1
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Brodsky N, Phadnis N, Ibrahim M, Andino IM, Giro IB, Milligan JA. 3-Chloropropylbis(catecholato)silicate as a Bifunctional Reagent for the One-Pot Synthesis of Tetrahydroquinolines from o-Bromosulfonamides. J Org Chem 2024; 89:4191-4198. [PMID: 38412512 PMCID: PMC10949236 DOI: 10.1021/acs.joc.3c02267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 02/09/2024] [Accepted: 02/12/2024] [Indexed: 02/29/2024]
Abstract
Bis(catecholato)silicate salts are easily accessible reagents that can be used to install alkyl fragments through photoredox-enabled cross-coupling. These reagents can incorporate various functional groups including pendant alkyl halides. A halogenated organosilicate reagent was leveraged to develop a one-pot synthesis of tetrahydroquinolines from o-bromosulfonamides, where the bifunctional reagent participates in a nickel/photoredox cross-coupling followed by intramolecular nucleophilic substitution. The functional group tolerance of this cross-coupling strategy allowed for the preparation of a series of substituted tetrahydroquinolines.
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Affiliation(s)
- Noah Brodsky
- Department of Biological
and Chemical Sciences, College of Life Sciences, Thomas Jefferson University, 4201 Henry Avenue, Philadelphia, Pennsylvania 19144, United States
| | - Nidheesh Phadnis
- Department of Biological
and Chemical Sciences, College of Life Sciences, Thomas Jefferson University, 4201 Henry Avenue, Philadelphia, Pennsylvania 19144, United States
| | - Mohamed Ibrahim
- Department of Biological
and Chemical Sciences, College of Life Sciences, Thomas Jefferson University, 4201 Henry Avenue, Philadelphia, Pennsylvania 19144, United States
| | - Isabel M. Andino
- Department of Biological
and Chemical Sciences, College of Life Sciences, Thomas Jefferson University, 4201 Henry Avenue, Philadelphia, Pennsylvania 19144, United States
| | - Inés Blanc Giro
- Department of Biological
and Chemical Sciences, College of Life Sciences, Thomas Jefferson University, 4201 Henry Avenue, Philadelphia, Pennsylvania 19144, United States
| | - John A. Milligan
- Department of Biological
and Chemical Sciences, College of Life Sciences, Thomas Jefferson University, 4201 Henry Avenue, Philadelphia, Pennsylvania 19144, United States
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2
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Xu J, Lan Y, Liu B. Activation of Aryl and Alkyl Halides Enabled by Strong Photoreduction Potentials of a Hantzsch Ester/Cs 2CO 3 System. J Org Chem 2024; 89:599-604. [PMID: 38113916 DOI: 10.1021/acs.joc.3c02320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
We disclose herein a light-induced Hantzsch ester-initiated aryl and alkyl radical generation protocol from aryl halides (Br and Cl) and alkyl iodides. This method provides access to a wide range of benzo-fused heterocycles and C(sp3)-C(sp3) coupling products. The reductive detosylation reaction has also been demonstrated using the same reaction conditions. Initial mechanism studies provide evidence of the formation of an alkyl radical.
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Affiliation(s)
- Junhua Xu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
| | - Yingjun Lan
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
| | - Bin Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
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3
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Apolinar O, Kang T, Alturaifi TM, Bedekar PG, Rubel CZ, Derosa J, Sanchez BB, Wong QN, Sturgell EJ, Chen JS, Wisniewski SR, Liu P, Engle KM. Three-Component Asymmetric Ni-Catalyzed 1,2-Dicarbofunctionalization of Unactivated Alkenes via Stereoselective Migratory Insertion. J Am Chem Soc 2022; 144:19337-19343. [PMID: 36222701 DOI: 10.1021/jacs.2c06636] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An asymmetric 1,2-dicarbofunctionalization of unactivated alkenes with aryl iodides and aryl/alkenylboronic esters under nickel/bioxazoline catalysis is disclosed. A wide array of aryl and alkenyl nucleophiles are tolerated, furnishing the products in good yield and with high enantioselectivity. In addition to terminal alkenes, 1,2-disubstituted internal alkenes participate in the reaction, establishing two contiguous stereocenters with high diastereoselectivity and moderate enantioselectivity. A combination of experimental and computational techniques shed light on the mechanism of the catalytic transformation, pointing to a closed-shell pathway with an enantiodetermining migratory insertion step, where stereoinduction arises from synergistic interactions between the sterically bulky achiral sulfonamide directing group and the hemilabile bidentate ligand.
