1
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Huang C, Yang T, Jia J, Fu S, Hong B, Wu F, Ni F. Selenium-catalyzed allylic C-H phosphoramidation of alkenes. Org Biomol Chem 2024; 22:4882-4887. [PMID: 38809155 DOI: 10.1039/d4ob00638k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
We report herein a synthesis of allylic phosphoramidates from alkenes by selenium-catalyzed allylic C-H derivatization. This method features mild conditions, broad substrate scope, and high functional group tolerance, enabling late-stage modification of a number of complex substrates. In addition, this protocol was applied to modify caryophyllene and produced a photoaffinity probe capable of proteomic target labeling in live HeLa cells.
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Affiliation(s)
- Chengjie Huang
- Institute of Drug Discovery Technology and Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo, Zhejiang 315211, China.
| | - Tao Yang
- Institute of Drug Discovery Technology and Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo, Zhejiang 315211, China.
| | - Jingyang Jia
- Institute of Drug Discovery Technology and Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo, Zhejiang 315211, China.
| | - Songsen Fu
- Institute of Drug Discovery Technology and Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo, Zhejiang 315211, China.
| | - Bang Hong
- LeadArt Technologies Ltd, Ningbo, 315211, China
| | - Fan Wu
- Institute of Drug Discovery Technology and Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo, Zhejiang 315211, China.
| | - Feng Ni
- Institute of Drug Discovery Technology and Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo, Zhejiang 315211, China.
- LeadArt Technologies Ltd, Ningbo, 315211, China
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2
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Cai Y, Gaurav G, Ritter T. 1,4-Aminoarylation of Butadienes via Photoinduced Palladium Catalysis. Angew Chem Int Ed Engl 2024; 63:e202311250. [PMID: 38334292 DOI: 10.1002/anie.202311250] [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: 08/03/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/10/2024]
Abstract
A visible-light-induced, three-component palladium-catalyzed 1,4-aminoarylation of butadienes with readily available aryl halides and aliphatic amines has been developed, affording allylamines with excellent E-selectivity. The reaction exhibits exceptional control over chemo-, regio-, and stereoselectivity, a broad substrate scope, and high functional group compatibility, as demonstrated by the late-stage functionalization of bioactive molecules. Mechanistic investigations are consistent with a photoinduced radical Pd(0)-Pd(I)-Pd(II)-Pd(0) Heck-Tsuji-Trost allylation cascade.
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Affiliation(s)
- Yuan Cai
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470, Mülheim an der Ruhr, Germany
| | - Gaurav Gaurav
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470, Mülheim an der Ruhr, Germany
| | - Tobias Ritter
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470, Mülheim an der Ruhr, Germany
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3
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Madiu R, Doran EL, Doran JM, Pinarci AA, Dhillon K, Rivera DA, Howard AM, Stroud JL, Moskovitz DA, Finneran SJ, Singer AN, Rossi ME, Moura-Letts G. Synthesis of N-Tosyl Allylic Amines from Substituted Alkenes via Vanadoxaziridine Catalysis. J Org Chem 2024; 89:4001-4008. [PMID: 38407036 PMCID: PMC10949238 DOI: 10.1021/acs.joc.3c02859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 02/27/2024]
Abstract
Herein, we report the catalytic allylic amination of α-methylalkenes with V2O3Dipic2(HMPA)2 and chloramine T as the quantitative source of N. The reaction works with high yields and stereoselectivities for α-methylalkenes. A proposed tosylnitrene-free catalytic cycle involving the formation of vanadoxaziridine complex 1 as the active catalyst and aminovanadation across the substrate as the rate-determining step has been proposed. Initial kinetic and competition experiments provide evidence for the proposed mechanism.
