1
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So RC, Subramanian H, Kuehn CR, Sibi MP. Relay PHOS: Ligands with Fluxional Chirality in Asymmetric Palladium-Catalyzed Allylic Alkylation. Org Lett 2024. [PMID: 39158060 DOI: 10.1021/acs.orglett.4c02629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
Abstract
A modular route toward the synthesis of P,N ligands containing a fluxional group along the pyrazoline ring core is described. The racemic ligands were accessed in three steps from commercially available fluoroacetophenone in overall yields ranging from 18 to 76%. The enantiopure ligands were obtained using semi-preparative chiral high-performance liquid chromatography and chiral enantioselective phase-transfer catalysis. The effectiveness of the new ligands was assessed in palladium-catalyzed allylic alkylation with diphenylpropenyl acetate and dimethylpropenyl acetate. Under optimized conditions, diphenylpropenyl acetate underwent alkylation with dimethyl malonate in 98% yield and 94% ee. In general, the enantioselectivity for the product correlates with the size of the ligand fluxional group; the larger the fluxional group, the higher the selectivity.
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Affiliation(s)
- Regina C So
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Hariharaputhiran Subramanian
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Carter R Kuehn
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Mukund P Sibi
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
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2
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Morgan D, Reid CM, Guiry PJ. Enantioselective Copper-Catalyzed Alkynylation of Quinolones Using Chiral P,N Ligands. J Org Chem 2024; 89:1993-2000. [PMID: 37967026 PMCID: PMC10845117 DOI: 10.1021/acs.joc.3c01944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/26/2023] [Accepted: 11/01/2023] [Indexed: 11/17/2023]
Abstract
Herein we report a catalytic enantioselective alkynylation of quinolones. In this reaction, quinolones are silylated to form a quinolinium ion which then undergoes an enantioselective attack by a copper acetylide, templated by (S,S,Ra)-UCD-Phim. This gives alkynylated products (24 examples) in yields of up to 92% and enantioselectivities of up to 97%. This methodology has been applied to the synthesis of two natural products, (+)-cuspareine and (+)-galipinine.
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Affiliation(s)
- Dáiríne
M. Morgan
- Centre
for Synthesis and Chemical Biology,
Synthesis and Solid State Pharmaceutical Centre, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Cian M. Reid
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre
for Synthesis and Chemical Biology,
Synthesis and Solid State Pharmaceutical Centre, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
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3
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Pang L, Wang C, Ma C, Liu J, Shi M, Yao C, Yu J, Li Q. Palladium-Catalyzed Modular Assembly of P-Stereogenic and Axially Chiral Phosphinooxazoles (PHOX) Ligands by C-P Bond Cleavage/Intermolecular C(sp 2)-H Bond Functionalization. Org Lett 2023; 25:7705-7710. [PMID: 37831783 DOI: 10.1021/acs.orglett.3c02998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Abstract
Chiral P,N-ligands are of great interest and importance in the fields of metal-catalyzed enantioselective transformations and have found numerous applications spanning drug and polymer synthesis. Here, modular assembly of diverse P-stereogenic and axially chiral phosphinooxazoles ligands is achieved through palladium-catalyzed asymmetric cleavage of C-P bond/intermolecular C-H bond functionalization in high atroposelectivities and diastereoselectivities of up to >99% ee and >25:1 dr. This protocol features broad substrate scope and provides an avenue for facile construction of new P-stereogenic and axially chiral phosphinooxazoles ligands directly from the phosphonium salts and benzoxazoles/benzothiazoles. Evaluation of the synthesized P-stereogenic and axially chiral phosphinooxazoles ligands in two model catalytic asymmetric reactions illustrates the potential of our strategy to access valuable chiral molecules.
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Affiliation(s)
- Liangzhi Pang
- Department of Applied Chemistry and School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Chun Wang
- Department of Applied Chemistry, Anhui Agricultural University, Hefei 230036, China
| | - Congyue Ma
- Department of Applied Chemistry, Anhui Agricultural University, Hefei 230036, China
| | - Jiaojiao Liu
- Department of Applied Chemistry and School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Mengke Shi
- Department of Applied Chemistry, Anhui Agricultural University, Hefei 230036, China
| | - Chuanzhi Yao
- Department of Applied Chemistry, Anhui Agricultural University, Hefei 230036, China
| | - Jie Yu
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, Hefei 230036, China
| | - Qiankun Li
- Department of Applied Chemistry, Anhui Province Engineering Laboratory for Green Pesticide Development and Application, and Anhui Province Key Laboratory of Crop Integrated Pest Management, Anhui Agricultural University, Hefei 230036, China
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4
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Moser D, Jana K, Sparr C. Atroposelective P III /P V =O Redox Catalysis for the Isoquinoline-Forming Staudinger-aza-Wittig Reaction. Angew Chem Int Ed Engl 2023; 62:e202309053. [PMID: 37486685 DOI: 10.1002/anie.202309053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 07/25/2023]
Abstract
Herein, we describe the feasibility of atroposelective PIII /PV =O redox organocatalysis by the Staudinger-aza-Wittig reaction. The formation of isoquinoline heterocycles thereby enables the synthesis of a broad range of valuable atropisomers under mild conditions with enantioselectivities of up to 98 : 2 e.r. Readily prepared azido cinnamate substrates convert in high yield with stereocontrol by a chiral phosphine catalyst, which is regenerated using a silane reductant under Brønsted acid co-catalysis. The reaction provides access to diversified aryl isoquinolines, as well as benzoisoquinoline and naphthyridine atropisomers. The products are expeditiously transformed into N-oxides, naphthol and triaryl phosphine variants of prevalent catalysts and ligands. With dinitrogen release and aromatization as ideal driving forces, it is anticipated that atroposelective redox organocatalysis provides access to a multitude of aromatic heterocycles with precise control over their configuration.