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Affiliation(s)
- Omar Apolinar
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Taeho Kang
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Turki M Alturaifi
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Pranali G Bedekar
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Camille Z Rubel
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Joseph Derosa
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Brittany B Sanchez
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Quynh Nguyen Wong
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Emily J Sturgell
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Jason S Chen
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Steven R Wisniewski
- Chemical Process Development Bristol Myers Squibb, One Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Keary M Engle
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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4
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Khalifa A, Redmond R, Sánchez-Sanz G, Evans P. Reduction of Substituted Benzo-Fused Cyclic Sulfonamides with Mg-MeOH: An Experimental and Computational Study. J Org Chem 2022; 87:12087-12095. [PMID: 36049485 PMCID: PMC9486945 DOI: 10.1021/acs.joc.2c01169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
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A study involving the use of Mg-MeOH for the double reductive
cleavage
of both N–S and C–S bonds in a series of 11 benzo-fused
cyclic sulfonamides is reported. Examples where the sulfonamide nitrogen
atom is part of a pyrrolidine ring effectively undergo reduction,
as long as a methoxy substituent is not para-positioned
in the aromatic ring, relative to the sulfonyl group. In contrast,
if the nitrogen atom is contained within an aromatic ring (pyrrole
or indole), the presence of a para-methoxy substituent
does not prohibit reduction. If deuterated methanol is used, aromatic ortho-deuterium incorporation was observed. To better understand
how structure affects reactivity, density functional theory calculations
were performed using three functionals. Results using CAM-B3LYP were
found to best correlate with experimental observations, and these
demonstrate the impact that the different aromatic substitution patterns
and types of N-atom have on the lowest unoccupied molecular orbital
(LUMO) energies and adiabatic electron affinities.
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Affiliation(s)
- Aisha Khalifa
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Dublin D04 N2E5, Ireland
| | - Robert Redmond
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Dublin D04 N2E5, Ireland
| | - Goar Sánchez-Sanz
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Dublin D04 N2E5, Ireland
| | - Paul Evans
- Centre for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Dublin D04 N2E5, Ireland
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5
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Li Y, Loureiro A, Nguyen M, Laurent M, Bijani C, Benoit‐Vical F, Robert A, Liu Y, Meunier B. Synthesis and Antimalarial Activities of New Hybrid Atokel Molecules. ChemistryOpen 2022; 11:e202200064. [PMID: 35543215 PMCID: PMC9092290 DOI: 10.1002/open.202200064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 03/31/2022] [Indexed: 11/11/2022] Open
Abstract
The currently spreading resistance of the malaria parasite Plasmodium falciparum to artemisinin-based combination therapies makes an urgent need for new efficient drugs. Aiming to kill artemisinin-resistant Plasmodium, a series of novel hybrid drugs named Atokels were synthesized and characterized. Atokels are based on an 8-amino- or 8-hydroxyquinoline entity covalently bound to a 1,4-naphthoquinone through a polyamine linker. These drugs have been designed to target the parasite mitochondrion by their naphthoquinone moiety reminiscent of the antimalarial drug atovaquone, and to trigger a damaging oxidative stress due to their ability to chelate metal ions in order to generate redox active complexes in situ. The most effective Atokel drug shown a promising antimalarial activity (IC50 =622 nm on an artemisinin-resistant P. falciparum strain) and no cytotoxicity at 50 μm indicating a specific antiplasmodial mode of action.
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Affiliation(s)
- Youzhi Li
- Guangdong University of TechnologySchool of Chemical Engineering and Light Industryno. 100 Waihuan Xi road Education Mega CenterGuangzhou510006P. R. China
| | - Anthony Loureiro
- Laboratoire de Chimie de Coordination du CNRSLCC–CNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 4409931077Toulouse cedex 4France
- New antimalarial molecules and pharmacological approachesMAAPInserm ER1289ToulouseFrance
| | - Michel Nguyen
- Laboratoire de Chimie de Coordination du CNRSLCC–CNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 4409931077Toulouse cedex 4France
- New antimalarial molecules and pharmacological approachesMAAPInserm ER1289ToulouseFrance
- Institut de Pharmacologie et de Biologie StructuraleIPBSCNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 6418231077Toulouse cedex 4France
| | - Marion Laurent
- Laboratoire de Chimie de Coordination du CNRSLCC–CNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 4409931077Toulouse cedex 4France
- New antimalarial molecules and pharmacological approachesMAAPInserm ER1289ToulouseFrance
- Institut de Pharmacologie et de Biologie StructuraleIPBSCNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 6418231077Toulouse cedex 4France
| | - Christian Bijani
- Laboratoire de Chimie de Coordination du CNRSLCC–CNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 4409931077Toulouse cedex 4France
| | - Françoise Benoit‐Vical
- Laboratoire de Chimie de Coordination du CNRSLCC–CNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 4409931077Toulouse cedex 4France
- New antimalarial molecules and pharmacological approachesMAAPInserm ER1289ToulouseFrance
- Institut de Pharmacologie et de Biologie StructuraleIPBSCNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 6418231077Toulouse cedex 4France
| | - Anne Robert
- Laboratoire de Chimie de Coordination du CNRSLCC–CNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 4409931077Toulouse cedex 4France
- New antimalarial molecules and pharmacological approachesMAAPInserm ER1289ToulouseFrance
| | - Yan Liu
