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Li X, Kong L, Yin S, Zhou H, Lin A, Yao H, Gao S. Palladium-Catalyzed Atroposelective Suzuki-Miyaura Coupling to Construct Axially Chiral Tetra-Substituted α-Boryl Styrenes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309706. [PMID: 38602437 PMCID: PMC11199998 DOI: 10.1002/advs.202309706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/05/2024] [Indexed: 04/12/2024]
Abstract
Palladium-catalyzed Suzuki-Miyaura (SM) coupling is a valuable method for forming C─C bonds, including those between aryl moieties. However, achieving atroposelective synthesis of axially chiral styrenes via SM coupling remains challenging. In this study, a palladium-catalyzed atroposelective Suzuki-Miyaura coupling between gem-diborylalkenes and aryl halides is presented. Using the monophosphine ligand Me-BI-DIME (L2), a range of axially chiral tetra-substituted acyclic styrenes with high yields and excellent enantioselectivities are successfully synthesized. Control experiments reveal that the gem-diboryl group significantly influences the product enantioselectivities and the coupling prefers to occur at sites with lower steric hindrance. Additionally, the alkenyl boronate group in the products proves versatile, allowing for various transformations while maintaining high optical purities.
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Affiliation(s)
- Xiaorui Li
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Lingyu Kong
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Shuxin Yin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Hengrui Zhou
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Shang Gao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
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2
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Su W, Zhu J, Chen Y, Zhang X, Qiu W, Yang K, Yu P, Song Q. Copper-catalysed asymmetric hydroboration of alkenes with 1,2-benzazaborines to access chiral naphthalene isosteres. Nat Chem 2024:10.1038/s41557-024-01505-0. [PMID: 38589627 DOI: 10.1038/s41557-024-01505-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 03/08/2024] [Indexed: 04/10/2024]
Abstract
Bioisosteric replacement has emerged as a clear strategy for drug-structure optimization. Naphthalene is the core element of many chiral pharmaceuticals and drug candidates. However, as a promising isostere of naphthalene, the chiral version of 1,2-benzazaborine has rarely been explored due to the lack of efficient synthetic methods. Here we describe a copper-catalysed enantioselective hydroboration of alkenes with 1,2-benzazaborines. The method provides a general platform for the atom-economic and efficient construction of diverse chiral 1,2-benzazaborine compounds (more than 60 examples) that bear a 2-carbon-stereogenic centre or allene skeleton in high yields and excellent enantioselectivities. Three 1,2-benzazaborine analogues of bioactive chiral naphthalene-containing molecules have been prepared, and a series of transformations around chiral 1,2-benzazaborines have also been developed. Notably, the hydroboration process of this study reveals that the identity of 1,2-benzazaborine plays an essential role in the rate-determining step and catalyst resting state.
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Grants
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 2227104 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 2022J02009, 2022J05016 Natural Science Foundation of Fujian Province (Fujian Provincial Natural Science Foundation)
- KQTD20210811090112004 Shenzhen Science and Technology Innovation Commission
- KQTD20210811090112004 Shenzhen Science and Technology Innovation Commission
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Affiliation(s)
- Wanlan Su
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China
| | - Jide Zhu
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China
| | - Yu Chen
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Xu Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China
| | - Weihua Qiu
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China
| | - Kai Yang
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China.
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China.
| | - Qiuling Song
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China.
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3
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Das KK, Mahato S, Hazra S, Panda S. Development of Methods to the Synthesis of β-Boryl Acyls, Imines and Nitriles. CHEM REC 2022; 22:e202100290. [PMID: 35088513 DOI: 10.1002/tcr.202100290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 12/30/2022]
Abstract
Organoboron compounds are highly important and versatile synthetic intermediates for the preparation of a wide range of organic molecules. Organoboron compounds have drawn significant attention among organic chemists due to their Lewis acidic property, non-toxicity, and commercial availability. Over the last several decades, there has been a substantial development of new organoboron compounds, useful in organic synthesis. Among all other organoboron compounds, β-boryl carbonyl compounds are the important ones. The β-boryl compounds have appeared as promising intermediates for various synthetic transformations. The 1,4-conjugate addition of diboron reagents to carbon-carbon double bond in the presence of different transition-metal catalysts has been extensively reported by various research groups across the globe. This mini-review outlines the numerous racemic as well as asymmetric β-borylation methods developed to date.
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Affiliation(s)
- Kanak Kanti Das
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Somenath Mahato
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Subrata Hazra
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Santanu Panda
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
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4
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Affiliation(s)
- Brian P. Jacobs
- Department of Chemistry, University of Tennessee—Knoxville, Knoxville, Tennessee 37996, United States
| | - Johnathan N. Brantley
- Department of Chemistry, University of Tennessee—Knoxville, Knoxville, Tennessee 37996, United States
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5
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Grayson JD, Dennis FM, Robertson CC, Partridge BM. Chan-Lam Amination of Secondary and Tertiary Benzylic Boronic Esters. J Org Chem 2021; 86:9883-9897. [PMID: 34169720 DOI: 10.1021/acs.joc.1c00976] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We report a Chan-Lam coupling reaction of benzylic and allylic boronic esters with primary and secondary anilines to form valuable alkyl amine products. Both secondary and tertiary boronic esters can be used as coupling partners, with mono-alkylation of the aniline occurring selectively. This is a rare example of a transition-metal-mediated transformation of a tertiary alkylboron reagent. Initial investigation into the reaction mechanism suggests that transmetalation from B to Cu occurs through a single-electron, rather than a two-electron process.