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Affiliation(s)
- Daniel Moser
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Kalipada Jana
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Christof Sparr
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
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5
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Polydentate P, N-based ligands for palladium-catalyzed cross-coupling reactions. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Saunthwal RK, Saini KM, Grimblat N, Danodia AK, Kumar S, Gandon V, Verma AK. Expedient Access to Polyaromatic Biaryls by Unconventional Ag-Catalyzed Cycloaromatization of Alkynylthiophenes and Au-Catalyzed Double C-H Activation. Org Lett 2022; 24:5018-5022. [PMID: 35799326 DOI: 10.1021/acs.orglett.2c01665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An unconventional approach for the regioselective synthesis of polyaromatic biaryls via site-selective Ag-catalyzed twofold electrophilic cycloisomerization followed by Au-catalyzed double C-H activation is described. The developed process allows the synthesis of highly decorated biaryls with excellent regioselectivity. As revealed by DFT computations, the reaction represents a rare example of C1-C5 endo-exo and C1-C6 endo-endo cycloaromatization. The formation of the 6-membered ring is predicted to be the fruit of an uncommon SEAr on a vinyl carbocation.
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Affiliation(s)
| | | | - Nicolas Grimblat
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, route de Saclay, 91128 Palaiseau cedex, France.,Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531 (S2002LRK), Rosario, República Argentina
| | | | - Sushil Kumar
- Department of Chemistry, University of Delhi, Delhi-110007, India
| | - Vincent Gandon
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, route de Saclay, 91128 Palaiseau cedex, France.,Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Akhilesh K Verma
- Department of Chemistry, University of Delhi, Delhi-110007, India.,Institution of Eminence, University of Delhi, Delhi-110007, India
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7
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Zhang X, Li S, Yu W, Xie Y, Tung CH, Xu Z. Asymmetric Azide-Alkyne Cycloaddition with Ir(I)/Squaramide Cooperative Catalysis: Atroposelective Synthesis of Axially Chiral Aryltriazoles. J Am Chem Soc 2022; 144:6200-6207. [PMID: 35377624 DOI: 10.1021/jacs.2c02563] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An Ir(I)/squaramide cooperative catalytic strategy for atroposelective synthesis of axially chiral aryltriazoles has been developed for the first time. Diverse structurally novel aryltriazole skeletons that cannot be accessed by traditional click reactions were synthesized in good yields with excellent enantioselectivity. Both enantiomers were easily obtained from a pair of diastereoisomeric natural quinidine- and quinine-derived squaramides. A significant Ir(I)/squaramide coordination activation, but no self-quenching phenomenon was observed in this metal/organo cooperative catalytic system.
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Affiliation(s)
- Xue Zhang
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Shunian Li
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Wenjing Yu
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Yufang Xie
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Chen-Ho Tung
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Zhenghu Xu
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University, No. 27 South Shanda Road, Jinan 250100, China.,State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang, China
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8
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Biswas A, Pan S, Samanta R. Cu(II)-Catalyzed Construction of Heterobiaryls using 1-Diazonaphthoquinones: A General Strategy for the Synthesis of QUINOX and Related P,N Ligands. Org Lett 2022; 24:1631-1636. [DOI: 10.1021/acs.orglett.2c00127] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Aniruddha Biswas
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Subarna Pan
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Rajarshi Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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9
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Kelly S, Goddard R, Guiry PJ. The Preparation and Resolution of Novel Axially Chiral Pyrazine‐Containing P,N Ligands for Asymmetric Catalysis and Their Application in Palladium‐Catalysed Allylic Substitution. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sarah Kelly
- School of Chemistry Centre for Synthesis and Chemical Biology, University College Dublin, Belfield IE-Dublin 4 Ireland
| | - Richard Goddard
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 DE-45470 Mülheim an der Ruhr Germany
| | - Patrick J. Guiry
- School of Chemistry Centre for Synthesis and Chemical Biology, University College Dublin, Belfield IE-Dublin 4 Ireland
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10
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Hore S, Singh RP. Phosphorylation of arenes, heteroarenes, alkenes, carbonyls and imines by dehydrogenative cross-coupling of P(O)-H and P(R)-H. Org Biomol Chem 2021; 20:498-537. [PMID: 34904988 DOI: 10.1039/d1ob02003j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Organophosphorous compounds have recently emerged as a powerful class of compounds with widespread applications, such as in bioactive natural products, pharmaceuticals, agrochemicals and organic materials, and as ligands in catalysis. The preparation of these compounds requires synthetic techniques with novel catalytic systems varying from transition metal, photo- and electrochemical catalysis to transformations without metal catalysts. Over the past few decades, the addition of P-H bonds to alkenes, alkynes, arenes, heteroarenes and other unsaturated substrates in hydrophosphination and other related reactions via the above-mentioned catalytic processes has emerged as an atom economical approach to obtain organophosphorus compounds. In most of the catalytic cycles, the P-H bond is cleaved to yield a phosphorus-based radical, which adds onto the unsaturated substrate followed by reduction of the corresponding radical yielding the product.