- Guangdong University of TechnologySchool of Chemical Engineering and Light Industryno. 100 Waihuan Xi road Education Mega CenterGuangzhou510006P. R. China
| | - Bernard Meunier
- Guangdong University of TechnologySchool of Chemical Engineering and Light Industryno. 100 Waihuan Xi road Education Mega CenterGuangzhou510006P. R. China
- Laboratoire de Chimie de Coordination du CNRSLCC–CNRSUniversité de ToulouseUniversité Paul Sabatier205 route de Narbonne, BP 4409931077Toulouse cedex 4France
- New antimalarial molecules and pharmacological approachesMAAPInserm ER1289ToulouseFrance
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6
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Logvinenko IG, Kondratov IS, Pridma SO, Tolmachova NA, Morev RN, Dolovanyuk VG, Boretskyi AL, Stepanyuk RO, Trofimchuk SA, Mück-Lichtenfeld C, Daniliuc CG, Haufe G. Synthesis and physical chemical properties of CF3O-containg secondary amines – perspective building blocks for Drug Discovery. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.109990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Kooli A, Wesenberg L, Beslać M, Krech A, Lopp M, Noёl T, Ošeka M. Electrochemical Hydroxylation of Electron‐Rich Arenes in Continuous‐Flow. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Anni Kooli
- Tallinn University of Technology: Tallinna Tehnikaulikool Department of Chemistry and Biotechnology ESTONIA
| | - Lars Wesenberg
- University of Amsterdam: Universiteit van Amsterdam Van't Hoff Institute for Molecular Sciences (HIMS) NETHERLANDS
| | - Marko Beslać
- TU/e: Technische Universiteit Eindhoven Department of Chemical Engineering and Chemistry NETHERLANDS
| | - Anastasiya Krech
- Tallinn University of Technology: Tallinna Tehnikaulikool Department of Chemistry and Biotechnology ESTONIA
| | - Margus Lopp
- Tallinn University of Technology: Tallinna Tehnikaulikool Department of Chemistry and Biotechnology ESTONIA
| | - Timothy Noёl
- University of Amsterdam: Universiteit van Amsterdam Van't Hoff Institute for Molecular Sciences (HIMS) NETHERLANDS
| | - Maksim Ošeka
- Tallinn University of Technology Department of Chemistry and Biotechnology Akadeemia tee 15 12618 Tallinn ESTONIA
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8
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Usuba J, Fukazawa A. Thiophene-Fused 1,4-Diazapentalene: A Stable C=N-Containing π-Conjugated System with Restored Antiaromaticity. Chemistry 2021; 27:16127-16134. [PMID: 34605567 DOI: 10.1002/chem.202103122] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Indexed: 11/07/2022]
Abstract
A thiophene-fused 1,4-diazapentalene (TAP) was rationally designed and synthesized as a C=N-containing 4n π-electron system that exhibits restored antiaromaticity impaired by the doping with C=N bonds. X-ray crystallographic analysis and quantum chemical calculations revealed that the annulation of thiophene rings with the 1,4-diazapentalene moiety resulted in a much higher antiaromaticity than the pristine 1,4-diazapentalene. These effects can be ascribed to the reduced bond alternation of the eight-membered-ring periphery caused by stabilization of the less-stable bond-shifted resonance structure upon increasing the degree of substitution of imine moieties. Consequently, TAP underwent facile hydrogenation even under mild conditions because of its pronounced antiaromaticity and the high aromaticity of the corresponding hydrogenated product H2 -TAP. In addition, the electrophilic C=N moieties in TAP led to the formation of a dense π-stacked structure. These results highlight the effect of partial replacement of C=C bonds with C=N bonds in antiaromatic π-electron systems.
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Affiliation(s)
- Junichi Usuba
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) Institute for Advanced Study, Kyoto University Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan.,Department of Chemistry Graduate School of Science, Nagoya University Furo, Chikusa, Nagoya, 464-8602, Japan
| | - Aiko Fukazawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) Institute for Advanced Study, Kyoto University Yoshida, Sakyo-ku, Kyoto, 606-8501, Japan
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9
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Chu XQ, Ge D, Cui YY, Shen ZL, Li CJ. Desulfonylation via Radical Process: Recent Developments in Organic Synthesis. Chem Rev 2021; 121:12548-12680. [PMID: 34387465 DOI: 10.1021/acs.chemrev.1c00084] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
As the "chemical chameleon", sulfonyl-containing compounds and their variants have been merged with various types of reactions for the efficient construction of diverse molecular architectures by taking advantage of their incredible reactive flexibility. Currently, their involvement in radical transformations, in which the sulfonyl group typically acts as a leaving group via selective C-S, N-S, O-S, S-S, and Se-S bond cleavage/functionalization, has facilitated new bond formation strategies which are complementary to classical two-electron cross-couplings via organometallic or ionic intermediates. Considering the great influence and synthetic potential of these novel avenues, we summarize recent advances in this rapidly expanding area by discussing the reaction designs, substrate scopes, mechanistic studies, and their limitations, outlining the state-of-the-art processes involved in radical-mediated desulfonylation and related transformations. With a specific emphasis on their synthetic applications, we believe this review will be useful for medicinal and synthetic organic chemists who are interested in radical chemistry and radical-mediated desulfonylation in particular.
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Affiliation(s)
- Xue-Qiang Chu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Danhua Ge
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Ying Cui
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhi-Liang Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis, McGill University, Montreal, Quebec H3A 0B8, Canada
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10
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Li C, Huang Y, Cao S, Luo Y, Zhang Y, Yang G. A robust and facile method for desulfonation to amines. Org Chem Front 2021. [DOI: 10.1039/d1qo01190a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this study, a robust and facile method for desulfonation to achieve secondary amines is demonstrated.