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Affiliation(s)
- Rufai Madiu
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Erin L. Doran
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Jenna M. Doran
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Ali A. Pinarci
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Kiran Dhillon
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Dominic A. Rivera
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Amari M. Howard
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - James L. Stroud
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Dylan A. Moskovitz
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Steven J. Finneran
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Alyssa N. Singer
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Morgan E. Rossi
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
| | - Gustavo Moura-Letts
- Department of Chemistry and
Biochemistry, Rowan University, 201 Mullica Hill Rd., Glassboro, New Jersey 08028, United States
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4
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Landge VG, Mishra A, Thotamune W, Bonds AL, Alahakoon I, Karunarathne A, Young MC. Selective C-H Activation of Unprotected Allylamines by Control of Catalyst Speciation. CHEM CATALYSIS 2023; 3:100809. [PMID: 37982045 PMCID: PMC10653252 DOI: 10.1016/j.checat.2023.100809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
An outstanding challenge in the Pd-catalyzed functionalization of allylamines is the control of stereochemistry. Terminal alkenes preferentially undergo Heck-type reactions, while internal alkenes may undergo a mixture of Heck and C-H activation reactions that give mixtures of stereochemical products. In the case of unprotected allylamines, the challenge in achieving C-H activation is that facile in situ formation of Pd nanoparticles leads to preferential formation of trans rather than cis-substituted products. In this study we have demonstrated the feasibility of using mono-protected amino acid (MPAA) ligands as metal protecting groups to prevent aggregation and reduction, allowing the selective synthesis of free cis-arylated allylamines. This method complements Heck-selective methods, allowing complete stereochemical control over the synthesis of cinnamylamines, an important class of amine that can serve as therapeutics directly or as advanced intermediates. To highlight the utility of the methodology, we have demonstrated rapid access to mu opioid receptor ligands.
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Affiliation(s)
- Vinod G. Landge
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
| | - Ankita Mishra
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
| | - Waruna Thotamune
- Department of Chemistry, Saint Louis University, 3501 Laclede Avenue, St. Louis, MO 63103, USA
| | - Audrey L. Bonds
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
| | - Indunil Alahakoon
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
| | - Ajith Karunarathne
- Department of Chemistry, Saint Louis University, 3501 Laclede Avenue, St. Louis, MO 63103, USA
| | - Michael C. Young
- Department of Chemistry & Biochemistry, School of Green Chemistry & Engineering, The University of Toledo, Toledo, OH 43606, USA
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5
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Lutovsky GA, Plachinski E, Reed NL, Yoon TP. Allylic Amination of Highly Substituted Alkenes Enabled by Photoredox Catalysis and Cu(II)-Mediated Radical-Polar Crossover. Org Lett 2023; 25:4750-4754. [PMID: 37345950 PMCID: PMC10351055 DOI: 10.1021/acs.orglett.3c01774] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
Abstract
Allylic amination reactions enable the conversion of alkene feedstocks into value-added products with significant synthetic versatility. Here we describe a method for allylic amination involving photoredox activation and Cu(II)-mediated radical-polar crossover. A range of structurally varied allylic amines can be accessed using this strategy. The regioselectivity of this process is complementary to those of conventional methods for allylic amination.
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Affiliation(s)
- Grace A. Lutovsky
- Department of Chemistry, University of Wisconsin–Madison 1101 University Avenue, Madison, Wisconsin, 53706
| | - Ellie Plachinski
- Department of Chemistry, University of Wisconsin–Madison 1101 University Avenue, Madison, Wisconsin, 53706
| | - Nicholas L. Reed
- Department of Chemistry, University of Wisconsin–Madison 1101 University Avenue, Madison, Wisconsin, 53706
| | - Tehshik P. Yoon
- Department of Chemistry, University of Wisconsin–Madison 1101 University Avenue, Madison, Wisconsin, 53706
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6
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Xu P, Xie J, Wang DS, Zhang XP. Metalloradical approach for concurrent control in intermolecular radical allylic C-H amination. Nat Chem 2023; 15:498-507. [PMID: 36635599 PMCID: PMC10073309 DOI: 10.1038/s41557-022-01119-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 11/28/2022] [Indexed: 01/13/2023]
Abstract
Although they offer great potentials, the high reactivity and diverse pathways of radical chemistry pose difficult problems for applications in organic synthesis. In addition to the differentiation of multiple competing pathways, the control of various selectivities in radical reactions presents both formidable challenges and great opportunities. To regulate chemoselectivity and regioselectivity, as well as diastereoselectivity and enantioselectivity, calls for the formulation of conceptually new approaches and fundamentally different governing principles. Here we show that Co(II)-based metalloradical catalysis enables the radical chemoselective intermolecular amination of allylic C-H bonds through the employment of modularly designed D2-symmetric chiral amidoporphyrins with a tunable pocket-like environment as the supporting ligand. The reaction exhibits a remarkable convergence of regioselectivity, diastereoselectivity and enantioselectivity in a single catalytic operation. In addition to demonstrating the unique opportunities of metalloradical catalysis in controlling homolytic radical reactions, the Co(II)-catalysed convergent C-H amination offers a route to synthesize valuable chiral α-tertiary amines directly from an isomeric mixture of alkenes.