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Affiliation(s)
- Soumyadip Hore
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi-110016, India.
| | - Ravi P Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi-110016, India.
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11
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Evolution in heterodonor P-N, P-S and P-O chiral ligands for preparing efficient catalysts for asymmetric catalysis. From design to applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214120] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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12
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Zhang J, Gao Z, Qian J, Yang H, He M, Jiang G. Enantioselective Construction of Axially Chiral Azepine-Containing P,N-Ligands from l-Alanine. Org Lett 2021; 23:7814-7818. [PMID: 34595919 DOI: 10.1021/acs.orglett.1c02834] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A family of axially chiral azepine-containing seven-membered cyclic P,N-ligands (named Indole-azepinap) have been prepared by using l-alanine as an original chirality source. The direct chromatographic separation of two diastereomeric phosphine oxides on silica gel enabled these ligands to be easy available, allowing further structural and electronic modifications. Preliminary application of these Indole-azepinaps has been demonstrated in a Pd-catalyzed asymmetric allylic alkylation with high yields and moderate enantioselectivities.
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Affiliation(s)
- Jinlong Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Zeng Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Jinlong Qian
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Huameng Yang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Maosheng He
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Gaoxi Jiang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
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13
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Dahiya G, Pappoppula M, Aponick A. Configuration Sampling With Five-Membered Atropisomeric P,N-Ligands. Angew Chem Int Ed Engl 2021; 60:19604-19608. [PMID: 34196080 DOI: 10.1002/anie.202102642] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 05/03/2021] [Indexed: 11/06/2022]
Abstract
Here we report a strategy for the systematic variation of atropisomeric C1 -symmetric P,N ligands to incrementally change the position of the groups within the chiral pocket without modifying their steric parameters. More specifically, the effects of systematic modification of the nitrogen heterocycle in atropisomeric C1 -symmetric stack ligands have been investigated in this study. The versatility and applicability of this approach has been demonstrated in mechanistically distinct catalytic enantioselective transformations, resulting in the identification of a P,N-ligand for a highly enantioselective synthesis of organoboranes.
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Affiliation(s)
- Gaurav Dahiya
- Florida Center for Heterocyclic Compounds & Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Mukesh Pappoppula
- Florida Center for Heterocyclic Compounds & Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds & Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
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14
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Dahiya G, Pappoppula M, Aponick A. Configuration Sampling With Five‐Membered Atropisomeric
P
,
N
‐Ligands. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gaurav Dahiya
- Florida Center for Heterocyclic Compounds & Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Mukesh Pappoppula
- Florida Center for Heterocyclic Compounds & Department of Chemistry University of Florida Gainesville FL 32611 USA
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds & Department of Chemistry University of Florida Gainesville FL 32611 USA
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15
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Meaney K, Goddard R, Bronger RP, Guiry PJ. The preparation of ferrocene-containing phosphinamine ligands possessing central and planar chirality and their application in palladium-catalysed allylic substitution. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Gao Z, Qian J, Yang H, Zhang J, Jiang G. Enantioselective Construction of C-C Axially Chiral Quinazolinones via Chirality Exchange and Phase-Transfer Catalysis. Org Lett 2021; 23:1731-1737. [PMID: 33586979 DOI: 10.1021/acs.orglett.1c00156] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A family of axially chiral quinazolinone-based heterobiaryls were constructed with high levels of enantiocontrol (up to 94% ee). Convergently, three different synthetic methods have been realized to prepare these valuable compounds including central-to-axial chirality transfer, dynamic kinetic resolution, and phase-transfer catalysis. Importantly, novel P,N-ligands with a π-π stacking can be derived from heterobiaryls by chirality exchange strategy or synthesized directly from complementary phase-transfer catalysis by using the inexpensive chiral quaternary ammonium salt.
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Affiliation(s)
- Zeng Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jinlong Qian
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Huameng Yang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Jinlong Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Gaoxi Jiang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
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17
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Gao Z, Wang F, Qian J, Yang H, Xia C, Zhang J, Jiang G. Enantioselective Construction of Quinoxaline-Based Heterobiaryls and P,N-Ligands via Chirality Transfer Strategy. Org Lett 2021; 23:1181-1187. [PMID: 33539703 DOI: 10.1021/acs.orglett.0c03827] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Central-to-axial chirality transfer via C-N single bond oxidation was first achieved as a versatile and conceptually distinct strategy to prepare a new family of axially chiral heteroaromatic biaryl backbones and P,N-ligands (named as Quinoxalinaps) in gram scale. Two atropisomers of Quinoxalinaps (ee >99%) were readily accessed from the same precursor enantiomer by a simple dehydrogenative oxidation with MnO2 and t-BuOOH under mild conditions. Phosphine could be introduced into the ligands before or after the chirality control process. Moreover, these Quinoxalinap P,N-ligands performed well for both asymmetric reactions of the CuBr-catalyzed alkyne conjugate addition with up to -94% ee and AgOAc-catalyzed glycinate imine [3 + 2] annulation with 90% ee, respectively.
