1
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Tang L, Shen C, Hao S, Dong K. A Type of Chiral C 2-Symmetric Arylthiol Catalyst for Highly Enantioselective Anti-Markovnikov Hydroamination. J Am Chem Soc 2024; 146:16248-16256. [PMID: 38808533 DOI: 10.1021/jacs.4c04596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
The development of chiral hydrogen donor catalysts is fundamental in the expansion and innovation of asymmetric organocatalyzed reactions via an enantioselective hydrogen atom transfer (HAT) process. Herein, an unprecedented type of chiral C2-symmetric arylthiol catalysts derived from readily available enantiomeric lactate ester was developed. With these catalysts, an asymmetric anti-Markovnikov alkene hydroamination-cyclization reaction was established, affording a variety of pharmaceutically interesting 3-substituted piperidines with moderate to high enantioselectivity. Results of the designed control experiments and theoretical computation rationalized the origin of stereocontrol and disclosed the spatial effect of the moiety of chiral thiols on the enantioselectivity. We believed the facile synthesis, flexible tunability, and effective enantioselectivity-controlling capability of these catalysts would shed light on the development of versatile chiral HAT catalysts and related asymmetric reactions.
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Affiliation(s)
- Lin Tang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Chaoren Shen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Shaoyu Hao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Kaiwu Dong
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, State Key Laboratory of Petroleum Molecular & Process Engineering, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
- Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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2
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Kheirkhah B, Huadsai W, Liebing P, Bontemps S, Westerhausen M. Group IV Complexes with Sterically Congested N-Aryl-adamantylcarbamidate Ligands. Organometallics 2023; 42:2304-2311. [PMID: 37654652 PMCID: PMC10467577 DOI: 10.1021/acs.organomet.3c00291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Indexed: 09/02/2023]
Abstract
Metalation of N-(2,6-dibenzhydryl-4-tolyl)adamantane-1-carboxamide (1, Ar*N(H)-C(O)-Ad) with M(NMe2)4 (M = Ti, Zr, Hf) yields amidate complexes Ar*N=C(Ad)-O-Ti(NMe2)3 (2) as well as bis(amidate) compounds (Ar*N=C(Ad)-O)2M(NMe2)2 (M = Zr (3), Hf (4)). In 2, the amidate ligand acts as a monodentate base via the oxygen atom with the Ti center in a slightly distorted tetrahedral environment. The steric requirement of the amidate ligand stabilizes the small coordination number of four of the Ti atom. In congeners 3 and 4, two bidentate amidate ligands exist in the coordination spheres, leading to hexacoordinate group IV metal atoms. The small bite angles of the Zr- and Hf-bound amidate ligands lead to severe distortion of the octahedral environments of the Zr and Hf centers. Titanium compound 2 is an unsuitable choice to catalyze hydrofunctionalization of alkynes with amines and phosphane oxides and despite the significantly smaller pKa value of the carboxylic amide, formation of carboxamide 1 is the dominant reaction upon addition of amines or phosphane oxides to release intramolecular steric strain introduced by the very bulky adamantylamidato ligand.