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Affiliation(s)
- James D Grayson
- Department of Chemistry, University of Sheffield, Dainton Building, Sheffield S3 7HF, United Kingdom
| | - Francesca M Dennis
- Department of Chemistry, University of Sheffield, Dainton Building, Sheffield S3 7HF, United Kingdom
| | - Craig C Robertson
- Department of Chemistry, University of Sheffield, Dainton Building, Sheffield S3 7HF, United Kingdom
| | - Benjamin M Partridge
- Department of Chemistry, University of Sheffield, Dainton Building, Sheffield S3 7HF, United Kingdom
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6
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Scholz SO, Kidd JB, Capaldo L, Flikweert NE, Littlefield RM, Yoon TP. Construction of Complex Cyclobutane Building Blocks by Photosensitized [2 + 2] Cycloaddition of Vinyl Boronate Esters. Org Lett 2021; 23:3496-3501. [PMID: 33844561 DOI: 10.1021/acs.orglett.1c00938] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cyclobutyl moieties in drug molecules are rare, and in general, they are minimally substituted and stereochemically simple. Methods to assemble structurally complex cyclobutane building blocks suitable for rapid diversification are thus highly desirable. We report herein a photosensitized [2 + 2] cycloaddition with vinyl boronate esters affording straightforward access to complex, densely functionalized cyclobutane scaffolds. Mechanistic studies suggest an activation mode involving energy transfer to the styrenyl alkene rather than the vinyl boronate ester.
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Affiliation(s)
- Spencer O Scholz
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison Wisconsin 53706, United States
| | - Jesse B Kidd
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison Wisconsin 53706, United States
| | - Luca Capaldo
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison Wisconsin 53706, United States.,Photogreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Niecia E Flikweert
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison Wisconsin 53706, United States
| | - Rowan M Littlefield
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison Wisconsin 53706, United States
| | - Tehshik P Yoon
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison Wisconsin 53706, United States
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7
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Davis CR, Luvaga IK, Ready JM. Enantioselective Allylation of Alkenyl Boronates Promotes a 1,2-Metalate Rearrangement with 1,3-Diastereocontrol. J Am Chem Soc 2021; 143:4921-4927. [PMID: 33755457 DOI: 10.1021/jacs.1c01242] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Alkenyl boronates add to Ir(π-allyl) intermediates with high enantioselectivity. A 1,2-metalate shift forms a second C-C bond and sets a 1,3-stereochemical relationship. The three-component coupling provides tertiary boronic esters that can undergo multiple additional functionalizations. An extension to trisubstituted olefins sets three contiguous stereocenters.
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Affiliation(s)
- Colton R Davis
- Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-8548, United States
| | - Irungu K Luvaga
- Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-8548, United States
| | - Joseph M Ready
- Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-8548, United States
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8
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Bream RN, Clark H, Edney D, Harsanyi A, Hayler J, Ironmonger A, Mc Cleary N, Phillips N, Priestley C, Roberts A, Rushworth P, Szeto P, Webb MR, Wheelhouse K. Application of C–H Functionalization in the Development of a Concise and Convergent Route to the Phosphatidylinositol-3-kinase Delta Inhibitor Nemiralisib. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.0c00486] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Robert N. Bream
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Hugh Clark
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Dean Edney
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Antal Harsanyi
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - John Hayler
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Alan Ironmonger
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Nadine Mc Cleary
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Natalie Phillips
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Catherine Priestley
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Alastair Roberts
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Philip Rushworth
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Peter Szeto
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Michael R. Webb
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Katherine Wheelhouse
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
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9
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Park D, Baek D, Lee CW, Ryu H, Park S, Han W, Hong S. Enantioselective C(sp2)–H borylation of diarylmethylsilanes catalyzed by chiral pyridine-dihydroisoquinoline iridium complexes. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131811] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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10
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Bennett SH, Fawcett A, Denton EH, Biberger T, Fasano V, Winter N, Aggarwal VK. Difunctionalization of C-C σ-Bonds Enabled by the Reaction of Bicyclo[1.1.0]butyl Boronate Complexes with Electrophiles: Reaction Development, Scope, and Stereochemical Origins. J Am Chem Soc 2020; 142:16766-16775. [PMID: 32885974 DOI: 10.1021/jacs.0c07357] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Difunctionalization reactions of C-C σ-bonds have the potential to streamline access to molecules that would otherwise be difficult to prepare. However, the development of such reactions is challenging because C-C σ-bonds are typically unreactive. Exploiting the high ring-strain energy of polycyclic carbocycles is a common strategy to weaken and facilitate the reaction of C-C σ-bonds, but there are limited examples of highly strained C-C σ-bonds being used in difunctionalization reactions. We demonstrate that highly strained bicyclo[1.1.0]butyl boronate complexes (strain energy ca. 65 kcal/mol), which were prepared by reacting boronic esters with bicyclo[1.1.0]butyl lithium, react with electrophiles to achieve the diastereoselective difunctionalization of the strained central C-C σ-bond of the bicyclo[1.1.0]butyl unit. The reaction shows broad substrate scope, with a range of different electrophiles and boronic esters being successfully employed to form a diverse set of 1,1,3-trisubstituted cyclobutanes (>50 examples) with high diastereoselectivity. The high diastereoselectivity observed has been rationalized based on a combination of experimental data and DFT calculations, which suggests that separate concerted and stepwise reaction mechanisms are operating, depending upon the migrating substituent and electrophile used.