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Affiliation(s)
- Chen Li
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
| | - Yilei Huang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
| | - Sheng Cao
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
| | - Yunhao Luo
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
| | - Ying Zhang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
| | - Guang Yang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300071, People's Republic of China
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11
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Ghosh A, Tan NCS, Shi RRS, Webster RD, Steele TWJ. Optimizing the Reduction Potential of Sulfonamides on Polyamidoamine Dendrimers. ChemElectroChem 2020. [DOI: 10.1002/celc.202001395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Animesh Ghosh
- School of Materials Science and Engineering (MSE) Nanyang Technological University (NTU) Singapore 639798
| | - Nigel C. S. Tan
- School of Materials Science and Engineering (MSE) Nanyang Technological University (NTU) Singapore 639798
| | - Raymond R. S. Shi
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371
| | - Richard D. Webster
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371
| | - Terry W. J. Steele
- School of Materials Science and Engineering (MSE) Nanyang Technological University (NTU) Singapore 639798
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12
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Sun W, Chen X, Hu Y, Geng H, Jiang Y, Zhou Y, Zhu W, Hu M, Hu H, Wang X, Wang X, Zhang S, Hu Y. A NaH-promoted N-detosylation reaction of diverse p-toluenesulfonamides. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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13
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Heredia MD, Guerra WD, Barolo SM, Fornasier SJ, Rossi RA, Budén ME. Transition-Metal-Free and Visible-Light-Mediated Desulfonylation and Dehalogenation Reactions: Hantzsch Ester Anion as Electron and Hydrogen Atom Donor. J Org Chem 2020; 85:13481-13494. [DOI: 10.1021/acs.joc.0c01523] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Micaela D. Heredia
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - Walter D. Guerra
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - Silvia M. Barolo
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - Santiago J. Fornasier
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - Roberto A. Rossi
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
| | - María E. Budén
- INFIQC, Facultad de Ciencias Quı́micas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
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14
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Nimje RY, Vytla D, Kuppusamy P, Velayuthaperumal R, Jarugu LB, Reddy CA, Chikkananjaiah NK, Rampulla RA, Cavallaro CL, Li J, Mathur A, Gupta A, Roy A. Synthesis of Differentially Protected Azatryptophan Analogs via Pd 2(dba) 3/XPhos Catalyzed Negishi Coupling of N-Ts Azaindole Halides with Zinc Derivative from Fmoc-Protected tert-Butyl ( R)-2-Amino-3-iodopropanoate. J Org Chem 2020; 85:11519-11530. [PMID: 32786620 DOI: 10.1021/acs.joc.0c00973] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Unnatural amino acids play an important role in peptide based drug discovery. Herein, we report a class of differentially protected azatryptophan derivatives synthesized from N-tosyl-3-haloazaindoles 1 and Fmoc-protected tert-butyl iodoalanine 2 via a Negishi coupling. Through ligand screening, Pd2(dba)3/XPhos was found to be a superior catalyst for the coupling of 1 with the zinc derivative of 2 to give tert-butyl (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(1-tosyl-1H-pyrrolo[2,3-b]pyridin-3-yl)propanoate derivatives 3 in 69-91% isolated yields. In addition, we have demonstrated that the protecting groups, namely, Ts, Fmoc, and tBu, can be easily removed selectively.
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Affiliation(s)
- Roshan Y Nimje
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Biocon Park, Plot No. 2 and 3, Bommasandra-Jigani Road, Bangalore-560 100, India
| | - Devaiah Vytla
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Biocon Park, Plot No. 2 and 3, Bommasandra-Jigani Road, Bangalore-560 100, India
| | - Prakasam Kuppusamy
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Biocon Park, Plot No. 2 and 3, Bommasandra-Jigani Road, Bangalore-560 100, India
| | - Rajeswari Velayuthaperumal
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Biocon Park, Plot No. 2 and 3, Bommasandra-Jigani Road, Bangalore-560 100, India
| | - Lokesh Babu Jarugu
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Biocon Park, Plot No. 2 and 3, Bommasandra-Jigani Road, Bangalore-560 100, India
| | - China Anki Reddy
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Biocon Park, Plot No. 2 and 3, Bommasandra-Jigani Road, Bangalore-560 100, India
| | - Nanjundaswamy Kanikahalli Chikkananjaiah
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Biocon Park, Plot No. 2 and 3, Bommasandra-Jigani Road, Bangalore-560 100, India
| | - Richard A Rampulla
- Small Molecule Drug Discovery, Bristol-Myers Squibb Research and Development, P.O. Box 5400, Princeton, New Jersey 08543-4000, United States
| | - Cullen L Cavallaro
- Small Molecule Drug Discovery, Bristol-Myers Squibb Research and Development, P.O. Box 5400, Princeton, New Jersey 08543-4000, United States
| | - Jianqing Li
- Small Molecule Drug Discovery, Bristol-Myers Squibb Research and Development, 100 Binney Street, Cambridge, Massachusetts 02142, United States
| | - Arvind Mathur
- Small Molecule Drug Discovery, Bristol-Myers Squibb Research and Development, P.O. Box 5400, Princeton, New Jersey 08543-4000, United States
| | - Anuradha Gupta
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Biocon Park, Plot No. 2 and 3, Bommasandra-Jigani Road, Bangalore-560 100, India
| | - Amrita Roy
- Department of Discovery Synthesis, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Biocon Park, Plot No. 2 and 3, Bommasandra-Jigani Road, Bangalore-560 100, India
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15
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Discovery and characterization of an acridine radical photoreductant. Nature 2020; 580:76-80. [PMID: 32238940 PMCID: PMC7138348 DOI: 10.1038/s41586-020-2131-1] [Citation(s) in RCA: 219] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 02/18/2020] [Indexed: 11/12/2022]