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Affiliation(s)
- Pan Xu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Boston, MA, USA
| | - Jingjing Xie
- Department of Chemistry, Merkert Chemistry Center, Boston College, Boston, MA, USA
| | - Duo-Sheng Wang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Boston, MA, USA
| | - X Peter Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Boston, MA, USA.
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7
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Obenschain DC, Tabor JR, Michael FE. Metal-Free Intermolecular Allylic C–H Amination of Alkenes Using Primary Carbamates. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Derek C. Obenschain
- Department of Chemistry, University of Washington, B ox 351700, Seattle, Washington 98195-1700, United States
| | - John R. Tabor
- Department of Chemistry, University of Washington, B ox 351700, Seattle, Washington 98195-1700, United States
| | - Forrest E. Michael
- Department of Chemistry, University of Washington, B ox 351700, Seattle, Washington 98195-1700, United States
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8
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Wang J, Xiao R, Lin Z, Zheng Z, Zheng K. Mechanistic and chemoselective investigations on nitrene transfer reactions mediated by a novel iron-mesoionic carbene catalyst. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.112922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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9
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Liu R, Shen ML, Fan LF, Zhou XL, Wang PS, Gong LZ. Palladium-Catalyzed Branch- and Z-Selective Allylic C-H Amination with Aromatic Amines. Angew Chem Int Ed Engl 2023; 62:e202211631. [PMID: 36399016 DOI: 10.1002/anie.202211631] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/19/2022]
Abstract
Allylamines are important building blocks in the synthesis of bioactive compounds. The direct coupling of allylic C-H bonds and commonly available amines is a major synthetic challenge. An allylic C-H amination of 1,4-dienes has been accomplished by palladium catalysis. With aromatic amines, branch-selective allylic aminations are favored to generate thermodynamically unstable Z-allylamines. In addition, more basic aliphatic cyclic amines can also engage in the reaction, but linear dienyl allylic amines are the major products.
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Affiliation(s)
- Rui Liu
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Meng-Lan Shen
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Lian-Feng Fan
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Xiao-Le Zhou
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Pu-Sheng Wang
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
| | - Liu-Zhu Gong
- Department of Chemistry, University of Science and Technology of China, No.96, Jinzhai Road, Baohe District, Hefei, 230026, P. R.China
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10
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Shing Cheung KP, Fang J, Mukherjee K, Mihranyan A, Gevorgyan V. Asymmetric intermolecular allylic C-H amination of alkenes with aliphatic amines. Science 2022; 378:1207-1213. [PMID: 36520916 PMCID: PMC10111612 DOI: 10.1126/science.abq1274] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Aliphatic allylic amines are found in a great variety of complex and biorelevant molecules. The direct allylic C-H amination of alkenes serves as the most straightforward method toward these motifs. However, use of widely available internal alkenes with aliphatic amines in this transformation remains a synthetic challenge. In particular, palladium catalysis faces the twin challenges of inefficient coordination of Pd(II) to internal alkenes but excessively tight and therefore inhibitory coordination of Pd(II) by basic aliphatic amines. We report a general solution to these problems. The developed protocol, in contrast to a classical Pd(II/0) scenario, operates through a blue light-induced Pd(0/I/II) manifold with mild aryl bromide oxidant. This open-shell approach also enables enantio- and diastereoselective allylic C-H amination.
