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Fairchild ME, Noble A, Aggarwal VK. Diastereodivergent Synthesis of Cyclopentyl Boronic Esters Bearing Contiguous Fully Substituted Stereocenters. Angew Chem Int Ed Engl 2022; 61:e202205816. [PMID: 35639345 PMCID: PMC9542923 DOI: 10.1002/anie.202205816] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Indexed: 01/02/2023]
Abstract
The synthesis of molecules bearing two or more contiguous, quaternary stereocenters is challenging, owing to the difficulty in controlling stereochemistry whilst simultaneously constructing a sterically congested motif. Herein, we report the electrophile-induced ring contractive 1,2-metallate rearrangement of 6-membered cyclic alkenyl boronate complexes for the synthesis of cyclopentyl boronic esters bearing two contiguous, fully substituted stereocenters with high levels of stereocontrol. Remarkably, simple variation of the reaction solvent enabled their diastereodivergent construction with facile access to complementary diastereomeric pairs. The utility of our methodology is demonstrated in the asymmetric total synthesis of (+)-herbertene-1,14-diol.
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Affiliation(s)
| | - Adam Noble
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
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2
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Fairchild ME, Noble A, Aggarwal VK. Diastereodivergent Synthesis of Cyclopentyl Boronic Esters Bearing Contiguous Fully Substituted Stereocenters. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205816] [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)
- Molly E. Fairchild
- 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
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3
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Tao L, Yang W, Zhao W. Synthesis of Carboxylic Acids, Esters, and Amides from 1,1‐Dibromoalkenes via Oxidation of Alkynyl Boronate Intermediates. ChemistrySelect 2021. [DOI: 10.1002/slct.202102150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lei Tao
- State Key Laboratory of Chemo/Biosensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University South Lushan Road Changsha 410082 P. R. China
| | - Wen Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University South Lushan Road Changsha 410082 P. R. China
| | - Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of Education College of Chemistry and Chemical Engineering Hunan University South Lushan Road Changsha 410082 P. R. China
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4
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Rogers JJ, Aggarwal VK. Synthesis of Dysoxylactam A Using Iterative Homologation of Boronic Esters. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jack J. Rogers
- 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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5
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Das KK, Panda S. Functionalization of Heterocycles through 1,2‐Metallate Rearrangement of Boronate Complexes. Chemistry 2020; 26:14270-14282. [DOI: 10.1002/chem.202002573] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/14/2020] [Indexed: 01/27/2023]
Affiliation(s)
| | - Santanu Panda
- Indian Institute of Technology Kharagpur 721302 India
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6
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Węglarz I, Szewczyk M, Mlynarski J. Zinc Acetate Catalyzed Enantioselective Reductive Aldol Reaction of Ketones. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901457] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Izabela Węglarz
- Institute of Organic ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Marcin Szewczyk
- Faculty of ChemistryJagiellonian University Gronostajowa 2 30-387 Krakow Poland
| | - Jacek Mlynarski
- Institute of Organic ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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7
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Ge Y, Cui X, Tan SM, Jiang H, Ren J, Lee N, Lee R, Tan C. Guanidine–Copper Complex Catalyzed Allylic Borylation for the Enantioconvergent Synthesis of Tertiary Cyclic Allylboronates. Angew Chem Int Ed Engl 2019; 58:2382-2386. [DOI: 10.1002/anie.201813490] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/05/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Yicen Ge
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Xi‐Yang Cui
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Siu Min Tan
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Huan Jiang
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Jingyun Ren
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Nicholas Lee
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
| | - Richmond Lee
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Choon‐Hong Tan
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
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8
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Ge Y, Cui XY, Tan SM, Jiang H, Ren J, Lee N, Lee R, Tan CH. Guanidine-Copper Complex Catalyzed Allylic Borylation for the Enantioconvergent Synthesis of Tertiary Cyclic Allylboronates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813490] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yicen Ge