Abstract
Photoinduced electron transfer (PET) is a phenomenon wherein the absorption of light by a chemical species provides an energetic driving force for an electron transfer reaction.1–4 This mechanism is relevant in many areas of chemistry, including the study of natural and artificial photosynthesis, photovoltaics, and photosensitive materials. In recent years, research in the area of photoredox catalysis has leveraged PET for the catalytic generation of both neutral and charged organic free radical species. These technologies have enabled a wide range of previously inaccessible chemical transformations and have seen widespread utilization in both academic and industrial settings. These reactions are often catalyzed by visible-light absorbing organic molecules or transition-metal complexes of ruthenium, iridium, chromium, or copper.5,6 While a wide variety of closed shell organic molecules have been shown to behave as competent electron transfer catalysts in photoredox reactions, there are only limited reports of PET reactions involving neutral organic radicals as an excited state donor or acceptor. This is perhaps somewhat unsurprising in light of previously reported doublet excited state lifetimes for neutral organic radicals, which are typically several orders of magnitude shorter than singlet lifetimes for known transition metal photoredox catalysts.7–11 Herein we document the discovery, characterization, and reactivity of a neutral acridine radical with a maximum excited state oxidation potential of −3.36 V vs. SCE: significantly more reducing than elemental lithium and marking it as one of the most potent chemical reductants reported.12 Spectroscopic, computational, and chemical studies indicate that the formation of a twisted intramolecular charge transfer species enables the population of higher energy doublet excited states, leading to the observed potent photoreductant behavior. We demonstrate that this catalytically-generated PET catalyst facilitates several chemical reactions that typically require alkali metal reductants and bodes well for the adoption of this system in additional organic transformations requiring dissolving metal reductants.
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16
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Rowland CA, Yap GPA, Bloch ED. Novel syntheses of carbazole-3,6-dicarboxylate ligands and their utilization for porous coordination cages. Dalton Trans 2020; 49:16340-16347. [DOI: 10.1039/d0dt01149e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A benzyl-protecting strategy affords access to large quantities of carbazole-based ligands or molecular adsorbents with tunable inter-cage interactions.
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Affiliation(s)
- Casey A. Rowland
- Department of Chemistry and Biochemistry
- University of Delaware
- Newark
- USA
| | - Glenn P. A. Yap
- Department of Chemistry and Biochemistry
- University of Delaware
- Newark
- USA
| | - Eric D. Bloch
- Department of Chemistry and Biochemistry
- University of Delaware
- Newark
- USA
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17
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Khalifa A, Evans P. The Titanium-Mediated Double Reductive Cleavage of Cyclic Sulfonamides for the Synthesis of Aryl Pyrrolidines. J Org Chem 2019; 84:2969-2975. [PMID: 30681337 DOI: 10.1021/acs.joc.8b02827] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Reduction of a range of benzo-fused cyclic sulfonamides has been accomplished using low-valent titanium. This operationally simple method generates the corresponding aryl-substituted cyclic amines, typically, with good conversion. Notably, unlike our previous Li-NH3-based method, loss of heteroatom-based substituents (X) on the aromatic ring does not readily occur, and the robustness of this method was demonstrated with a synthesis of the Sceletium alkaloid mesembrane.
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Affiliation(s)
- Aisha Khalifa
- School of Chemistry, Center for Synthesis and Chemical Biology , University College Dublin , Dublin D04 N2E5 , Ireland
| | - Paul Evans
- School of Chemistry, Center for Synthesis and Chemical Biology , University College Dublin , Dublin D04 N2E5 , Ireland
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18
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Marcyk PT, Jefferies LR, AbuSalim DI, Pink M, Baik M, Cook SP. Stereoinversion of Unactivated Alcohols by Tethered Sulfonamides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812894] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Paul T. Marcyk
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Latisha R. Jefferies
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Deyaa I. AbuSalim
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Maren Pink
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
| | - Mu‐Hyun Baik
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
- Center for Catalytic Hydrocarbon Functionalizations Institute for Basic Science (IBS) Daejeon 34141 Republic of Korea
| | - Silas P. Cook
- Department of Chemistry Indiana University 800 East Kirkwood Avenue Bloomington IN 47405 USA
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19
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Marcyk PT, Jefferies LR, AbuSalim DI, Pink M, Baik MH, Cook SP. Stereoinversion of Unactivated Alcohols by Tethered Sulfonamides. Angew Chem Int Ed Engl 2019; 58:1727-1731. [PMID: 30536739 DOI: 10.1002/anie.201812894] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 12/07/2018] [Indexed: 12/23/2022]
Abstract
The direct, catalytic substitution of unactivated alcohols remains an undeveloped area of organic synthesis. Moreover, catalytic activation of this difficult electrophile with predictable stereo-outcomes presents an even more formidable challenge. Described herein is a simple iron-based catalyst system which provides the mild, direct conversion of secondary and tertiary alcohols to sulfonamides. Starting from enantioenriched alcohols, the intramolecular variant proceeds with stereoinversion to produce enantioenriched 2- and 2,2-subsituted pyrrolidines and indolines, without prior derivatization of the alcohol or solvolytic conditions.