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Affiliation(s)
- Steven H Bennett
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Alexander Fawcett
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Elliott H Denton
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Tobias Biberger
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Valerio Fasano
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Nils Winter
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Varinder K Aggarwal
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
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11
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Kelly AM, Chen PJ, Klubnick J, Blair DJ, Burke MD. A Mild Method for Making MIDA Boronates. Org Lett 2020; 22:9408-9414. [DOI: 10.1021/acs.orglett.0c02449] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aidan M. Kelly
- Roger Adams Laboratory, School of Chemical Sciences, University of Illinois at Urbana−Champaign, 600 S, Mathews Avenue, Urbana, Illinois 61801, United States
| | - Peng-Jui Chen
- Roger Adams Laboratory, School of Chemical Sciences, University of Illinois at Urbana−Champaign, 600 S, Mathews Avenue, Urbana, Illinois 61801, United States
| | - Jenna Klubnick
- Roger Adams Laboratory, School of Chemical Sciences, University of Illinois at Urbana−Champaign, 600 S, Mathews Avenue, Urbana, Illinois 61801, United States
| | - Daniel J. Blair
- Roger Adams Laboratory, School of Chemical Sciences, University of Illinois at Urbana−Champaign, 600 S, Mathews Avenue, Urbana, Illinois 61801, United States
| | - Martin D. Burke
- Roger Adams Laboratory, School of Chemical Sciences, University of Illinois at Urbana−Champaign, 600 S, Mathews Avenue, Urbana, Illinois 61801, United States
- Carle Illinois College of Medicine, 807 South Wright Street, Urbana, Illinois 61820, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana−Champaign, 1206 West Gregory Dr., Urbana, Illinois 61801, United States
- Arnold and Mabel Beckman Institute, University of Illinois at Urbana−Champaign, 405 North Mathews Ave., Urbana, Illinois 61801, United States
- Department of Biochemistry, University of Illinois at Urbana−Champaign, 600 S Mathews Avenue, Urbana, Illinois 61801, United States
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12
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Wittmann BJ, Knight AM, Hofstra JL, Reisman SE, Jennifer Kan SB, Arnold FH. Diversity-Oriented Enzymatic Synthesis of Cyclopropane Building Blocks. ACS Catal 2020; 10:7112-7116. [PMID: 33282460 DOI: 10.1021/acscatal.0c01888] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
While biocatalysis is increasingly incorporated into drug development pipelines, it is less commonly used in the early stages of drug discovery. By engineering a protein to produce a chiral motif with a derivatizable functional handle, biocatalysts can be used to help generate diverse building blocks for drug discovery. Here we show the engineering of two variants of Rhodothermus marinus nitric oxide dioxygenase (RmaNOD) to catalyze the formation of cis- and tran- diastereomers of a pinacolboronate-substituted cyclopropane which can be readily derivatized to generate diverse stereopure cyclopropane building blocks.
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13
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Freitas JJR, Freitas QPSB, Andrade SRCP, Freitas JCR, Oliveira RA, Menezes PH. Efficient method for propargylation of aldehydes promoted by allenylboron compounds under microwave irradiation. Beilstein J Org Chem 2020; 16:168-174. [PMID: 32117473 PMCID: PMC7034246 DOI: 10.3762/bjoc.16.19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/30/2020] [Indexed: 12/23/2022] Open
Abstract
The propargylation of aldehydes promoted by microwave irradiation using allenylboron compounds in a chemo- and regioselective way is described. The corresponding products were obtained in short reaction time, high yield and purity without the need of any solvent when allenylboronic acid pinacol ester was used, or using a minimal amount of acetone when potassium allenyltrifluoroborate was used.
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Affiliation(s)
| | - Queila P S B Freitas
- Departamento de Química Fundamental, Universidade Federal de Pernambuco, UFPE, Recife, Pernambuco 50740-560, Brazil
| | - Silvia R C P Andrade
- Departamento de Química Fundamental, Universidade Federal de Pernambuco, UFPE, Recife, Pernambuco 50740-560, Brazil
| | - Juliano C R Freitas
- Universidade Federal de Campina Grande, Centro de Educação e Saúde: Cuité, Paraíba, Brazil
| | - Roberta A Oliveira
- Departamento de Química Fundamental, Universidade Federal de Pernambuco, UFPE, Recife, Pernambuco 50740-560, Brazil
| | - Paulo H Menezes
- Departamento de Química Fundamental, Universidade Federal de Pernambuco, UFPE, Recife, Pernambuco 50740-560, Brazil
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14
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Nandakumar M, Rubial B, Noble A, Myers EL, Aggarwal VK. Ring-Opening Lithiation-Borylation of 2-Trifluoromethyl Oxirane: A Route to Versatile Tertiary Trifluoromethyl Boronic Esters. Angew Chem Int Ed Engl 2020; 59:1187-1191. [PMID: 31710748 DOI: 10.1002/anie.201912797] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Indexed: 11/07/2022]
Abstract
Stereogenic trifluoromethyl-substituted carbon centers are highly sought-after moieties in pharmaceutical and agrochemical discovery. Here, we show that lithiation-borylation reactions of 2-trifluoromethyl oxirane give densely functionalized and highly versatile trifluoromethyl-substituted α-tertiary boronic esters. The intermediate boronate complexes undergo the desired 1,2-rearrangement of the carbon-based group with complete retentive stereospecificity, a process that was only observed in non-polar solvents in the presence of TESOTf. Although the trifluoromethyl group adversely affects subsequent transformations of the α-boryl group, Zweifel olefinations provide trifluoromethyl-bearing quaternary stereocenters substituted with alkenes, alkynes and ketones.
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Affiliation(s)
| | - Belén Rubial
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Adam Noble
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Eddie L Myers
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Varinder K Aggarwal
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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15
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Nandakumar M, Rubial B, Noble A, Myers EL, Aggarwal VK. Ring‐Opening Lithiation–Borylation of 2‐Trifluoromethyl Oxirane: A Route to Versatile Tertiary Trifluoromethyl Boronic Esters. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912797] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Belén Rubial
- School of Chemistry University of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Adam Noble
- School of Chemistry University of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Eddie L. Myers
- School of Chemistry University of Bristol, Cantock's Close Bristol BS8 1TS UK
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16
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Lou Y, Wang J, Gong G, Guan F, Lu J, Wen J, Zhang X. Catalytic asymmetric hydrogenation of ( Z)-α-dehydroamido boronate esters: direct route to alkyl-substituted α-amidoboronic esters. Chem Sci 2019; 11:851-855. [PMID: 34123062 PMCID: PMC8146211 DOI: 10.1039/c9sc04534a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 11/21/2019] [Indexed: 12/16/2022] Open
Abstract
The direct catalytic asymmetric hydrogenation of (Z)-α-dehydroamino boronate esters was realized. Using this approach, a class of therapeutically relevant alkyl-substituted α-amidoboronic esters was easily synthesized in high yields with generally excellent enantioselectivities (up to 99% yield and 99% ee). The utility of the products has been demonstrated by transformation to their corresponding boronic acid derivatives by a Pd-catalyzed borylation reaction and an efficient synthesis of a potential intermediate of bortezomib. The clean, atom-economic and environment friendly nature of this catalytic asymmetric hydrogenation process would make this approach a new alternative for the production of alkyl-substituted α-amidoboronic esters of great potential in the area of organic synthesis and medicinal chemistry.