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Affiliation(s)
- Zeng Gao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fang Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Jinlong Qian
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Huameng Yang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Jinlong Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
| | - Gaoxi Jiang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, China
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18
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Shao Y, Cheng D. Chiral Phosphoric Acid: A Powerful Organocatalyst for the Asymmetric Synthesis of Heterocycles with Chiral Atropisomerism. ChemCatChem 2020. [DOI: 10.1002/cctc.202001750] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- You‐Dong Shao
- School of Chemistry and Chemical Engineering Heze University Heze 274015 P. R. China
| | - Dao‐Juan Cheng
- School of Pharmacy Anhui University of Chinese Medicine Hefei 230012 P. R. China
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19
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Wang SJ, Wang Z, Tang Y, Chen J, Zhou L. Asymmetric Synthesis of Quinoline-Naphthalene Atropisomers by Central-to-Axial Chirality Conversion. Org Lett 2020; 22:8894-8898. [DOI: 10.1021/acs.orglett.0c03285] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Shao-Jie Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an 710127, P. R. China
| | - Zhe Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an 710127, P. R. China
| | - Yue Tang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an 710127, P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an 710127, P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Department of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi’an 710127, P. R. China
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20
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Wang Q, Zhang WW, Song H, Wang J, Zheng C, Gu Q, You SL. Rhodium-Catalyzed Atroposelective Oxidative C-H/C-H Cross-Coupling Reaction of 1-Aryl Isoquinoline Derivatives with Electron-Rich Heteroarenes. J Am Chem Soc 2020; 142:15678-15685. [PMID: 32865413 DOI: 10.1021/jacs.0c08205] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Rhodium(III)-catalyzed enantioselective oxidative C-H/C-H cross-coupling reaction between two arenes is disclosed. With the combination of a chiral CpRh(III) complex and a chiral carboxylic acid additive, the direct coupling reactions between 1-aryl isoquinoline derivatives and electron-rich heteroarenes such as thiophenes, furans, benzothiophenes, and benzofurans are realized via a double C-H functionalization process. A series of axially chiral compounds are obtained in excellent yields and enantioselectivities (up to 99% yield and 99% ee). Mechanistic studies suggest that both C-H bond cleavages may not be the turnover-limiting step.
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Affiliation(s)
- Qiang Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Wen-Wen Zhang
- Chang-Kung Chuang Institute, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Hao Song
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Jian Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.,Chang-Kung Chuang Institute, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
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21
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Cheng D, Shao Y. Advances in the Catalytic Asymmetric Synthesis of Atropisomeric Hexatomic N‐Heterobiaryls. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000354] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Dao‐Juan Cheng
- School of Chemistry and Chemical EngineeringHeze University Heze 274015 People's Republic of China
| | - You‐Dong Shao
- School of Chemistry and Chemical EngineeringHeze University Heze 274015 People's Republic of China
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22
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Katona D, Lu Y, Li Y, Pullarkat SA, Leung PH. Catalytic Approach toward Chiral P,N-Chelate Complexes Utilizing the Asymmetric Hydrophosphination Protocol. Inorg Chem 2020; 59:3874-3886. [PMID: 32090541 DOI: 10.1021/acs.inorgchem.9b03549] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A synthetic procedure for obtaining a chiral P,N ligand was developed by exploiting the versatility of the asymmetric hydrophosphination protocol catalyzed by a phosphapalladacycle complex. The addition of the synthesized ligand to various metal sources led to the generation of chiral and enantioenriched chelate complexes, which can be useful prototypes for catalyst design in the future. The resulting coordination compounds were comprehensively characterized by solid-state (X-ray crystallography) and solution-based (one- and two-dimensional NMR spectroscopy) techniques and natural bond orbital (density functional theory) analysis to determine their structural and key electronic features.
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Affiliation(s)
- Dávid Katona
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yunpeng Lu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Sumod A Pullarkat
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Pak-Hing Leung
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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23
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Carroll AM, McCarthy M, Lacey PM, Saunders CP, Connolly DJ, Farrell A, Rokade BV, Goddard R, Fristrup P, Norrby PO, Guiry PJ. Synthetic and mechanistic studies in enantioselective allylic substitutions catalysed by palladium complexes of a modular class of axially chiral quinazoline-containing ligands. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130780] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Birepinte M, Robert F, Pinet S, Chabaud L, Pucheault M. Non-biaryl atropisomerism at the C–B bond in sterically hindered aminoarylboranes. Org Biomol Chem 2020; 18:3007-3011. [DOI: 10.1039/d0ob00421a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Sterically hindered aminoarylboranes with atropisomerism about the C–B bond were prepared and resolved by chiral stationary phase HPLC.