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Affiliation(s)
- Paul T Marcyk
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Latisha R Jefferies
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Deyaa I AbuSalim
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA.,Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Maren Pink
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
| | - Silas P Cook
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, IN, 47405, USA
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20
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Bisz E, Szostak M. Iron-Catalyzed C(sp2)–C(sp3) Cross-Coupling of Chlorobenzenesulfonamides with Alkyl Grignard Reagents: Entry to Alkylated Aromatics. J Org Chem 2018; 84:1640-1646. [DOI: 10.1021/acs.joc.8b02886] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Elwira Bisz
- Department of Chemistry, Opole University, 48 Oleska Street, Opole 45-052, Poland
| | - Michal Szostak
- Department of Chemistry, Opole University, 48 Oleska Street, Opole 45-052, Poland
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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21
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Okamoto S, Yamada T, Tanabe YK, Sakai M. Alkyne [2 + 2 + 2] Cyclotrimerization Catalyzed by a Low-Valent Titanium Reagent Derived from CpTiX3 (X = Cl, O-i-Pr), Me3SiCl, and Mg or Zn. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00678] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sentaro Okamoto
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Takeshi Yamada
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Yu-ki Tanabe
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Masaki Sakai
- Department of Materials and Life Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
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22
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Hasegawa E, Nagakura Y, Izumiya N, Matsumoto K, Tanaka T, Miura T, Ikoma T, Iwamoto H, Wakamatsu K. Visible Light and Hydroxynaphthylbenzimidazoline Promoted Transition-Metal-Catalyst-Free Desulfonylation of N-Sulfonylamides and N-Sulfonylamines. J Org Chem 2018; 83:10813-10825. [DOI: 10.1021/acs.joc.8b01536] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eietsu Hasegawa
- Department of Chemistry, Faculty of Science, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan
| | - Yuto Nagakura
- Department of Chemistry, Faculty of Science, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan
| | - Norihiro Izumiya
- Department of Chemistry, Faculty of Science, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan
| | - Keisuke Matsumoto
- Department of Chemistry, Faculty of Science, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan
| | - Tsukasa Tanaka
- Department of Chemistry, Faculty of Science, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan
| | - Tomoaki Miura
- Department of Chemistry, Faculty of Science, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan
| | - Tadaaki Ikoma
- Department of Chemistry, Faculty of Science, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan
- Center for Coordination of Research Facilities, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan
| | - Hajime Iwamoto
- Department of Chemistry, Faculty of Science, Niigata University, 8050 Ikarashi-2, Nishi-ku, Niigata 950-2181, Japan
| | - Kan Wakamatsu
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridaicho, Kita-ku, Okayama 700-0005, Japan
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23
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Belding L, Guest M, Le Sueur R, Dudding T. Fluorescence of Cyclopropenium Ion Derivatives. J Org Chem 2018; 83:6489-6497. [DOI: 10.1021/acs.joc.8b00770] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Lee Belding
- Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Matt Guest
- Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Richard Le Sueur
- Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Travis Dudding
- Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
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24
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Ling Z, Xie F, Gridnev ID, Terada M, Zhang W. Cu-Catalyzed switchable synthesis of functionalized pyridines and pyrroles. Chem Commun (Camb) 2018; 54:9446-9449. [DOI: 10.1039/c8cc05307c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A switchable synthesis of functionalized pyridines and pyrroles via Cu-catalyzed cascade reactions with N-sulfonyl azadienes and alkynes.
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Affiliation(s)
- Zheng Ling
- Shanghai Key Laboratory for Molecular Engineering and Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Fang Xie
- Shanghai Key Laboratory for Molecular Engineering and Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Ilya D. Gridnev
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 9808578
- Japan
| | - Masahiro Terada
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 9808578
- Japan
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering and Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
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25
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Javorskis T, Orentas E. Chemoselective Deprotection of Sulfonamides Under Acidic Conditions: Scope, Sulfonyl Group Migration, and Synthetic Applications. J Org Chem 2017; 82:13423-13439. [DOI: 10.1021/acs.joc.7b02507] [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)
- Tomas Javorskis
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
| | - Edvinas Orentas
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
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26
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Practical and Sustainable Synthesis of Optically Pure Levocabastine, a H₁ Receptor Antagonist. Molecules 2017; 22:molecules22111971. [PMID: 29140307 PMCID: PMC6150193 DOI: 10.3390/molecules22111971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 11/11/2017] [Indexed: 11/17/2022] Open
Abstract
A practical and sustainable method for the synthesis of levocabastine hydrochloride (1), a H1 receptor antagonist for the treatment of allergic conjunctivitis, that can be applied to the industrial production of the compound has been developed. Substantial improvements over the previously reported procedure are achieved via efficient preparation of an optically active key intermediate (5) without chiral resolution and with a more effective detosylation, which complements the previous procedure. Notably, our process requires no chromatographic purification and provides levocabastine hydrochloride in greater than 99.5% purity in a 14.2% overall yield.
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27
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Li K, Weber AE, Tseng L, Malcolmson SJ. Diastereoselective and Enantiospecific Synthesis of 1,3-Diamines via 2-Azaallyl Anion Benzylic Ring-Opening of Aziridines. Org Lett 2017; 19:4239-4242. [DOI: 10.1021/acs.orglett.7b01886] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Kangnan Li
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Alexandria E. Weber
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Luke Tseng
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Steven J. Malcolmson
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
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28
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Yeh PP, Taylor JE, Stark DG, Daniels DSB, Fallan C, Walton JC, Smith AD. N- to C-sulfonyl photoisomerisation of dihydropyridinones: a synthetic and mechanistic study. Org Biomol Chem 2017; 15:8914-8922. [DOI: 10.1039/c7ob01699a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The scope and limitations of a photoinitiated N- to C-sulfonyl migration process within a range of dihydropyridinones is assessed.