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Affiliation(s)
- Yazhou Lou
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Jun Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Gelin Gong
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Fanfu Guan
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Jiaxiang Lu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
| | - Jialin Wen
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology Shenzhen 518000 People's Republic of China
| | - Xumu Zhang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 People's Republic of China
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17
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Kondo M, Kanazawa J, Ichikawa T, Shimokawa T, Nagashima Y, Miyamoto K, Uchiyama M. Silaboration of [1.1.1]Propellane: A Storable Feedstock for Bicyclo[1.1.1]pentane Derivatives. Angew Chem Int Ed Engl 2019; 59:1970-1974. [PMID: 31603274 DOI: 10.1002/anie.201909655] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/18/2019] [Indexed: 01/24/2023]
Abstract
The silaboration of [1.1.1]propellane enables direct introduction of B and Si functional groups onto the bicyclo[1.1.1]pentane (BCP) scaffold in high yield under mild, additive-free conditions. The silaborated BCP can be obtained on a gram-scale in a single step without the need for column-chromatographic purification, and is storable and easy to handle, providing a versatile synthetic intermediate for BCP derivatives. We also describe various conversions of the C-B/C-Si bonds on the BCP scaffold, including development of a modified Suzuki-Miyaura cross-coupling reaction at the highly sterically hindered bridgehead sp3 carbon center of the BCP skeleton using a combination of highly activated BCP boronic esters, copper(I) oxide, and a PdCl2 (dppf) catalyst system.
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Affiliation(s)
- Masaki Kondo
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Junichiro Kanazawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Cluster for Pioneering Research (CPR), Advanced Elements Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Tomohiro Ichikawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takumi Shimokawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yuki Nagashima
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kazunori Miyamoto
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Cluster for Pioneering Research (CPR), Advanced Elements Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.,Cluster for Pioneering Research (CPR), Advanced Elements Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.,Research Initiative for Supra-Materials (RISM), Shinshu University, 3-15-1 Tokida, Ueda, Nagano, 386-8567, Japan
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18
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Kondo M, Kanazawa J, Ichikawa T, Shimokawa T, Nagashima Y, Miyamoto K, Uchiyama M. Silaboration of [1.1.1]Propellane: A Storable Feedstock for Bicyclo[1.1.1]pentane Derivatives. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909655] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Masaki Kondo
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Junichiro Kanazawa
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Cluster for Pioneering Research (CPR)Advanced Elements Chemistry LaboratoryRIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Tomohiro Ichikawa
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Takumi Shimokawa
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Yuki Nagashima
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Kazunori Miyamoto
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Cluster for Pioneering Research (CPR)Advanced Elements Chemistry LaboratoryRIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical SciencesThe University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Cluster for Pioneering Research (CPR)Advanced Elements Chemistry LaboratoryRIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Research Initiative for Supra-Materials (RISM)Shinshu University 3-15-1 Tokida, Ueda Nagano 386-8567 Japan
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19
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Léonard NG, Palmer WN, Friedfeld MR, Bezdek MJ, Chirik PJ. Remote, Diastereoselective Cobalt-Catalyzed Alkene Isomerization–Hydroboration: Access to Stereodefined 1,3-Difunctionalized Indanes. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03444] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Nadia G. Léonard
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - W. Neil Palmer
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Max R. Friedfeld
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Máté J. Bezdek
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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20
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Bochat AJ, Shoba VM, Takacs JM. Ligand-Controlled Regiodivergent Enantioselective Rhodium-Catalyzed Alkene Hydroboration. Angew Chem Int Ed Engl 2019; 58:9434-9438. [PMID: 31067341 DOI: 10.1002/anie.201903308] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Indexed: 12/31/2022]
Abstract
Regiocontrol in the rhodium-catalyzed boration of vinyl arenes is typically dominated by the presence of the conjugated aryl substituent. However, small differences in TADDOL-derived chiral monophosphite ligands can override this effect and direct rhodium-catalyzed hydroboration of β-aryl and β-heteroaryl methylidenes by pinacolborane to selectively produce either chiral primary or tertiary borated products. The regiodivergent behavior is coupled with enantiodivergent addition of the borane. The nature of the TADDOL backbone substituents and that of the phosphite moiety function synergistically to direct the sense and extent of regioselectivity and enantioinduction. Twenty substrates are shown to undergo each reaction mode with regioselectivity values reaching greater than 20:1 and enantiomer ratios reaching up to 98:2. A variety of subsequent transformations illustrate the potential utility of each product.
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Affiliation(s)
- Andrew J Bochat
- Department of Chemistry and Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - Veronika M Shoba
- Department of Chemistry and Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - James M Takacs
- Department of Chemistry and Nebraska Center for Integrated Biomolecular Communication, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
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21
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Silvi M, Aggarwal VK. Radical Addition to Strained σ-Bonds Enables the Stereocontrolled Synthesis of Cyclobutyl Boronic Esters. J Am Chem Soc 2019; 141:9511-9515. [PMID: 31142107 DOI: 10.1021/jacs.9b03653] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
While radical additions to π-bonds are well established, additions to σ-bonds are far less explored. We have found that electron deficient radicals derived from alkyl iodides under visible light irradiation add to the central strained bond of bicyclobutyl (BCB)-boronate complexes and lead to 1,3-alkyl disubstituted cyclobutyl boronic esters in high yields, with full stereospecificity and high levels of stereoselectivity. Novel cyclobutyl-substituted structures, including peptide and steroid boronic ester derivatives can be accessed. Additionally, although the use of electron-rich alkyl iodides as radical precursors was found to be ineffective, an alternative route involving alkylsulfonylation of the BCB-boronate followed by reductive desulfonylation provided access to simple alkyl substituted cyclobutane products.