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Affiliation(s)
- Bahareh
Rezaei Kheirkhah
- Institute
of Inorganic and Analytical Chemistry, Friedrich
Schiller University Jena (FSU), Humboldtstraße 8, D-07743 Jena, Germany
| | - Wimonsiri Huadsai
- Institute
of Inorganic and Analytical Chemistry, Friedrich
Schiller University Jena (FSU), Humboldtstraße 8, D-07743 Jena, Germany
- CNRS
Laboratoire de Chimie de Coordination, UPR 8241, 205 Route de Narbonne, Toulouse CEDEX 4 31077, France
| | - Phil Liebing
- Institute
of Inorganic and Analytical Chemistry, Friedrich
Schiller University Jena (FSU), Humboldtstraße 8, D-07743 Jena, Germany
| | - Sébastien Bontemps
- CNRS
Laboratoire de Chimie de Coordination, UPR 8241, 205 Route de Narbonne, Toulouse CEDEX 4 31077, France
| | - Matthias Westerhausen
- Institute
of Inorganic and Analytical Chemistry, Friedrich
Schiller University Jena (FSU), Humboldtstraße 8, D-07743 Jena, Germany
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3
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Nuñez Bahena E, Schafer LL. From Stoichiometric to Catalytic E–H Functionalization by Non-Metallocene Zirconium Complexes─Recent Advances and Mechanistic Insights. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Erick Nuñez Bahena
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Laurel L. Schafer
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
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4
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Yu ZL, Cheng YF, Jiang NC, Wang J, Fan LW, Yuan Y, Li ZL, Gu QS, Liu XY. Desymmetrization of unactivated bis-alkenes via chiral Brønsted acid-catalysed hydroamination. Chem Sci 2020; 11:5987-5993. [PMID: 34094089 PMCID: PMC8159283 DOI: 10.1039/d0sc00001a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Although great success has been achieved in catalytic asymmetric hydroamination of unactivated alkenes using transition metal catalysis and organocatalysis, the development of catalytic desymmetrising hydroamination of such alkenes remains a tough challenge in terms of attaining a high level of stereocontrol over both remote sites and reaction centers at the same time. To address this problem, here we report a highly efficient and practical desymmetrising hydroamination of unactivated alkenes catalysed by chiral Brønsted acids with both high diastereoselectivity and enantioselectivity. This method features a remarkably broad alkene scope, ranging from mono-substituted and gem-/1,2-disubstituted to the challenging tri- and tetra-substituted alkenes, to provide access to a variety of diversely functionalized chiral pyrrolidines bearing two congested tertiary or quaternary stereocenters with excellent efficiency under mild and user-friendly synthetic conditions. The key to success is indirect activation of unactivated alkenes by chiral Brønsted acids via a concerted hydroamination mechanism.
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Affiliation(s)
- Zhang-Long Yu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Yong-Feng Cheng
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Na-Chuan Jiang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Jian Wang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Li-Wen Fan
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Yue Yuan
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology Shenzhen 518055 China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology Shenzhen 518055 China .,Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, Department of Chemistry, Southern University of Science and Technology Shenzhen 518055 China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
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5
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Sakhare PR, Subramanian P, Kaliappan KP. Copper Catalyzed Oxidative C–C Bond Cleavage of 1,2-Diketones: A Divergent Approach to 1,8-Naphthalimides, Biphenyl-2,2′-dicarboxamides, and N-Heterocyclic Amides. J Org Chem 2019; 84:2112-2125. [DOI: 10.1021/acs.joc.8b03114] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Priyanka R. Sakhare
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India
| | | | - Krishna P. Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India
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6
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Karunarathne MC, Baumann JW, Heeg MJ, Martin PD, Winter CH. Synthesis, structural characterization, and volatility evaluation of zirconium and hafnium amidate complexes. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.03.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Lauzon JM, Eisenberger P, Roşca SC, Schafer LL. Amidate Complexes of Tantalum and Niobium for the Hydroaminoalkylation of Unactivated Alkenes. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01293] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jean Michel Lauzon
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Patrick Eisenberger
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Sorin-Claudiu Roşca
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Laurel L. Schafer
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
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8