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Affiliation(s)
- Mélodie Birepinte
- Institute of Molecular Science
- CNRS
- Université de Bordeaux
- 33405 Talence cedex
- France
| | - Frédéric Robert
- Institute of Molecular Science
- CNRS
- Université de Bordeaux
- 33405 Talence cedex
- France
| | - Sandra Pinet
- Institute of Molecular Science
- CNRS
- Université de Bordeaux
- 33405 Talence cedex
- France
| | - Laurent Chabaud
- Institute of Molecular Science
- CNRS
- Université de Bordeaux
- 33405 Talence cedex
- France
| | - Mathieu Pucheault
- Institute of Molecular Science
- CNRS
- Université de Bordeaux
- 33405 Talence cedex
- France
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25
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Wang Q, Li S, Hou C, Chu T, Hu X. Chiral P,N‐ligands for the highly enantioselective addition of diethylzinc to aromatic aldehydes. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Qiang Wang
- School of Light Industry and Chemical EnginerringDalian Polytechnic University Dalian 116034 China
| | - Shuang Li
- School of Light Industry and Chemical EnginerringDalian Polytechnic University Dalian 116034 China
| | - Chuan‐Jin Hou
- School of Light Industry and Chemical EnginerringDalian Polytechnic University Dalian 116034 China
| | - Ting‐Ting Chu
- School of Light Industry and Chemical EnginerringDalian Polytechnic University Dalian 116034 China
| | - Xiang‐Ping Hu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
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26
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Rokade BV, Barker J, Guiry PJ. Development of and recent advances in asymmetric A3 coupling. Chem Soc Rev 2019; 48:4766-4790. [PMID: 31465045 DOI: 10.1039/c9cs00253g] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Asymmetric A3 coupling has emerged as an important class of reactions to synthesise chiral propargylamines. In this tutorial review, an up to date progress of this reaction, with significant recent advancements in terms of ligand development, is presented. Applications of asymmetric A3 coupling in natural product synthesis and in tandem processes are also discussed.
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Affiliation(s)
- Balaji V Rokade
- Centre for Synthesis and Chemical Biology (CSCB), School of Chemistry, University College Dublin (UCD), Belfield, Dublin 4, Ireland.
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27
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Wang Q, Cai ZJ, Liu CX, Gu Q, You SL. Rhodium-Catalyzed Atroposelective C-H Arylation: Efficient Synthesis of Axially Chiral Heterobiaryls. J Am Chem Soc 2019; 141:9504-9510. [PMID: 31184139 DOI: 10.1021/jacs.9b03862] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Rhodium(I)-catalyzed atroposelective C-H arylation of heterobiaryls was presented. In the presence of a Rh catalyst derived from [Rh(C2H4)2Cl]2 and a TADDOL-derived monodentate phosphonite, with 2-pyridine, 2-isoquinoline and their analogs as directing groups, a series of axially chiral heterobiaryls were obtained in excellent yields and enantioselectivities (up to 99% yield, 97% ee) via C-H direct functionalization reaction. The products obtained from this method provide a platform for the synthesis of axially chiral biaryl ligands and catalysts. As a demonstration, a chiral N-oxide synthesized from the product in one step could act as an efficient catalyst for asymmetric allylation of benzaldehyde with allyltrichlorosilane, leading to homoallyl alcohol with excellent enantiocontrol.
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Affiliation(s)
- Qiang Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Zhong-Jian Cai
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Chen-Xu Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Lu , Shanghai 200032 , China
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28
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Rokade BV, Guiry PJ. Enantioselective Catalytic Asymmetric A3 Coupling with Phosphino-Imidazoline Ligands. J Org Chem 2019; 84:5763-5772. [PMID: 30942080 DOI: 10.1021/acs.joc.9b00728] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A practical application of the UCD-PHIM ligand in the copper-catalyzed asymmetric A3 coupling is reported for aromatic, alkenylic, and alkynylic aldehydes under mild reaction conditions, low catalytic loading, and at ambient temperature. A broad range of aldehydes, secondary amines with a cheaper ethyne equivalent, 2-methyl-3-butyn-2-ol, was explored and enantioselectivities of up to 99% ee were obtained. The importance of (i) axial chirality and central chirality, (ii) imidazoline moiety over oxazoline moiety, and (iii) phosphine unit is investigated for A3 coupling by synthesizing and testing a series of related ligands to UCD-PHIM.
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Affiliation(s)
- Balaji V Rokade
- Centre for Synthesis and Chemical Biology (CSCB), Synthesis and Solid State Pharmaceutical Centre, School of Chemistry , University College Dublin (UCD) , Belfield, Dublin 4 , Ireland
| | - Patrick J Guiry
- Centre for Synthesis and Chemical Biology (CSCB), Synthesis and Solid State Pharmaceutical Centre, School of Chemistry , University College Dublin (UCD) , Belfield, Dublin 4 , Ireland
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29
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Hirsch DR, Metrano AJ, Stone EA, Storch G, Miller SJ, Murelli RP. Troponoid Atropisomerism: Studies on the Configurational Stability of Tropone-Amide Chiral Axes. Org Lett 2019; 21:2412-2415. [PMID: 30869521 PMCID: PMC6504963 DOI: 10.1021/acs.orglett.9b00707] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Configurationally stable, atropisomeric motifs are an important structural element in a number of molecules, including chiral ligands, catalysts, and molecular devices. Thus, understanding features that stabilize chiral axes is of fundamental interest throughout the chemical sciences. The following details the high rotational barriers about the Ar-C(O) bond of tropone amides, which significantly exceed those of analogous benzamides. These studies are supported by both experimental and computational rotational barrier measurements. We also report the resolution of an axially chiral α-hydroxytropolone amide into its individual atropisomers, and demonstrate its configurational stability at physiological pH and temperatures over 24 h.