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Xi-Yang Cui
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Siu Min Tan
- Singapore University of Technology and Design; 8 Somapah Road Singapore 487372 Singapore
| | - Huan Jiang
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Jingyun Ren
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Nicholas Lee
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Richmond Lee
- Singapore University of Technology and Design; 8 Somapah Road Singapore 487372 Singapore
| | - Choon-Hong Tan
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
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9
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Millán A, Grigol Martinez PD, Aggarwal VK. Stereocontrolled Synthesis of Polypropionate Fragments based on a Building Block Assembly Strategy using Lithiation-Borylation Methodologies. Chemistry 2017; 24:730-735. [DOI: 10.1002/chem.201704946] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Alba Millán
- School of Chemistry; University of Bristol, Cantock's Close; Bristol BS8 1TS UK
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10
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Collins BSL, Wilson CM, Myers EL, Aggarwal VK. Asymmetrische Synthese sekundärer und tertiärer Boronsäureester. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701963] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Beatrice S. L. Collins
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS Großbritannien
| | - Claire M. Wilson
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS Großbritannien
| | - Eddie L. Myers
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS Großbritannien
| | - Varinder K. Aggarwal
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS Großbritannien
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Collins BSL, Wilson CM, Myers EL, Aggarwal VK. Asymmetric Synthesis of Secondary and Tertiary Boronic Esters. Angew Chem Int Ed Engl 2017; 56:11700-11733. [DOI: 10.1002/anie.201701963] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Indexed: 12/14/2022]
Affiliation(s)
| | - Claire M. Wilson
- 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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12
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Wang Y, Noble A, Sandford C, Aggarwal VK. Enantiospecific Trifluoromethyl-Radical-Induced Three-Component Coupling of Boronic Esters with Furans. Angew Chem Int Ed Engl 2017; 56:1810-1814. [PMID: 28097819 PMCID: PMC5499725 DOI: 10.1002/anie.201611058] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Indexed: 12/14/2022]
Abstract
In the presence of trifluoromethylsulfonium reagents, boronate complexes derived from 2-lithio furan and non-racemic secondary and tertiary alkyl or aryl boronic esters undergo deborylative three-component coupling to give the corresponding 2,5-disubstituted furans with excellent levels of enantiospecificity. The process proceeds via the reaction of boronate complexes with a trifluoromethyl radical, which triggers 1,2-metallate rearrangement upon single-electron oxidation. Alternative electrophiles can also be used in place of trifluoromethylsulfonium reagents to effect similar three-component coupling reactions.
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Affiliation(s)
- Yahui Wang
- 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
| | - Christopher Sandford
- 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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13
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Wang Y, Noble A, Sandford C, Aggarwal VK. Enantiospecific Trifluoromethyl-Radical-Induced Three-Component Coupling of Boronic Esters with Furans. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611058] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yahui Wang
- 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
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14
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Fawcett A, Nitsch D, Ali M, Bateman JM, Myers EL, Aggarwal VK. Regio- and Stereoselective Homologation of 1,2-Bis(Boronic Esters): Stereocontrolled Synthesis of 1,3-Diols and Sch 725674. Angew Chem Int Ed Engl 2016; 55:14663-14667. [PMID: 27781356 PMCID: PMC5129522 DOI: 10.1002/anie.201608406] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Indexed: 01/17/2023]
Abstract
1,2-Bis(boronic esters), derived from the enantioselective diboration of terminal alkenes, can be selectively homologated at the primary boronic ester by using enantioenriched primary/secondary lithiated carbamates or benzoates to give 1,3-bis(boronic esters), which can be subsequently oxidized to the corresponding secondary-secondary and secondary-tertiary 1,3-diols with full stereocontrol. The transformation was applied to a concise total synthesis of the 14-membered macrolactone, Sch 725674. The nine-step synthetic route also features a novel desymmetrizing enantioselective diboration of a divinyl carbinol derivative and high-yielding late-stage cross-metathesis and Yamaguchi macrolactonization reactions.