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Tolpygin AO, Luconi L, Shavyrin AS, Tuci G, Cherkasov AV, Rossin A, Fukin GK, Giambastiani G, Trifonov AA. (Amido)‐ and (Chlorido)titanium and ‐zirconium Complexes Coordinated by
ansa
‐Bis(amidinate) Ligands with a Rigid
o
‐Phenylene Linker. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Aleksei O. Tolpygin
- Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, GSP‐445 630950 Nizhny Novgorod Russia
| | - Lapo Luconi
- Institute of Chemistry of OrganoMetallic Compounds ICCOM‐CNR Via Madonna del Piano 10 50019 Sesto Fiorentino, Florence Italy
| | - Andrei S. Shavyrin
- Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, GSP‐445 630950 Nizhny Novgorod Russia
| | - Giulia Tuci
- Institute of Chemistry of OrganoMetallic Compounds ICCOM‐CNR Via Madonna del Piano 10 50019 Sesto Fiorentino, Florence Italy
| | - Anton V. Cherkasov
- Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, GSP‐445 630950 Nizhny Novgorod Russia
| | - Andrea Rossin
- Institute of Chemistry of OrganoMetallic Compounds ICCOM‐CNR Via Madonna del Piano 10 50019 Sesto Fiorentino, Florence Italy
| | - Georgy K. Fukin
- Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, GSP‐445 630950 Nizhny Novgorod Russia
| | - Giuliano Giambastiani
- Institute of Chemistry of OrganoMetallic Compounds ICCOM‐CNR Via Madonna del Piano 10 50019 Sesto Fiorentino, Florence Italy
- Kazan Federal University 420008 Kazan Russian Federation
| | - Alexander A. Trifonov
- Institute of Organometallic Chemistry of Russian Academy of Sciences Tropinina 49, GSP‐445 630950 Nizhny Novgorod Russia
- Institute of Organoelement Compounds of Russian Academy of Sciences Vavilova str. 28 119334 Moscow Russia
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9
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Braun C, Bräse S, Schafer LL. Planar-Chiral [2.2]Paracyclophane-Based Amides as Proligands for Titanium- and Zirconium-Catalyzed Hydroamination. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700101] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Carolin Braun
- Institute of Organic Chemistry; Karlsruhe Institute of Technology (KIT); Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Stefan Bräse
- Institute of Organic Chemistry; Karlsruhe Institute of Technology (KIT); Fritz-Haber-Weg 6 76131 Karlsruhe Germany
- Institute of Toxicology and Genetics; Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Laurel L. Schafer
- Department of Chemistry; University of British Columbia; 2036 Main Mall V6T 1Z1 Vancouver BC Canada
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10
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Yeagle KP, Hester D, Piro NA, Dougherty WG, Kassel WS, Graves CR. Synthesis, Characterization, and Catalytic Activity of a Series of Aluminium–Amidate Complexes. Aust J Chem 2015. [DOI: 10.1071/ch14514] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The aluminium complexes {[κ2-N,O-(t-BuNCOPh)]AlMe2}2 (2), [κ2-N,O-(t-BuNCOPh)]2AlMe (3), and [κ2-N,O-(t-BuNCOPh)]3Al (4) were prepared through the protonolysis reaction between trimethylaluminium and one, two, or three equivalents, respectively, of N-tert-butylbenzamide. Complex 2 was also prepared via a salt metathesis reaction between K(t-BuNCOPh) and dimethylaluminium chloride. Complexes 2–4 were characterized using 1H and 13C NMR spectroscopy. Single-crystal X-ray diffraction analysis of the complexes corroborated ligand : metal stoichiometries and revealed that all the amidate ligands coordinate to the aluminium ion in a κ2 fashion. The Al–amidate complexes 2–4 were viable catalyst precursors for the Meerwein–Ponndorf–Verley–Oppenauer reduction–oxidation manifold, successfully interconverting several classes of carbonyl and alcohol substrates.
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11
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Yonson N, Yim JCH, Schafer LL. Alkene hydroamination with a chiral zirconium catalyst. Connecting ligand design, precatalyst structure and reactivity trends. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.07.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Sun YW, Xu Q, Shi M. Synthesis of axially chiral gold complexes and their applications in asymmetric catalyses. Beilstein J Org Chem 2013; 9:2224-32. [PMID: 24204435 PMCID: PMC3817475 DOI: 10.3762/bjoc.9.261] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 09/27/2013] [Indexed: 12/02/2022] Open
Abstract
Several novel chiral N-heterocyclic carbene and phosphine ligands were prepared from (S)-BINOL. Moreover, their ligated Au complexes were also successfully synthesized and characterized by X-ray crystal diffraction. A weak gold-π interaction between the Au atom and the aromatic ring in these gold complexes was identified. Furthermore, we confirmed the formation of a pair of diastereomeric isomers in NHC gold complexes bearing an axially chiral binaphthyl moiety derived from the hindered rotation around C–C and C–N bonds. In the asymmetric intramolecular hydroamination reaction most of these chiral Au(I) complexes showed good catalytic activities towards olefins tethered with a NHTs functional group to give the corresponding product in moderate yields and up to 29% ee.