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Affiliation(s)
- Mattia Silvi
- School of Chemistry , University of Bristol , Cantock's Close, Bristol BS8 1TS , United Kingdom
| | - Varinder K Aggarwal
- School of Chemistry , University of Bristol , Cantock's Close, Bristol BS8 1TS , United Kingdom
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22
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Bochat AJ, Shoba VM, Takacs JM. Ligand‐Controlled Regiodivergent Enantioselective Rhodium‐Catalyzed Alkene Hydroboration. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903308] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Andrew J. Bochat
- Department of Chemistry and Nebraska Center for Integrated Biomolecular CommunicationUniversity of Nebraska-Lincoln 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - Veronika M. Shoba
- Department of Chemistry and Nebraska Center for Integrated Biomolecular CommunicationUniversity of Nebraska-Lincoln 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - James M. Takacs
- Department of Chemistry and Nebraska Center for Integrated Biomolecular CommunicationUniversity of Nebraska-Lincoln 807 Hamilton Hall Lincoln NE 68588-0304 USA
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23
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Han Z, Liu G, Zhang X, Li A, Dong XQ, Zhang X. Synthesis of Chiral β-Borylated Carboxylic Esters via Nickel-Catalyzed Asymmetric Hydrogenation. Org Lett 2019; 21:3923-3926. [DOI: 10.1021/acs.orglett.9b00994] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhengyu Han
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Gang Liu
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xianghe Zhang
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Anqi Li
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xiu-Qin Dong
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Xumu Zhang
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, P. R. China
- Department of Chemistry, Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China
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24
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Liu G, Li A, Qin X, Han Z, Dong X, Zhang X. Efficient Access to Chiral β‐Borylated Carboxylic Esters via Rh‐Catalyzed Hydrogenation. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900161] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Gang Liu
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan, Hubei 430072 People's Republic of China
| | - Anqi Li
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan, Hubei 430072 People's Republic of China
| | - Xueyuan Qin
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan, Hubei 430072 People's Republic of China
| | - Zhengyu Han
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan, Hubei 430072 People's Republic of China
| | - Xiu‐Qin Dong
- Key Laboratory of Biomedical Polymers, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular SciencesWuhan University Wuhan, Hubei 430072 People's Republic of China
| | - Xumu Zhang
- Department of Chemistry and Shenzhen Grubbs InstituteSouthern University of Science and Technology Shenzhen, Guangdong 518055 People's Republic of China
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25
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Fawcett A, Murtaza A, Gregson CHU, Aggarwal VK. Strain-Release-Driven Homologation of Boronic Esters: Application to the Modular Synthesis of Azetidines. J Am Chem Soc 2019; 141:4573-4578. [DOI: 10.1021/jacs.9b01513] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Alexander Fawcett
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Amna Murtaza
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Charlotte H. U. Gregson
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Varinder K. Aggarwal
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
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26
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Carbopalladation of C–C σ-bonds enabled by strained boronate complexes. Nat Chem 2018; 11:117-122. [DOI: 10.1038/s41557-018-0181-x] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 10/29/2018] [Indexed: 12/12/2022]
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27
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Zhao S, Gensch T, Murray B, Niemeyer ZL, Sigman MS, Biscoe MR. Enantiodivergent Pd-catalyzed C-C bond formation enabled through ligand parameterization. Science 2018; 362:670-674. [PMID: 30237245 PMCID: PMC6613548 DOI: 10.1126/science.aat2299] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 09/06/2018] [Indexed: 01/01/2023]
Abstract
Despite the enormous potential for the use of stereospecific cross-coupling reactions to rationally manipulate the three-dimensional structure of organic molecules, the factors that control the transfer of stereochemistry in these reactions remain poorly understood. Here we report a mechanistic and synthetic investigation into the use of enantioenriched alkylboron nucleophiles in stereospecific Pd-catalyzed Suzuki cross-coupling reactions. By developing a suite of molecular descriptors of phosphine ligands, we could apply predictive statistical models to select or design distinct ligands that respectively promoted stereoinvertive and stereoretentive cross-coupling reactions. Stereodefined branched structures were thereby accessed through the predictable manipulation of absolute stereochemistry, and a general model for the mechanism of alkylboron transmetallation was proposed.
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Affiliation(s)
- Shibin Zhao
- Department of Chemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
| | - Tobias Gensch
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, USA
| | - Benjamin Murray
- Department of Chemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
| | - Zachary L Niemeyer
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, USA
| | - Matthew S Sigman
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, USA.
| | - Mark R Biscoe
- Department of Chemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA.
- Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
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28
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Chakrabarty S, Takacs JM. Phosphonate-Directed Catalytic Asymmetric Hydroboration: Delivery of Boron to the More Substituted Carbon, Leading to Chiral Tertiary Benzylic Boronic Esters. ACS Catal 2018; 8:10530-10536. [PMID: 31134137 DOI: 10.1021/acscatal.8b03591] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Phosphonate-directed catalytic asymmetric hydroboration (CAHB) of β-aryl/heteroaryl methylidenes and trisubstituted alkenes by pinacolborane enables facile access to functionalized, chiral tertiary benzylic boronic esters. Hydroboration is catalyzed by a chiral rhodium catalyst prepared in situ from a Rh(I)-precursor in combination with a simple TADDOL-derived chiral cyclic monophosphite in a 1:1 ratio. The regio- and stereochemistry arises from the combined effects of the relative disposition of the directing group to the alkene, the alkene substitution pattern, and the necessity of an aryl substituent attached to the alkene. A range of aryl and heteroaryl substituents can be accommodated, and for several chiral substrates, the reactions are efficiently catalyst-controlled enabling the choice of diastereomeric products as desired. Stereospecific transformations of the chiral boronic ester afford chiral phosphonates bearing a quaternary carbon stereocenter. The synthetic utility of the products is further demonstrated by α-oxidation of the phosphonate leading to hydroxy- and oxo-phosphonates; the latter readily undergo elimination/substitution reactions to unmask the phosphonate functionality with the formation of aldehydes, alcohols, esters, amides, acids and ketones.