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Affiliation(s)
- Danielle R. Hirsch
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016 United States
| | - Anthony J. Metrano
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Elizabeth A. Stone
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Golo Storch
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Scott J. Miller
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
| | - Ryan P. Murelli
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
- PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, New York 10016 United States
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30
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Lu Z, Zhang H, Yang Z, Ding N, Meng L, Wang J. Asymmetric Hydrophosphination of Heterobicyclic Alkenes: Facile Access to Phosphine Ligands for Asymmetric Catalysis. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04787] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhiwu Lu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Haoyang Zhang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhiping Yang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ning Ding
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ling Meng
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Department of Chemistry, Hong Kong University of Science and Technology, Hong Kong
| | - Jun Wang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, China
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31
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Han S, Bhat V, Stoltz BM, Virgil SC. Atroposelective Synthesis of PINAP via Dynamic Kinetic Asymmetric Transformation. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801248] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Seo‐Jung Han
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical EngineeringCalifornia Institute of Technology 1200 East California Boulevard, MC 101-20 Pasadena, California 91125 United States
- Chemical Kinomics Research CenterKorea Institute of Science and Technology (KIST), 5 Hwarangro 14-gil, Seongbuk-gu Seoul 02792 Republic of Korea
| | - Vikram Bhat
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical EngineeringCalifornia Institute of Technology 1200 East California Boulevard, MC 101-20 Pasadena, California 91125 United States
- Abbvie, Inc. 1 N Waukegan Road North Chicago IL 60064 United States
| | - Brian M. Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical EngineeringCalifornia Institute of Technology 1200 East California Boulevard, MC 101-20 Pasadena, California 91125 United States
| | - Scott C. Virgil
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical EngineeringCalifornia Institute of Technology 1200 East California Boulevard, MC 101-20 Pasadena, California 91125 United States
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32
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Ramsaywack S, Bos A, Vogels CM, Gray CA, Westcott SA. Preliminary investigations into the synthesis and antimicrobial activities of boron-containing capsaicinoids. CAN J CHEM 2018. [DOI: 10.1139/cjc-2018-0193] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This preliminary study reports on the synthesis of two new boron-capsaicin derivatives containing either a short or long chain aliphatic tail group using an iridium catalyzed hydroboration reaction with pinacolborane. The boronate ester groups reside on the terminal position of the tail group and are necessary for the bioactivity of these compounds. Indeed, both compounds showed considerable activity against two Gram-positive bacteria, including Vancomycin-resistant Enterococcus. Vancomycin is considered the last resort medication for the treatment of septicemia, and new antibacterial agents that can treat sepsis are of paramount importance. The more lipophilic boron compound with the longer aliphatic chain also showed antifungal activity against Saccharomyces cerevisiae.
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Affiliation(s)
- Sharwatie Ramsaywack
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Allyson Bos
- Department of Biological Sciences, University of New Brunswick, Saint John, NB E2L 4L5, Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Christopher A. Gray
- Department of Biological Sciences, University of New Brunswick, Saint John, NB E2L 4L5, Canada
- Department of Chemistry, University of New Brunswick, Saint John, NB E2L 4L5, Canada
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
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33
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Firuzabadi FD, Asadi Z. Palladium-Catalyzed O-Arylation Reaction Using Different Heterogeneous Catalyst Systems: The Role of Support. ChemistrySelect 2018. [DOI: 10.1002/slct.201801442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Zahra Asadi
- Department of Chemistry; College of Sciences; Shiraz University; Shiraz 71454 Iran
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34
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Affiliation(s)
- Balaji V. Rokade
- Centre for Synthesis and
Chemical Biology (CSCB), School of Chemistry, University College Dublin (UCD), Belfield, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre for Synthesis and
Chemical Biology (CSCB), School of Chemistry, University College Dublin (UCD), Belfield, Dublin 4, Ireland
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35
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Aminoalkyl-phosphine (P,N) ligands with pentane-2,4-diyl backbone in asymmetric allylic substitution reactions. MONATSHEFTE FUR CHEMIE 2017. [DOI: 10.1007/s00706-017-2029-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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36
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Farkas G, Császár Z, Stágel K, Nemes E, Balogh S, Tóth I, Bényei A, Lendvay G, Bakos J. Efficient stereochemical communication in phosphine-amine palladium-complexes: Exploration of N-substituent effects in coordination chemistry and catalysis. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.04.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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37
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Costil R, Dale HJA, Fey N, Whitcombe G, Matlock JV, Clayden J. Heavily Substituted Atropisomeric Diarylamines by Unactivated Smiles Rearrangement of
N