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Affiliation(s)
- Yin-Wei Sun
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, and 130 MeiLong Road, Shanghai 200237, People's Republic of China
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13
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Manna K, Everett WC, Schoendorff G, Ellern A, Windus TL, Sadow AD. Highly enantioselective zirconium-catalyzed cyclization of aminoalkenes. J Am Chem Soc 2013; 135:7235-50. [PMID: 23631736 DOI: 10.1021/ja4000189] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aminoalkenes are catalytically cyclized in the presence of cyclopentadienylbis(oxazolinyl)borato group 4 complexes {PhB(C5H4)(Ox(R))2}M(NMe2)2 (M = Ti, Zr, Hf; Ox(R) = 4,4-dimethyl-2-oxazoline, 4S-isopropyl-5,5-dimethyl-2-oxazoline, 4S-tert-butyl-2-oxazoline) at room temperature and below, affording five-, six-, and seven-membered N-heterocyclic amines with enantiomeric excesses of >90% in many cases and up to 99%. Mechanistic investigations of this highly selective system employed synthetic tests, kinetics, and stereochemistry. Secondary aminopentene cyclizations require a primary amine (1-2 equiv vs catalyst). Aminoalkenes are unchanged in the presence of a zirconium monoamido complex {PhB(C5H4)(Ox(4S-iPr,Me2))2}Zr(NMe2)Cl or a cyclopentadienylmono(oxazolinyl)borato zirconium diamide {Ph2B(C5H4)(Ox(4S-iPr,Me2))}Zr(NMe2)2. Plots of initial rate versus [substrate] show a rate dependence that evolves from first-order at low concentration to zero-order at high concentration, and this is consistent with a reversible substrate-catalyst interaction preceding an irreversible step. Primary kinetic isotope effects from substrate conversion measurements (k'obs((H))/k'obs((D)) = 3.3 ± 0.3) and from initial rate analysis (k2((H))/k2((D)) = 2.3 ± 0.4) indicate that a N-H bond is broken in the turnover-limiting and irreversible step of the catalytic cycle. Asymmetric hydroamination/cyclization of N-deutero-aminoalkenes provides products with higher optical purities than obtained with N-proteo-aminoalkenes. Transition state theory, applied to the rate constant k2 that characterizes the irreversible step, provides activation parameters consistent with a highly organized transition state (ΔS(++) = -43(7) cal·mol(-1) K(-1)) and a remarkably low enthalpic barrier (ΔH(++) = 6.7(2) kcal·mol(-1)). A six-centered, concerted transition state for C-N and C-H bond formation and N-H bond cleavage involving two amidoalkene ligands is proposed as most consistent with the current data.
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Affiliation(s)
- Kuntal Manna
- Department of Chemistry and U.S. Department of Energy Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA
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14
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Chong E, Qayyum S, Schafer LL, Kempe R. 2-Aminopyridinate Titanium Complexes for the Catalytic Hydroamination of Primary Aminoalkenes. Organometallics 2013. [DOI: 10.1021/om3012695] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eugene Chong
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver,
British Columbia, Canada V6T 1Z1
| | - Sadaf Qayyum
- Lehrstuhl für Anorganische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - Laurel L. Schafer
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver,
British Columbia, Canada V6T 1Z1
| | - Rhett Kempe
- Lehrstuhl für Anorganische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
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15
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Payne PR, Thomson RK, Medeiros DM, Wan G, Schafer LL. Synthesis, structure, and reactivity of tris(amidate) mono(amido) and tetrakis(amidate) complexes of group 4 transition metals. Dalton Trans 2013; 42:15670-7. [DOI: 10.1039/c3dt51868j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Philippa R Payne
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, CanadaV6 T 1Z1.