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Affiliation(s)
- Suman Chakrabarty
- Department of Chemistry and Center for Integrated Biomolecular Communication, University of Nebraska—Lincoln, Lincoln, Nebraska 68588−0304, United States
| | - James M. Takacs
- Department of Chemistry and Center for Integrated Biomolecular Communication, University of Nebraska—Lincoln, Lincoln, Nebraska 68588−0304, United States
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29
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Jia T, He Q, Ruscoe RE, Pulis AP, Procter DJ. Regiodivergent Copper Catalyzed Borocyanation of 1,3-Dienes. Angew Chem Int Ed Engl 2018; 57:11305-11309. [DOI: 10.1002/anie.201806169] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Tao Jia
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
- College of Chemistry and Materials Science; Sichuan Normal University; Chengdu 610068 P. R. China
| | - Qiong He
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Rebecca E. Ruscoe
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Alexander P. Pulis
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - David J. Procter
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
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30
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Jia T, He Q, Ruscoe RE, Pulis AP, Procter DJ. Regiodivergent Copper Catalyzed Borocyanation of 1,3-Dienes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806169] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Tao Jia
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
- College of Chemistry and Materials Science; Sichuan Normal University; Chengdu 610068 P. R. China
| | - Qiong He
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Rebecca E. Ruscoe
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Alexander P. Pulis
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - David J. Procter
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
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31
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Jayasundara CRK, Sabasovs D, Staples RJ, Oppenheimer J, Smith MR, Maleczka RE. Cobalt-Catalyzed C–H Borylation of Alkyl Arenes and Heteroarenes Including the First Selective Borylations of Secondary Benzylic C–H Bonds. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00144] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chathurika R. K. Jayasundara
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824, United States
| | - Dmitrijs Sabasovs
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824, United States
| | - Richard J. Staples
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824, United States
| | - Jossian Oppenheimer
- The Dow Chemical Company, Process Chemistry & Development, Core R&D, Midland, Michigan 48674, United States
| | - Milton R. Smith
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824, United States
| | - Robert E. Maleczka
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, Michigan 48824, United States
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32
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Edney D, Hulcoop DG, Leahy JH, Vernon LE, Wipperman MD, Bream RN, Webb MR. Development of Flexible and Scalable Routes to Two Phosphatidinylinositol-3-kinase Delta Inhibitors via a Common Intermediate Approach. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dean Edney
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - David G. Hulcoop
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - John H. Leahy
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Lois E. Vernon
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Mark D. Wipperman
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Robert N. Bream
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Michael R. Webb
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
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33
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Zhang Y, Banwell MG. A Total Synthesis of the Marine Alkaloid Discoipyrrole D. J Org Chem 2017; 82:9328-9334. [DOI: 10.1021/acs.joc.7b01192] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yiwen Zhang
- Research School of Chemistry,
Institute of Advanced Studies, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Martin G. Banwell
- Research School of Chemistry,
Institute of Advanced Studies, The Australian National University, Canberra, Australian Capital Territory 2601, Australia
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34
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Fawcett A, Pradeilles J, Wang Y, Mutsuga T, Myers EL, Aggarwal VK. Photoinduced decarboxylative borylation of carboxylic acids. Science 2017; 357:283-286. [DOI: 10.1126/science.aan3679] [Citation(s) in RCA: 379] [Impact Index Per Article: 54.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 06/07/2017] [Indexed: 12/30/2022]
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35
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Horn PA, Braun RK, Isoppo VG, Costa JSD, Lüdtke DS, Moro AV. Combining Copper-Catalyzed Hydroboration with Palladium-Catalyzed Suzuki Coupling for the One-pot Synthesis of Arylallylamines under Micellar Conditions. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700094] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Pedro A. Horn
- Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves 9500 91501-970 Porto Alegre, RS Brazil
| | - Roger K. Braun
- Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves 9500 91501-970 Porto Alegre, RS Brazil
| | - Victória G. Isoppo
- Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves 9500 91501-970 Porto Alegre, RS Brazil
| | - Jessie S. da Costa
- Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves 9500 91501-970 Porto Alegre, RS Brazil
| | - Diogo S. Lüdtke
- Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves 9500 91501-970 Porto Alegre, RS Brazil
| | - Angélica V. Moro
- Institute of Chemistry; Universidade Federal do Rio Grande do Sul; Av. Bento Gonçalves 9500 91501-970 Porto Alegre, RS Brazil
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Sandford C, Aggarwal VK. Stereospecific functionalizations and transformations of secondary and tertiary boronic esters. Chem Commun (Camb) 2017; 53:5481-5494. [DOI: 10.1039/c7cc01254c] [Citation(s) in RCA: 342] [Impact Index Per Article: 48.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This feature article discusses the range of stereospecific transformations available to enantioenriched boronic esters, and their applications in synthesis.