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Affiliation(s)
- Kelvin Pak Shing Cheung
- Department of Chemistry and Biochemistry, The University of
Texas at Dallas, Richardson, TX 75080, USA
| | - Jian Fang
- Department of Chemistry and Biochemistry, The University of
Texas at Dallas, Richardson, TX 75080, USA
| | - Kallol Mukherjee
- Department of Chemistry and Biochemistry, The University of
Texas at Dallas, Richardson, TX 75080, USA
| | - Andranik Mihranyan
- Department of Chemistry and Biochemistry, The University of
Texas at Dallas, Richardson, TX 75080, USA
| | - Vladimir Gevorgyan
- Department of Chemistry and Biochemistry, The University of
Texas at Dallas, Richardson, TX 75080, USA
- Department of Biochemistry, The University of Texas
Southwestern Medical Center, Dallas, TX 75390, USA
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11
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Yang B, Liu X, Yu A, Yang Q, Wang Y. Rhodium(II)-Catalyzed Allylic 1,3-Diamination. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Beiqi Yang
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Xinyu Liu
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Aiwen Yu
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Qi Yang
- College of Chemistry, Sichuan University, Chengdu 610041, China
| | - Yuanhua Wang
- College of Chemistry, Sichuan University, Chengdu 610041, China
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12
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Boquet V, Nasrallah A, Dana AL, Brunard E, Di Chenna PH, Duran FJ, Retailleau P, Darses B, Sircoglou M, Dauban P. Rhodium(II)-Catalyzed Enantioselective Intermolecular Aziridination of Alkenes. J Am Chem Soc 2022; 144:17156-17164. [PMID: 36094904 DOI: 10.1021/jacs.2c07337] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
C4-Symmetrical dirhodium(II) tetracarboxylates are highly efficient catalysts for the asymmetric intermolecular aziridination of substituted alkenes with sulfamates. The reaction proceeds with high levels of efficiency and chemoselectivity to afford aziridines with excellent yields of up to 95% and enantiomeric excesses of up to 99%. The scope of the alkene aziridination includes mono-, di-, and trisubstituted olefins as well as the late-stage functionalization of complex substrates. The reaction can be performed on a gram-scale with a catalyst loading of 0.1 mol %. Our DFT study led us to propose a two-spin-state mechanism, involving a triplet Rh-nitrene species as key intermediate to drive the stereocontrolled approach and activation of the substrate.
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Affiliation(s)
- Vincent Boquet
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Ali Nasrallah
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Alejandro L Dana
- CONICET-Universidad de Buenos Aires, UMYMFOR, Buenos Aires C1428EGA, Argentina.,Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Erwan Brunard
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Pablo H Di Chenna
- CONICET-Universidad de Buenos Aires, UMYMFOR, Buenos Aires C1428EGA, Argentina.,Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Fernando J Duran
- CONICET-Universidad de Buenos Aires, UMYMFOR, Buenos Aires C1428EGA, Argentina.,Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, Argentina
| | - Pascal Retailleau
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
| | | | - Marie Sircoglou
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91405 Orsay, France
| | - Philippe Dauban
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198 Gif-sur-Yvette, France
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13
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Burg F, Rovis T. Rh(III)-catalyzed Intra- and Intermolecular 3,4-Difunctionalization of 1,3-Dienes via Rh(III)-π-allyl Amidation with 1,4,2-Dioxazolones. ACS Catal 2022; 12:9690-9697. [PMID: 37829170 PMCID: PMC10569259 DOI: 10.1021/acscatal.2c02537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We herein report a modular strategy, which enables Rh(III)-catalyzed diastereoselective 3,4-amino oxygenation and diamination of 1,3-dienes using different O- and N-nucleophiles in combination with readily available 3-substituted 1,4,2-dioxazolones (78 examples, 37-91% yield). Previous attempts to functionalize the internal double bond rested on the use of plain alcoholic solvents as nucleophilic coupling partners thus dramatically limiting the scope of this transformation. We have now identified hexafluoroisopropanol as a non-nucleophilic solvent which allows the use of diverse nucleophiles and greatly expands the scope, including an unprecedented amino hydroxylation to selectively install valuable, unprotected β-amino alcohols across 1,3-dienes. Moreover, various elaborate alcohols prove to be compatible providing unique access to complex organic molecules. Finally, this method is employed in a series of intramolecular reactions to deliver valuable nitrogen heterocycles as well as γ- and δ-lactones.
