
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Ying Zhong
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Xin-Ai Guo
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Jiawei Guo
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Jing Gou
- Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Normal University, Xi’an 710062, China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
| | - Binxun Yu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, Ministry of Education, College of Life Science, Shaanxi Normal University, Xi’an 710062, China
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150
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Abbenseth J, Delony D, Neben MC, Würtele C, de Bruin B, Schneider S. Interconversion of Phosphinyl Radical and Phosphinidene Complexes by Proton Coupled Electron Transfer. Angew Chem Int Ed Engl 2019; 58:6338-6341. [PMID: 30840783 PMCID: PMC6519162 DOI: 10.1002/anie.201901470] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Indexed: 12/04/2022]
Abstract
The isolable complex [Os(PHMes*)H(PNP)] (Mes*=2,4,6-t Bu3 C6 H3 ; PNP=N{CHCHPt Bu2 }2 ) exhibits high phosphinyl radical character. This compound offers access to the phosphinidene complex [Os(PMes*)H(PNP)] by P-H proton coupled electron transfer (PCET). The P-H bond dissociation energy (BDE) was determined by isothermal titration calorimetry and supporting DFT computations. The phosphinidene product exhibits electrophilic reactivity as demonstrated by intramolecular C-H activation.
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Affiliation(s)
- Josh Abbenseth
- Georg-August-Universität GöttingenInstitut für Anorganische ChemieTammannstraße 437077GöttingenGermany
| | - Daniel Delony
- Georg-August-Universität GöttingenInstitut für Anorganische ChemieTammannstraße 437077GöttingenGermany
| | - Marc C. Neben
- Georg-August-Universität GöttingenInstitut für Anorganische ChemieTammannstraße 437077GöttingenGermany
| | - Christian Würtele
- Georg-August-Universität GöttingenInstitut für Anorganische ChemieTammannstraße 437077GöttingenGermany
| | - Bas de Bruin
- Van't Hoff Institute for Molecular Sciences (HIMS)University of Amsterdam (UvA)Science Park 9041098XHAmsterdamThe Netherlands
| | - Sven Schneider
- Georg-August-Universität GöttingenInstitut für Anorganische ChemieTammannstraße 437077GöttingenGermany
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