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Chambers RK, Chaipukdee N, Thaima T, Kanokmedhakul K, Pyne SG. Synthesis of α-Propargylglycinates Using the Borono-Mannich Reaction with Pinacol Allenylboronate and Potassium Allenyltrifluoroborate. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600436] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rachel K. Chambers
- School of Chemistry; University of Wollongong; 2522 Wollongong New South Wales Australia
| | - Nattapong Chaipukdee
- School of Chemistry; University of Wollongong; 2522 Wollongong New South Wales Australia
- Natural Products Research Unit; Department of Chemistry; and Center of Excellence for Innovation in Chemistry; Khon Kaen University; 40002 Khon Kaen Thailand
| | - Thanaphat Thaima
- School of Chemistry; University of Wollongong; 2522 Wollongong New South Wales Australia
| | - Kwanjai Kanokmedhakul
- Natural Products Research Unit; Department of Chemistry; and Center of Excellence for Innovation in Chemistry; Khon Kaen University; 40002 Khon Kaen Thailand
| | - Stephen G. Pyne
- School of Chemistry; University of Wollongong; 2522 Wollongong New South Wales Australia
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Schmitt E, Panossian A, Vors JP, Funke C, Lui N, Pazenok S, Leroux FR. A Major Advance in the Synthesis of Fluoroalkyl Pyrazoles: Tuneable Regioselectivity and Broad Substitution Patterns. Chemistry 2016; 22:11239-44. [PMID: 27362713 DOI: 10.1002/chem.201601621] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Indexed: 01/08/2023]
Abstract
A novel approach towards highly functionalized fluoroalkyl pyrazoles was developed by using fluoroalkyl amino reagents in combination with a variety of fluorinated ketimines. Tuneable introduction of fluoroalkyl groups in the 3- and 5-positions was possible by using vinamidinium intermediates or the corresponding enamino ketones after hydrolysis. These high-value building blocks can give rise to a large number of analogues for bioactivity screening and discovering new heterocyclic bioactive ingredients in various life science fields.
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Affiliation(s)
- Etienne Schmitt
- CNRS & University of Strasbourg (ECPM), UMR CNRS 7509, LCR Bayer-CNRS C2OF, 25 Rue Becquerel, 67087, Strasbourg, France
| | - Armen Panossian
- CNRS & University of Strasbourg (ECPM), UMR CNRS 7509, LCR Bayer-CNRS C2OF, 25 Rue Becquerel, 67087, Strasbourg, France
| | - Jean-Pierre Vors
- Bayer S.A.S., 14 Impasse Pierre Baizet, BP99163, 69263, Lyon Cedex 09, France
| | - Christian Funke
- Bayer Crop Science, Alfred-Nobel-Strasse 50, 40789, Monheim, Germany
| | - Norbert Lui
- Bayer Crop Science, Alfred-Nobel-Strasse 50, 40789, Monheim, Germany
| | - Sergiy Pazenok
- Bayer Crop Science, Alfred-Nobel-Strasse 50, 40789, Monheim, Germany.
| | - Frédéric R Leroux
- CNRS & University of Strasbourg (ECPM), UMR CNRS 7509, LCR Bayer-CNRS C2OF, 25 Rue Becquerel, 67087, Strasbourg, France.
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Merritt JM, Andiappan M, Pietz MA, Richey RN, Sullivan KA, Kjell DP. Mitigating the Risk of Coprecipitation of Pinacol during Isolation from Telescoped Miyaura Borylation and Suzuki Couplings Utilizing Boron Pinacol Esters: Use of Modeling for Process Design. Org Process Res Dev 2016. [DOI: 10.1021/acs.oprd.5b00324] [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)
- Jeremy M. Merritt
- Small Molecule Design and
Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46221, United States
| | - Marimuthu Andiappan
- Small Molecule Design and
Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46221, United States
| | - Mark A. Pietz
- Small Molecule Design and
Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46221, United States
| | - Rachel N. Richey
- Small Molecule Design and
Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46221, United States
| | - Kevin A. Sullivan
- Small Molecule Design and
Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46221, United States
| | - Douglas P. Kjell
- Small Molecule Design and
Development, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46221, United States
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Basch CH, Cobb KM, Watson MP. Nickel-Catalyzed Borylation of Benzylic Ammonium Salts: Stereospecific Synthesis of Enantioenriched Benzylic Boronates. Org Lett 2016; 18:136-9. [PMID: 26679212 PMCID: PMC4809423 DOI: 10.1021/acs.orglett.5b03455] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have developed a stereospecific, nickel-catalyzed cross-coupling of secondary benzylic ammonium salts and diboronate esters to deliver highly enantioenriched benzylic boronates. This reaction utilizes amine-derived electrophiles, which are readily available in high enantiopurity, and simple, inexpensive nickel catalysts. This reaction has broad scope, enabling synthesis of a variety of secondary benzylic boronates in good yields and excellent ee's.
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Affiliation(s)
- Corey H. Basch
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Kelsey M. Cobb
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Mary P. Watson
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
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Churches QI, Hutton CA. Introduction, Interconversion and Removal of Boron Protecting Groups. BORON REAGENTS IN SYNTHESIS 2016. [DOI: 10.1021/bk-2016-1236.ch011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- Quentin I. Churches
- School of Chemistry, Bio21 Institute Building, The University of Melbourne, 30 Flemington Rd, Parkville, Victoria 3010, Australia
| | - Craig A. Hutton
- School of Chemistry, Bio21 Institute Building, The University of Melbourne, 30 Flemington Rd, Parkville, Victoria 3010, Australia
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Légaré MA, Rochette É, Légaré Lavergne J, Bouchard N, Fontaine FG. Bench-stable frustrated Lewis pair chemistry: fluoroborate salts as precatalysts for the C–H borylation of heteroarenes. Chem Commun (Camb) 2016; 52:5387-90. [DOI: 10.1039/c6cc01267a] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Air and moisture-stable fluoroborate derivatives of (tetramethylpiperidino)benzene are stable and convenient precatalysts for the dehydrogenative borylation of heteroarenes.