‐Aryl Anthranilamides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706341] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Romain Costil
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Harvey J. A. Dale
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Natalie Fey
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - George Whitcombe
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | | | - Jonathan Clayden
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
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38
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Costil R, Dale HJA, Fey N, Whitcombe G, Matlock JV, Clayden J. Heavily Substituted Atropisomeric Diarylamines by Unactivated Smiles Rearrangement of
N
‐Aryl Anthranilamides. Angew Chem Int Ed Engl 2017; 56:12533-12537. [DOI: 10.1002/anie.201706341] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 08/16/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Romain Costil
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Harvey J. A. Dale
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Natalie Fey
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - George Whitcombe
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | | | - Jonathan Clayden
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
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39
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Rokade BV, Guiry PJ. Diastereofacial π-Stacking as an Approach To Access an Axially Chiral P,N-Ligand for Asymmetric Catalysis. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03427] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Balaji V. Rokade
- Centre for Synthesis and
Chemical Biology (CSCB), School of Chemistry, University College Dublin (UCD), Belfield, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre for Synthesis and
Chemical Biology (CSCB), School of Chemistry, University College Dublin (UCD), Belfield, Dublin 4, Ireland
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40
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Mishra S, Liu J, Aponick A. Enantioselective Alkyne Conjugate Addition Enabled by Readily Tuned Atropisomeric P,N-Ligands. J Am Chem Soc 2017; 139:3352-3355. [DOI: 10.1021/jacs.7b00363] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Sourabh Mishra
- Center for Heterocyclic Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Ji Liu
- Center for Heterocyclic Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Center for Heterocyclic Compounds,
Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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41
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Paioti PHS, Abboud KA, Aponick A. Incorporation of Axial Chirality into Phosphino-Imidazoline Ligands for Enantioselective Catalysis. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00133] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paulo H. S. Paioti
- Center
for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Khalil A. Abboud
- Center
for X-ray Crystallography, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Center
for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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42
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Jayasundera KP, Engels TGW, Lun DJ, Mungalpara MN, Plieger PG, Rowlands GJ. The synthesis of planar chiral pseudo-gem aminophosphine pre-ligands based on [2.2]paracyclophane. Org Biomol Chem 2017; 15:8975-8984. [DOI: 10.1039/c7ob02393f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We have synthesized three pseudo-gem [2.2]paracyclophane-derived P,N-ligands and report preliminary activity studies for the amination of aryl bromides and chlorides.
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Affiliation(s)
| | - Tim G. W. Engels
- Institute of Fundamental Sciences
- Massey University
- Palmerston North
- New Zealand
- Fontys University of Applied Science
| | - David J. Lun
- Institute of Fundamental Sciences
- Massey University
- Palmerston North
- New Zealand
| | | | - Paul G. Plieger
- Institute of Fundamental Sciences
- Massey University
- Palmerston North
- New Zealand
| | - Gareth J. Rowlands
- Institute of Fundamental Sciences
- Massey University
- Palmerston North
- New Zealand
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43
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Geier SJ, LaFortune JHW, Zhu D, Kosnik SC, Macdonald CLB, Stephan DW, Westcott SA. The phosphinoboration of carbodiimides, isocyanates, isothiocyanates and CO2. Dalton Trans 2017; 46:10876-10885. [DOI: 10.1039/c7dt02305g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The transition metal-free addition of phosphinoboronate ester Ph2PBpin (pin = 1,2-O2C2Me4) to heterocumulenes including carbodiimides, isocyanates, isothiocyanates and carbon dioxide proceeds with remarkable selectivity to give products in high yield.
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Affiliation(s)
- Stephen J. Geier
- Department of Chemistry and Biochemistry
- Mount Allison University
- Sackville
- Canada
| | | | - Diya Zhu
- Department of Chemistry and Biochemistry
- Mount Allison University
- Sackville
- Canada
- Department of Chemistry
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44
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Rexiti R, Lu J, Wang G, Sha F, Wu XY. Enantioselective Cu(II)-catalyzed Henry reactions with chiral cyclohexane-based amidophosphine ligands. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.07.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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45
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Ramírez-López P, Ros A, Romero-Arenas A, Iglesias-Sigüenza J, Fernández R, Lassaletta JM. Synthesis of IAN-type N,N-Ligands via Dynamic Kinetic Asymmetric Buchwald-Hartwig Amination. J Am Chem Soc 2016; 138:12053-6. [PMID: 27595166 DOI: 10.1021/jacs.6b07972] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The Pd(0)-catalyzed coupling of racemic heterobiaryl bromides, triflates, or nonaflates with aryl/alkyl primary amines using QUINAP as the ligand provides the corresponding axially chiral heterobiaryl amines with excellent yields and enantioselectivities. Reactivity and structural studies of neutral and cationic oxidative addition intermediates support a dynamic kinetic asymmetric amination mechanism based on the labilization of the stereogenic axis in the latter and suggest that coordination of the amine to the Pd center is the stereodetermining step.