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16
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17
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Patil NT, Kavthe RD, Shinde VS. Transition metal-catalyzed addition of C-, N- and O-nucleophiles to unactivated C–C multiple bonds. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.05.125] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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18
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Reznichenko AL, Hultzsch KC. The Mechanism of Hydroaminoalkylation Catalyzed by Group 5 Metal Binaphtholate Complexes. J Am Chem Soc 2012; 134:3300-11. [DOI: 10.1021/ja211945m] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander L. Reznichenko
- Department of Chemistry and Chemical
Biology, Rutgers, The State University of New Jersey, 610 Taylor
Road, Piscataway, New Jersey 08854-8087, United States
| | - Kai C. Hultzsch
- Department of Chemistry and Chemical
Biology, Rutgers, The State University of New Jersey, 610 Taylor
Road, Piscataway, New Jersey 08854-8087, United States
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19
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Conde A, Fandos R, Hernández C, Otero A, Rodríguez A, Ruiz MJ. Ligand-Modification Effects on the Reactivity, Solubility, and Stability of Organometallic Tantalum Complexes in Water. Chemistry 2012; 18:2319-26. [DOI: 10.1002/chem.201103026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Indexed: 11/05/2022]
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20
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Brinkmann C, Barrett AGM, Hill MS, Procopiou PA. Heavier Alkaline Earth Catalysts for the Intermolecular Hydroamination of Vinylarenes, Dienes, and Alkynes. J Am Chem Soc 2012; 134:2193-207. [DOI: 10.1021/ja209135t] [Citation(s) in RCA: 164] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christine Brinkmann
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London SW7 2AZ, U.K
| | - Anthony G. M. Barrett
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington,
London SW7 2AZ, U.K
| | - Michael S. Hill
- Department
of Chemistry, University of Bath, Claverton
Down, Bath BA2 7AY, U.K
| | - Panayiotis A. Procopiou
- GlaxoSmithKline Medicines Research Center, Gunnels Wood Road, Stevenage, Hertfordshire
SG1 2NY, U.K
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21
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Khandelwal M, Wehmschulte RJ. Cationic organoaluminum compounds as intramolecular hydroamination catalysts. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2011.09.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Thomson JA, Schafer LL. Yttrium (amidate) complexes for catalytic C–N bond formation. Rapid, room temperature amidation of aldehydes. Dalton Trans 2012; 41:7897-904. [DOI: 10.1039/c2dt30214d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Reznichenko AL, Hultzsch KC. Early Transition Metal (Group 3–5, Lanthanides and Actinides) and Main Group Metal (Group 1, 2, and 13) Catalyzed Hydroamination. TOP ORGANOMETAL CHEM 2011. [DOI: 10.1007/3418_2011_22] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Payne PR, Bexrud JA, Leitch DC, Schafer LL. Asymmetric hydroamination catalyzed by in situ generated chiral amidate and ureate complexes of zirconium — Probing the role of the tether in ligand design. CAN J CHEM 2011. [DOI: 10.1139/v11-091] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Simple chiral proligands have been synthesized from inexpensive chiral starting materials. These amidate and ureate ligands support zirconium complexes that successfully catalyze intramolecular hydroamination with up to 26% ee. Several elements necessary for successful ligand design are highlighted and discussed. In particular, the strict control of metal geometry through multidentate tethered ligands is determined to be an essential aspect of future ligand development.
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Affiliation(s)
- Philippa R. Payne
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1 Canada
| | - Jason A. Bexrud
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1 Canada
| | - David C. Leitch
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1 Canada
| | - Laurel L. Schafer
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1 Canada
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Leitch DC, Platel RH, Schafer LL. Mechanistic Elucidation of Intramolecular Aminoalkene Hydroamination Catalyzed by a Tethered Bis(ureate) Complex: Evidence for Proton-Assisted C–N Bond Formation at Zirconium. J Am Chem Soc 2011; 133:15453-63. [PMID: 21851117 DOI: 10.1021/ja202448b] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David C. Leitch
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Rachel H. Platel
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Laurel L. Schafer
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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Wang Q, Zhang F, Song H, Zi G. Synthesis, structure, and catalytic activity of organolanthanides with chiral biphenyl-based tridentate amidate ligands. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.11.032] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Reznichenko AL, Emge TJ, Audörsch S, Klauber EG, Hultzsch KC, Schmidt B. Group 5 Metal Binaphtholate Complexes for Catalytic Asymmetric Hydroaminoalkylation and Hydroamination/Cyclization. Organometallics 2011. [DOI: 10.1021/om1011006] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander L. Reznichenko
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Thomas J. Emge
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Stephan Audörsch
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
- Institut für Chemie, Organische Synthesechemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Golm, Germany
| | - Eric G. Klauber
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Kai C. Hultzsch
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Bernd Schmidt
- Institut für Chemie, Organische Synthesechemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Golm, Germany
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Ayinla RO, Schafer LL. Intermolecular hydroamination of oxygen-substituted allenes. New routes for the synthesis of N,O-chelated zirconium and titanium amido complexes. Dalton Trans 2011; 40:7769-76. [DOI: 10.1039/c1dt10448a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Zhang F, Song H, Zi G. Synthesis and catalytic activity of group 5 metal amides with chiral biaryldiamine-based ligands. Dalton Trans 2011; 40:1547-66. [DOI: 10.1039/c0dt01229g] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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