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Affiliation(s)
- Marc-André Légaré
- Département de Chimie
- Centre de Catalyse et de Chimie Verte (C3V)
- Université Laval
- Quebec City (Qc)
- Canada
| | - Étienne Rochette
- Département de Chimie
- Centre de Catalyse et de Chimie Verte (C3V)
- Université Laval
- Quebec City (Qc)
- Canada
| | - Julien Légaré Lavergne
- Département de Chimie
- Centre de Catalyse et de Chimie Verte (C3V)
- Université Laval
- Quebec City (Qc)
- Canada
| | - Nicolas Bouchard
- Département de Chimie
- Centre de Catalyse et de Chimie Verte (C3V)
- Université Laval
- Quebec City (Qc)
- Canada
| | - Frédéric-Georges Fontaine
- Département de Chimie
- Centre de Catalyse et de Chimie Verte (C3V)
- Université Laval
- Quebec City (Qc)
- Canada
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Wang CY, Derosa J, Biscoe MR. Configurationally Stable, Enantioenriched Organometallic Nucleophiles in Stereospecific Pd-Catalyzed Cross-Coupling Reactions: An Alternative Approach to Asymmetric Synthesis. Chem Sci 2015; 6:5105-5113. [PMID: 26388985 PMCID: PMC4571484 DOI: 10.1039/c5sc01710f] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Accepted: 06/30/2015] [Indexed: 01/28/2023] Open
Abstract
Several research groups have recently developed methods to employ configurationally stable, enantioenriched organometallic nucleophiles in stereospecific Pd-catalyzed cross-coupling reactions. By establishing the absolute configuration of a chiral alkyltin or alkylboron nucleophile prior to its use in cross-coupling reactions, new stereogenic centers may be rapidly and reliably generated with preservation of the known initial stereochemistry. While this area of research is still in its infancy, such stereospecific cross-coupling reactions may emerge as simple, general methods to access diverse, optically active products from common enantioenriched organometallic building blocks. This minireview highlights recent progress towards the development of general, stereospecific Pd-catalyzed cross-coupling reactions using configurationally stable organometallic nucleophiles.
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Affiliation(s)
- Chao-Yuan Wang
- Department of Chemistry , The City College of New York (CCNY) , 160 Convent Avenue , New York NY 10031 , USA .
- The Graduate Center of the City University of New York (CUNY) , 365 Fifth Avenue , New York NY 10016 , USA
| | - Joseph Derosa
- Department of Chemistry , The City College of New York (CCNY) , 160 Convent Avenue , New York NY 10031 , USA .
| | - Mark R. Biscoe
- Department of Chemistry , The City College of New York (CCNY) , 160 Convent Avenue , New York NY 10031 , USA .
- The Graduate Center of the City University of New York (CUNY) , 365 Fifth Avenue , New York NY 10016 , USA
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Lou Y, Cao P, Jia T, Zhang Y, Wang M, Liao J. Copper-Catalyzed Enantioselective 1,6-Boration ofpara-Quinone Methides and Efficient Transformation ofgem-Diarylmethine Boronates to Triarylmethanes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505926] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Lou Y, Cao P, Jia T, Zhang Y, Wang M, Liao J. Copper-Catalyzed Enantioselective 1,6-Boration ofpara-Quinone Methides and Efficient Transformation ofgem-Diarylmethine Boronates to Triarylmethanes. Angew Chem Int Ed Engl 2015; 54:12134-8. [DOI: 10.1002/anie.201505926] [Citation(s) in RCA: 229] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 07/27/2015] [Indexed: 12/14/2022]
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Brady PB, Carreira EM. Addition of Trifluoroborates to Oxetanyl N,O-Acetals: Entry into Spiro and Fused Saturated Heterocycles. Org Lett 2015; 17:3350-3. [DOI: 10.1021/acs.orglett.5b01607] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patrick B. Brady
- Department of Chemistry and
Applied Biosciences, Laboratorium für Organische Chemie, Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, CH-8093 Zürich, Switzerland
| | - Erick M. Carreira
- Department of Chemistry and
Applied Biosciences, Laboratorium für Organische Chemie, Eidgenössische Technische Hochschule Zürich, Vladimir-Prelog-Weg 3, CH-8093 Zürich, Switzerland
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Annadi K, Wee AGH. Stereoselective Syntheses of (+)-2-epi-Deoxoprosopinine, (−)-Deoxoprosophylline, (+)-cis-195A, and 2,5-Di-epi-cis-195A from a Common Chiral Nonracemic Building Block. J Org Chem 2015; 80:5236-51. [DOI: 10.1021/acs.joc.5b00621] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Krishna Annadi
- Department of Chemistry and
Biochemistry, University of Regina, Regina, Saskatchewan S4S 0A2, Canada
| | - Andrew G. H. Wee
- Department of Chemistry and
Biochemistry, University of Regina, Regina, Saskatchewan S4S 0A2, Canada
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Fandrick KR, Mulder JA, Patel ND, Gao J, Konrad M, Archer E, Buono FG, Duran A, Schmid R, Daeubler J, Desrosiers JN, Zeng X, Rodriguez S, Ma S, Qu B, Li Z, Fandrick DR, Grinberg N, Lee H, Bosanac T, Takahashi H, Chen Z, Bartolozzi A, Nemoto P, Busacca CA, Song JJ, Yee NK, Mahaney PE, Senanayake CH. Development of an Asymmetric Synthesis of a Chiral Quaternary FLAP Inhibitor. J Org Chem 2015; 80:1651-60. [DOI: 10.1021/jo502550h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Keith R. Fandrick
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jason A. Mulder
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nitinchandra D. Patel
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Joe Gao
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Michael Konrad
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Elizabeth Archer
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Frederic G. Buono
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Adil Duran
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Rolf Schmid
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Juergen Daeubler
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jean-Nicolas Desrosiers
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Xingzhong Zeng
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Sonia Rodriguez
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Shengli Ma
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Bo Qu
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhibin Li
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Daniel R. Fandrick
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nelu Grinberg
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Heewon Lee
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Todd Bosanac
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Hidenori Takahashi
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhidong Chen
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Alessandra Bartolozzi
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Peter Nemoto
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Carl A. Busacca
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jinhua J. Song
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nathan K. Yee
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Paige E. Mahaney
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Chris H. Senanayake
- Department
of Chemical Development, Boehringer-Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
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