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Affiliation(s)
- Alexander Fawcett
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Dominik Nitsch
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Muhammad Ali
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
- Department of ChemistryCOMSATS Institute of Information TechnologyUniversity RoadAbbottabad-22060, KPKPakistan
| | - Joseph M. Bateman
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
| | - Eddie L. Myers
- School of ChemistryUniversity of BristolCantock's CloseBristolBS8 1TSUK
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15
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Fawcett A, Nitsch D, Ali M, Bateman JM, Myers EL, Aggarwal VK. Regio- and Stereoselective Homologation of 1,2-Bis(Boronic Esters): Stereocontrolled Synthesis of 1,3-Diols and Sch 725674. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608406] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Alexander Fawcett
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Dominik Nitsch
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Muhammad Ali
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
- Department of Chemistry; COMSATS Institute of Information Technology; University Road Abbottabad- 22060, KPK Pakistan
| | - Joseph M. Bateman
- 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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Guo J, Lu Z. Highly Chemo-, Regio-, and Stereoselective Cobalt-Catalyzed Markovnikov Hydrosilylation of Alkynes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605501] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jun Guo
- Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310058 China
| | - Zhan Lu
- Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310058 China
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17
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Guo J, Lu Z. Highly Chemo-, Regio-, and Stereoselective Cobalt-Catalyzed Markovnikov Hydrosilylation of Alkynes. Angew Chem Int Ed Engl 2016; 55:10835-8. [DOI: 10.1002/anie.201605501] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Indexed: 01/20/2023]
Affiliation(s)
- Jun Guo
- Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310058 China
| | - Zhan Lu
- Department of Chemistry; Zhejiang University; Hangzhou Zhejiang 310058 China
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18
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Dean WM, Šiaučiulis M, Storr TE, Lewis W, Stockman RA. Versatile C(sp2)−C(sp3) Ligand Couplings of Sulfoxides for the Enantioselective Synthesis of Diarylalkanes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- William M. Dean
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Mindaugas Šiaučiulis
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Thomas E. Storr
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - William Lewis
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Robert A. Stockman
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
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19
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Dean WM, Šiaučiulis M, Storr TE, Lewis W, Stockman RA. Versatile C(sp(2) )-C(sp(3) ) Ligand Couplings of Sulfoxides for the Enantioselective Synthesis of Diarylalkanes. Angew Chem Int Ed Engl 2016; 55:10013-6. [PMID: 27435802 DOI: 10.1002/anie.201602264] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/29/2016] [Indexed: 01/01/2023]
Abstract
The reaction of chiral (hetero)aryl benzyl sulfoxides with Grignard reagents affords enantiomerically pure diarylalkanes in up to 98 % yield and greater than 99.5 % enantiomeric excess. This ligand coupling reaction is tolerant to multiple substitution patterns and provides access to diverse areas of chemical space in three operationally simple steps from commercially available reagents. This strategy provides orthogonal access to electron-deficient heteroaromatic compounds, which are traditionally synthesized by transition metal catalyzed cross-couplings, and circumvents common issues associated with proto-demetalation and β-hydride elimination.
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Affiliation(s)
- William M Dean
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Mindaugas Šiaučiulis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Thomas E Storr
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Robert A Stockman
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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20
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Wang Y, Noble A, Myers EL, Aggarwal VK. Enantiospecific Alkynylation of Alkylboronic Esters. Angew Chem Int Ed Engl 2016; 55:4270-4. [PMID: 26934427 PMCID: PMC4804747 DOI: 10.1002/anie.201600599] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 11/10/2022]
Abstract
Enantioenriched secondary and tertiary alkyl pinacolboronic esters undergo enantiospecific deborylative alkynylation through a Zweifel-type alkenylation followed by a 1,2-elimination reaction. The process involves use of α-lithio vinyl bromide or vinyl carbamate species, for which application to Zweifel-type reactions has not previously been explored. The resulting functionalized 1,1-disubstituted alkenes undergo facile base-mediated elimination to generate terminal alkyne products in high yield and excellent levels of enantiospecificity over a wide range of pinacolboronic ester substrates. Furthermore, along with terminal alkynes, internal and silyl-protected alkynes can be formed by simply introducing a suitable carbon- or silicon-based electrophile after the base-mediated 1,2-elimination reaction.