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Affiliation(s)
- Pedro Ramírez-López
- Instituto Investigaciones Químicas (CSIC-US) , C/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Abel Ros
- Instituto Investigaciones Químicas (CSIC-US) , C/Américo Vespucio, 49, 41092 Sevilla, Spain.,Departamento de Química Orgánica, University of Seville , C/Prof. García González, 1, 41012 Sevilla, Spain
| | - Antonio Romero-Arenas
- Instituto Investigaciones Químicas (CSIC-US) , C/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Javier Iglesias-Sigüenza
- Departamento de Química Orgánica, University of Seville , C/Prof. García González, 1, 41012 Sevilla, Spain
| | - Rosario Fernández
- Departamento de Química Orgánica, University of Seville , C/Prof. García González, 1, 41012 Sevilla, Spain
| | - José M Lassaletta
- Instituto Investigaciones Químicas (CSIC-US) , C/Américo Vespucio, 49, 41092 Sevilla, Spain
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46
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Staniland S, Adams RW, McDouall JJW, Maffucci I, Contini A, Grainger DM, Turner NJ, Clayden J. Biocatalytic Dynamic Kinetic Resolution for the Synthesis of Atropisomeric Biaryl N-Oxide Lewis Base Catalysts. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605486] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Ralph W. Adams
- School of Chemistry; University of Manchester; Manchester M13 9PL UK
| | | | - Irene Maffucci
- Università di Milano, Dipartimento Scienze Farmaceutiche-Sezione di Chimica Generale e Organica “Alessandro Marchesini”; Università degli Studi di Milano; 20133 Milano Italy
| | - Alessandro Contini
- Università di Milano, Dipartimento Scienze Farmaceutiche-Sezione di Chimica Generale e Organica “Alessandro Marchesini”; Università degli Studi di Milano; 20133 Milano Italy
| | | | - Nicholas J. Turner
- School of Chemistry; University of Manchester, Manchester Institute of Biotechnology; 131 Princess Street Manchester M1 7DN UK
| | - Jonathan Clayden
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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47
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Staniland S, Adams RW, McDouall JJW, Maffucci I, Contini A, Grainger DM, Turner NJ, Clayden J. Biocatalytic Dynamic Kinetic Resolution for the Synthesis of Atropisomeric Biaryl N-Oxide Lewis Base Catalysts. Angew Chem Int Ed Engl 2016; 55:10755-9. [DOI: 10.1002/anie.201605486] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Indexed: 12/17/2022]
Affiliation(s)
| | - Ralph W. Adams
- School of Chemistry; University of Manchester; Manchester M13 9PL UK
| | | | - Irene Maffucci
- Università di Milano, Dipartimento Scienze Farmaceutiche-Sezione di Chimica Generale e Organica “Alessandro Marchesini”; Università degli Studi di Milano; 20133 Milano Italy
| | - Alessandro Contini
- Università di Milano, Dipartimento Scienze Farmaceutiche-Sezione di Chimica Generale e Organica “Alessandro Marchesini”; Università degli Studi di Milano; 20133 Milano Italy
| | | | - Nicholas J. Turner
- School of Chemistry; University of Manchester, Manchester Institute of Biotechnology; 131 Princess Street Manchester M1 7DN UK
| | - Jonathan Clayden
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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48
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Substituent effects on axial chirality in 1-aryl-3,4-dihydroisoquinolines: controlling the rate of bond rotation. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.01.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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Neeve EC, Geier SJ, Mkhalid IAI, Westcott SA, Marder TB. Diboron(4) Compounds: From Structural Curiosity to Synthetic Workhorse. Chem Rev 2016; 116:9091-161. [PMID: 27434758 DOI: 10.1021/acs.chemrev.6b00193] [Citation(s) in RCA: 737] [Impact Index Per Article: 92.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Although known for over 90 years, only in the past two decades has the chemistry of diboron(4) compounds been extensively explored. Many interesting structural features and reaction patterns have emerged, and more importantly, these compounds now feature prominently in both metal-catalyzed and metal-free methodologies for the formation of B-C bonds and other processes.
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Affiliation(s)
- Emily C Neeve
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg , Würzburg 97074, Germany
| | - Stephen J Geier
- Mount Allison University , Department of Biochemistry and Chemistry, Sackville, New Brunswick E4L 1G8, Canada
| | | | - Stephen A Westcott
- Mount Allison University , Department of Biochemistry and Chemistry, Sackville, New Brunswick E4L 1G8, Canada
| | - Todd B Marder
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg , Würzburg 97074, Germany
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50
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Pàmies O, Diéguez M. Adaptable P-X Biaryl Phosphite/Phosphoroamidite-Containing Ligands for Asymmetric Hydrogenation and C-X Bond-Forming Reactions: Ligand Libraries with Exceptionally Wide Substrate Scope. CHEM REC 2016; 16:2460-2481. [PMID: 27324282 DOI: 10.1002/tcr.201600062] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Indexed: 11/08/2022]
Abstract
In this personal review, we present our efforts in the design of ligand libraries for the discovery of suitable metal catalysts for asymmetric hydrogenation and C-X bond-forming reactions.
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Affiliation(s)
- Oscar Pàmies
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili C/Marcel·li Domingo, 1. 43007, Tarragona, Spain
| | - Montserrat Diéguez
- Departament de Química Física i Inorgànica, Universitat Rovira i Virgili C/Marcel·li Domingo, 1. 43007, Tarragona, Spain
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