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Affiliation(s)
- Finn Burg
- Department of Chemistry, Columbia University, New York 10027, United States
| | - Tomislav Rovis
- Department of Chemistry, Columbia University, New York 10027, United States
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14
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Liu Y, Chen ZH, Li Y, Qian J, Li Q, Wang H. Boryl-Dictated Site-Selective Intermolecular Allylic and Propargylic C-H Amination. J Am Chem Soc 2022; 144:14380-14387. [PMID: 35895901 DOI: 10.1021/jacs.2c06117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
For internal alkenes possessing two or more sets of electronically and sterically similar allylic protons, the site-selectivity for allylic C-H functionalization is fundamentally challenging. Previously, the negative inductive effect from an electronegative atom has been demonstrated to be effective for several inspiring regioselective C-H functionalization reactions. Yet, the use of an electropositive atom for a similar purpose remains to be developed. α-Aminoboronic acids and their derivatives have found widespread applications. Their current syntheses rely heavily on functional group manipulations. Herein we report a boryl-directed intermolecular C-H amination of allyl N-methyliminodiacetyl boronates (B(MIDA)s) and propargylic B(MIDA)s to give α-amino boronates with an exceptionally high level of site-selectivities (up to 300:1). A wide variety of highly functionalized secondary and tertiary α-amino boronates are formed in generally good to excellent yields, thanks to the mildness of the reaction conditions. The unsaturated double and triple bonds within the product leave room for further decorations. Mechanistic studies reveal that the key stabilization effect of the B(MIDA) moiety on its adjacent developing positive charge is responsible for the high site-selectivity and that a closed transition state might be involved, as the reaction is fully stereoretentive. An activation effect of B(MIDA) is also found.
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Affiliation(s)
- Yuan Liu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Zhi-Hao Chen
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Yin Li
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Jiasheng Qian
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Qingjiang Li
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
| | - Honggen Wang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou 510006, China
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15
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Roychowdhury P, Herrera RG, Tan H, Powers DC. Traceless Benzylic C-H Amination via Bifunctional N-Aminopyridinium Intermediates. Angew Chem Int Ed Engl 2022; 61:e202200665. [PMID: 35483017 DOI: 10.1002/anie.202200665] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Indexed: 11/06/2022]
Abstract
C-H amination reactions provide the opportunity to streamline the synthesis of nitrogen-containing organic small molecules. The impact of intermolecular C-H amination methods, however, is currently limited the frequent requirement for the amine precursors to bear activating groups, such as N-sulfonyl substituents, that are both challenging to remove and not useful synthetic handles for subsequent derivatization. Here, we introduce traceless nitrogen activation for C-H amination-which enables application of selective C-H amination chemistry to the preparation of diverse N-functionalized products-via sequential benzylic C-H N-aminopyridylation followed by Ni-catalyzed C-N cross-coupling with aryl boronic acids. Unlike many C-H amination reactions that provide access to protected amines, the current method installs an easily diversifiable synthetic handle that serves as a lynchpin for C-H amination, deaminative N-N functionalization sequences.