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Affiliation(s)
- Pei-Pei Yeh
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | - James E. Taylor
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | - Daniel G. Stark
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | | | - Charlene Fallan
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | - John C. Walton
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | - Andrew D. Smith
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
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29
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Pergomet JL, Larghi EL, Kaufman TS, Bracca ABJ. First total synthesis of the only known 2-isopropyliden-2H-benzofuran-3-one isolated from V. luetzelburgii. RSC Adv 2017. [DOI: 10.1039/c6ra28587b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The first total synthesis of the unique isopropyliden-2H-benzofuran-3-one, isolated from Verbesina luetzelburgii, is reported in racemic and a chiral form.
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Affiliation(s)
- Jorgelina L. Pergomet
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
| | - Enrique L. Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
| | - Teodoro S. Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
| | - Andrea B. J. Bracca
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
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30
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Zhang X, Zhou G, Zhang Y, Zhang-Negrerie D, Du Y, Zhao K. Ring-Contraction Disproportionation/Spirocyclization Cascade Reaction of Isochromeno[4,3-b]indol-5(11H)-ones: Synthesis of N-Unsubstituted Spirocycles. J Org Chem 2016; 81:11397-11403. [DOI: 10.1021/acs.joc.6b01957] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiang Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Guangshuai Zhou
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yong Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Daisy Zhang-Negrerie
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Kang Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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31
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Catalytic asymmetric synthesis of axially chiral 2-amino-1,1′-biaryl compounds by phase-transfer-catalyzed kinetic resolution and desymmetrization. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.10.074] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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32
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Madhavan S, Takagi H, Fukuda S, Okamoto S. Low-valent titanium-catalyzed deprotection of allyl- and propargyl-carbamates to amines. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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33
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Okamoto S. Synthetic Reactions Using Low-valent Titanium Reagents Derived from Ti(OR)4or CpTiX3(X = O-i-Pr or Cl) in the Presence of Me3SiCl and Mg. CHEM REC 2016; 16:857-72. [DOI: 10.1002/tcr.201500277] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Indexed: 02/02/2023]
Affiliation(s)
- Sentaro Okamoto
- Department of Materials and Life Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-868 Japan
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34
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Gao Y, Lu G, Zhang P, Zhang L, Tang G, Zhao Y. A Cascade Phosphinoylation/Cyclization/Desulfonylation Process for the Synthesis of 3-Phosphinoylindoles. Org Lett 2016; 18:1242-5. [DOI: 10.1021/acs.orglett.6b00056] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuzhen Gao
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Guozhang Lu
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Pengbo Zhang
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Liangliang Zhang
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Guo Tang
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
| | - Yufen Zhao
- Department
of Chemistry, College of Chemistry and Chemical Engineering, and the
Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, Fujian 361005, China
- Key
Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
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35
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Heredia DA, Larghi EL, Kaufman TS. A Straightforward Synthesis of 5-Methylaaptamine from Eugenol, Employing a 6π-Electrocyclization Reaction of a 1-Azatriene. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501566] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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36
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Fra L, Muñiz K. Indole Synthesis through Sequential Electrophilic N−H and C−H Bond Activation Using Iodine(III) Reactivity. Chemistry 2016; 22:4351-4. [PMID: 26690791 DOI: 10.1002/chem.201504974] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Laura Fra
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
| | - Kilian Muñiz
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- Catalan Institution for Research and Advanced Studies (ICREA); Pg. Lluís Companys 23 08010 Barcelona Spain
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37
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Reichart B, Guedes de la Cruz G, Zangger K, Kappe CO, Glasnov T. Copper/Nafion-Catalyzed Hydroarylation Process Involving Ketenimine Intermediates: A Novel and Synthetic Approach to 4-Sulfonamidoquinoline-2-ones and Derivatives Thereof. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500942] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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38
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Giraud F, Bourhis M, Ebrahimi E, Herfindal L, Choudhury RR, Bjørnstad R, Døskeland SO, Anizon F, Moreau P. Synthesis and activities of new indolopyrrolobenzodiazepine derivatives toward acute myeloid leukemia cells. Bioorg Med Chem 2015; 23:7313-23. [DOI: 10.1016/j.bmc.2015.10.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/15/2015] [Accepted: 10/22/2015] [Indexed: 01/10/2023]
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39
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Trost BM, Hung CI(J, Koester DC, Miller Y. Development of Non-C2-symmetric ProPhenol Ligands. The Asymmetric Vinylation of N-Boc Imines. Org Lett 2015. [DOI: 10.1021/acs.orglett.5b01755] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Chao-I (Joey) Hung
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Dennis C. Koester
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - Yan Miller
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
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40
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Lin W, Hu M, Feng X, Cao C, Huang Z, Shi D. A Facile One-Step Synthesis of 2-Arylindazoles via Reductive Cyclization of N-(2-nitroarylidene)amines. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2221] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wei Lin
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Minghua Hu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Xian Feng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Chengpao Cao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Zhibin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Daqing Shi
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
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41
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Organic hypervalent iodine(III) catalyzed ipso-hydroxylation of aryl- and alkylboronic acids/esters. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.01.118] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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42
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Sohail M, Zhang Y, Liu W, Chen Q, Wang L, Zhao ZK. Four-component α-bromo-β-phosphoalkoxylation of aromatic α,β-unsaturated carbonyl compounds. RSC Adv 2015. [DOI: 10.1039/c4ra12417k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Novel α-bromo-β-phosphoalkoxylated carbonyl compounds were produced in moderate to excellent yields via highly selective four-component reaction involving NBS, a cyclic ether, an organic phosphate and an aromatic α,β-unsaturated carbonyl compound.