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Affiliation(s)
- Pritam Roychowdhury
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - Roberto G Herrera
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - Hao Tan
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
| | - David C Powers
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
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16
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Xiao X, Ruan Z, Li Q, Zhang L, Meng H, Zhang Q, Bao H, Jiang B, Zhou J, Guo C, Wang X, Fu H. A Unique Fe-N 4 Coordination System Enabling Transformation of Oxygen into Superoxide for Photocatalytic CH Activation with High Efficiency and Selectivity. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2200612. [PMID: 35543386 DOI: 10.1002/adma.202200612] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/01/2022] [Indexed: 06/14/2023]
Abstract
Selective oxidation of CH bonds is one of the most important reactions in organic synthesis. However, activation of the α-CH bond of ethylbenzene by use of photocatalysis-generated superoxide anions (O2 •- ) remains a challenge. Herein, the formation of individual Fe atoms on polymeric carbon nitride (CN), that activates O2 to create O2 •- for facilitating the reaction of ethylbenzene to form acetophenone, is demonstrated. By utilizing density functional theory and materials characterization techniques, it is shown that individual Fe atoms are coordinated to four N atoms of CN and the resultant low-spin Fe-N4 system (t2g 6 eg 0 ) is not only a great adsorption site for oxygen molecules, but also allows for fast transfer of electrons generated in the CN framework to adsorbed O2 , producing O2 •- . The oxidation reaction of ethylbenzene triggered by O2 •- ions turns out to have a high conversion rate of 99% as well as an acetophenone selectivity of 99%, which can be ascribed to a novel reaction pathway that is different from the conventional route involving hydroxyl radicals and the production of phenethyl alcohol. Furthermore, it possesses great potential for other CH activation reactions besides ethylbenzene oxidation.
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Affiliation(s)
- Xudong Xiao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, Heilongjiang, 150080, China
| | - Zhoushilin Ruan
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Qi Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, Heilongjiang, 150080, China
| | - Liping Zhang
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Huiyuan Meng
- School of Safety Engineering, Heilongjiang University of Science and Technology, Harbin, Heilongjiang, 150022, China
| | - Qun Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Hongliang Bao
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China
| | - Baojiang Jiang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, Heilongjiang, 150080, China
| | - Jing Zhou
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China
| | - Chuanyu Guo
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, Heilongjiang, 150080, China
| | - Xiaolei Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, Heilongjiang, 150080, China
| | - Honggang Fu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, Heilongjiang, 150080, China
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17
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Roychowdhury P, Herrera RG, Tan H, Powers DC. Traceless Benzylic C−H Amination via Bifunctional
N
‐Aminopyridinium Intermediates. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Roberto G. Herrera
- Department of Chemistry Texas A&M University College Station TX 77843 USA
| | - Hao Tan
- Department of Chemistry Texas A&M University College Station TX 77843 USA
| | - David C. Powers
- Department of Chemistry Texas A&M University College Station TX 77843 USA
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18
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Theoretical studies on Mn-catalyzed intermolecular allylic C-H aminations of internal olefins: mechanism, chemo- and regioselectivity. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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19
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Ali SZ, Budaitis BG, Fontaine DFA, Pace AL, Garwin JA, White MC. Allylic C-H amination cross-coupling furnishes tertiary amines by electrophilic metal catalysis. Science 2022; 376:276-283. [PMID: 35420962 DOI: 10.1126/science.abn8382] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Intermolecular cross-coupling of terminal olefins with secondary amines to form complex tertiary amines-a common motif in pharmaceuticals-remains a major challenge in chemical synthesis. Basic amine nucleophiles in nondirected, electrophilic metal-catalyzed aminations tend to bind to and thereby inhibit metal catalysts. We reasoned that an autoregulatory mechanism coupling the release of amine nucleophiles with catalyst turnover could enable functionalization without inhibiting metal-mediated heterolytic carbon-hydrogen cleavage. Here, we report a palladium(II)-catalyzed allylic carbon-hydrogen amination cross-coupling using this strategy, featuring 48 cyclic and acyclic secondary amines (10 pharmaceutically relevant cores) and 34 terminal olefins (bearing electrophilic functionality) to furnish 81 tertiary allylic amines, including 12 drug compounds and 10 complex drug derivatives, with excellent regio- and stereoselectivity (>20:1 linear:branched, >20:1 E:Z).