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Affiliation(s)
- Muhammad Sohail
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116032
- China
| | - Yixin Zhang
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116032
- China
| | - Wujun Liu
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116032
- China
| | - Qin Chen
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116032
- China
| | - Lei Wang
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116032
- China
| | - Zongbao K. Zhao
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116032
- China
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43
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Sohail M, Zhang Y, Sun G, Guo X, Liu W, Liu C, Zhao ZK. Four-component reaction leading to highly functionalized sulfoalkoxy carbonyl compounds. Chem Commun (Camb) 2015; 51:4774-7. [DOI: 10.1039/c4cc10403j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four components together: a new paradigm of four component reaction brings α-bromo-β-sulfoalkoxyl carbonyl compounds with good stereocontrol in moderate to excellent yields.
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Affiliation(s)
- Muhammad Sohail
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116023
- China
| | - Yixin Zhang
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116023
- China
| | - Guangwei Sun
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116023
- China
| | - Xin Guo
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116023
- China
| | - Wujun Liu
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116023
- China
| | - Chang Liu
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116023
- China
| | - Zongbao K. Zhao
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- CAS
- Dalian 116023
- China
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44
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Yoshiki M, Ishibashi R, Yamada Y, Hanamoto T. TiF4-mediated regioselective cycloaddition of 2-(trifluoromethyl)-N-tosylaziridine to nitriles. Org Lett 2014; 16:5509-11. [PMID: 25353320 DOI: 10.1021/ol502331a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the first [3 + 2] cycloaddition of 2-(trifluoromethyl)-N-tosylaziridine to nitriles using TiF4 as an effective Lewis acid under mild reaction conditions. The reaction proceeded smoothly and afforded the corresponding 4-(trifluoromethyl)-1,3-imidazolines in good yields and with excellent regioselectivity.
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Affiliation(s)
- Michiya Yoshiki
- Department of Chemistry and Applied Chemistry, Saga University , Honjyo-machi 1, Saga 840-8502, Japan
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45
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Jensen KL, Standley EA, Jamison TF. Highly regioselective nickel-catalyzed cross-coupling of N-tosylaziridines and alkylzinc reagents. J Am Chem Soc 2014; 136:11145-52. [PMID: 25055180 DOI: 10.1021/ja505823s] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Herein, we report the first ligand-controlled, nickel-catalyzed cross-coupling of aliphatic N-tosylaziridines with aliphatic organozinc reagents. The reaction protocol displays complete regioselectivity for reaction at the less hindered C-N bond, and the products are furnished in good to excellent yield for a broad selection of substrates. Moreover, we have developed an air-stable nickel(II) chloride/ligand precatalyst that can be handled and stored outside a glovebox. In addition to increasing the activity of this catalyst system, this also greatly improves the practicality of this reaction, as the use of the very air-sensitive Ni(cod)2 is avoided. Finally, mechanistic investigations, including deuterium-labeling studies, show that the reaction proceeds with overall inversion of configuration at the terminal position of the aziridine by way of aziridine ring opening by Ni (inversion), transmetalation (retention), and reductive elimination (retention).
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Affiliation(s)
- Kim L Jensen
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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46
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Lin W, Hu MH, Feng X, Fu L, Cao CP, Huang ZB, Shi DQ. Selective reduction of carbonyl groups in the presence of low-valent titanium reagents. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.072] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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47
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Moriai R, Naito YS, Nomura R, Funyu S, Ishitsuka KI, Asano N, Okamoto S. Design and synthesis of 2-(1,3-dialkoxy-2-methylpropan-2-yl)-1,3-diarylpropanes as tethering units for folded H-stacking polymers. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.03.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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48
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Cheng DJ, Yan L, Tian SK, Wu MY, Wang LX, Fan ZL, Zheng SC, Liu XY, Tan B. Highly Enantioselective Kinetic Resolution of Axially Chiral BINAM Derivatives Catalyzed by a Brønsted Acid. Angew Chem Int Ed Engl 2014; 53:3684-7. [DOI: 10.1002/anie.201310562] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 01/18/2014] [Indexed: 11/11/2022]
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49
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Cheng DJ, Yan L, Tian SK, Wu MY, Wang LX, Fan ZL, Zheng SC, Liu XY, Tan B. Highly Enantioselective Kinetic Resolution of Axially Chiral BINAM Derivatives Catalyzed by a Brønsted Acid. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310562] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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50
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Hirotaki K, Yamada Y, Hanamoto T. Diethylzinc-Promoted Synthesis of Trifluromethyl-Containing Tryptamine Analogues from Indoles and 2-Trifluromethyl-N-(4-Toluenesulfonyl)-Aziridine. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201300286] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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