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Affiliation(s)
- Siraj Z Ali
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - Brenna G Budaitis
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - Devon F A Fontaine
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - Andria L Pace
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - Jacob A Garwin
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
| | - M Christina White
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL 61801, USA
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20
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Electrogenerated thianthrenium conjugate enables (Z)-selective allylic amination. TRENDS IN CHEMISTRY 2022. [DOI: 10.1016/j.trechm.2022.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Buendia MB, Higginson B, Kegnæs S, Kramer S, Martin R. Redox-Neutral Ni-Catalyzed sp 3 C–H Alkylation of α-Olefins with Unactivated Alkyl Bromides. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01057] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mikkel B. Buendia
- Department of Chemistry, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Bradley Higginson
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Universitat Rovira i Virgili, Department de Quimica, c/Marcel i Domingo, 1, 43007 Tarragona, Spain
| | - Søren Kegnæs
- Department of Chemistry, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Søren Kramer
- Department of Chemistry, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- ICREA, Passeig Lluís Companys, 23, 08010 Barcelona, Spain
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22
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Wang DJ, Targos K, Wickens ZK. Electrochemical Synthesis of Allylic Amines from Terminal Alkenes and Secondary Amines. J Am Chem Soc 2021; 143:21503-21510. [PMID: 34914394 DOI: 10.1021/jacs.1c11763] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Allylic amines are valuable synthetic targets en route to diverse biologically active amine products. Current allylic C-H amination strategies remain limited with respect to the viable N-substituents. Herein, we disclose a new electrochemical process to prepare aliphatic allylic amines by coupling two abundant starting materials: secondary amines and unactivated alkenes. This oxidative transformation proceeds via electrochemical generation of an electrophilic adduct between thianthrene and the alkene substrates. Treatment of these adducts with aliphatic amine nucleophiles and base provides allylic amine products in high yield. This synthetic strategy is also amenable to functionalization of feedstock gaseous alkenes at 1 atm. In the case of 1-butene, high Z-selective crotylation is observed. This strategy, however, is not limited to the synthesis of simple building blocks; complex biologically active molecules are suitable as both alkene and amine coupling partners. Preliminary mechanistic studies implicate vinylthianthrenium salts as key reactive intermediates.
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Affiliation(s)
- Diana J Wang
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Karina Targos
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Zachary K Wickens
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
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23
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Song H, Xiao Y, Zhang Z, Xiong W, Wang R, Guo L, Zhou T. Switching Selectivity in Copper-Catalyzed Transfer Hydrogenation of Nitriles to Primary Amine-Boranes and Secondary Amines under Mild Conditions. J Org Chem 2021; 87:790-800. [PMID: 34958575 DOI: 10.1021/acs.joc.1c02413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple and efficient copper-catalyzed selective transfer hydrogenation of nitriles to primary amine-boranes and secondary amines with an oxazaborolidine-BH3 complex is reported. The selectivity control was achieved under mild conditions by switching the solvent and the copper catalysts. More than 30 primary amine-boranes and 40 secondary amines were synthesized via this strategy in high selectivity and yields of up to 95%. The strategy was applied to the synthesis of 15N labeled in 89% yield.
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Affiliation(s)
- Hao Song
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, PR China.,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, PR China
| | - Yao Xiao
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, PR China
| | - Zhuohua Zhang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, PR China
| | - Wanjin Xiong
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, PR China
| | - Ren Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, PR China.,CNPC Engineering Technology R & D Company Limited, Beijing 102206, PR China
| | - Liangcheng Guo
- Sinopec Jianghan Salt Chemical Hubei Company Limited, Hubei 433121, PR China
| | - Taigang Zhou
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, PR China.,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Xindu Road 8, Chengdu, Sichuan 610500, PR China
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