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Affiliation(s)
- Yahui Wang
- 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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21
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Wang Y, Noble A, Myers EL, Aggarwal VK. Enantiospecific Alkynylation of Alkylboronic Esters. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600599] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yahui Wang
- 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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22
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Shoba VM, Thacker NC, Bochat AJ, Takacs JM. Synthesis of Chiral Tertiary Boronic Esters by Oxime-Directed Catalytic Asymmetric Hydroboration. Angew Chem Int Ed Engl 2016; 55:1465-9. [PMID: 26662460 PMCID: PMC4878850 DOI: 10.1002/anie.201509137] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Indexed: 11/11/2022]
Abstract
Chiral boronic esters are useful intermediates in asymmetric synthesis. We have previously shown that carbonyl-directed catalytic asymmetric hydroboration (CAHB) is an efficient approach to the synthesis of functionalized primary and secondary chiral boronic esters. We now report that the oxime-directed CAHB of alkyl-substituted methylidene and trisubstituted alkene substrates by pinacolborane (pinBH) affords oxime-containing chiral tertiary boronic esters with yields up to 87% and enantiomeric ratios up to 96:4 e.r. The utility of the method is demonstrated by the formation of chiral diols and O-substituted hydroxylamines, the generation of quaternary carbon stereocenters through carbon-carbon coupling reactions, and the preparation of chiral 3,4,4-trisubstituted isoxazolines.
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Affiliation(s)
- Veronika M Shoba
- Department of Chemistry, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - Nathan C Thacker
- Department of Chemistry, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - Andrew J Bochat
- Department of Chemistry, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - James M Takacs
- Department of Chemistry, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA.
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23
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Shoba VM, Thacker NC, Bochat AJ, Takacs JM. Synthesis of Chiral Tertiary Boronic Esters by Oxime-Directed Catalytic Asymmetric Hydroboration. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509137] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Veronika M. Shoba
- Department of Chemistry; University of Nebraska-Lincoln; 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - Nathan C. Thacker
- Department of Chemistry; University of Nebraska-Lincoln; 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - Andrew J. Bochat
- Department of Chemistry; University of Nebraska-Lincoln; 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - James M. Takacs
- Department of Chemistry; University of Nebraska-Lincoln; 807 Hamilton Hall Lincoln NE 68588-0304 USA
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Sun H, Kubota K, Hall DG. Reaction Optimization, Scalability, and Mechanistic Insight on the Catalytic Enantioselective Desymmetrization of 1,1‐Diborylalkanes via Suzuki–Miyaura Cross‐Coupling. Chemistry 2015; 21:19186-94. [DOI: 10.1002/chem.201406680] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 03/04/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Ho‐Yan Sun
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton AB, T6G 2G2 (Canada)
| | - Koji Kubota
- Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Sapporo 060‐8628 (Japan)
| | - Dennis G. Hall
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton AB, T6G 2G2 (Canada)
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25
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Stavber G, Časar Z. CuIIand Cu0Catalyzed Mono Borylation of Unsaturated Hydrocarbons with B2pin2: Entering into the Water. ChemCatChem 2014. [DOI: 10.1002/cctc.201402176] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Hesse MJ, Essafi S, Watson CG, Harvey JN, Hirst D, Willis CL, Aggarwal VK. Highly Selective Allylborations of Aldehydes Using α,α-Disubstituted Allylic Pinacol Boronic Esters. Angew Chem Int Ed Engl 2014; 53:6145-9. [DOI: 10.1002/anie.201402995] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Indexed: 11/08/2022]
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Hesse MJ, Essafi S, Watson CG, Harvey JN, Hirst D, Willis CL, Aggarwal VK. Highly Selective Allylborations of Aldehydes Using α,α-Disubstituted Allylic Pinacol Boronic Esters. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402995] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Blair DJ, Fletcher CJ, Wheelhouse KMP, Aggarwal VK. Stereocontrolled Synthesis of Adjacent Acyclic Quaternary-Tertiary Motifs: Application to a Concise Total Synthesis of (−)-Filiformin. Angew Chem Int Ed Engl 2014; 53:5552-5. [DOI: 10.1002/anie.201400944] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Indexed: 11/06/2022]
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Blair DJ, Fletcher CJ, Wheelhouse KMP, Aggarwal VK. Stereocontrolled Synthesis of Adjacent Acyclic Quaternary-Tertiary Motifs: Application to a Concise Total Synthesis of (−)-Filiformin. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400944] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Emerson CR, Zakharov LN, Blakemore PR. Investigation of functionalized α-chloroalkyllithiums for a stereospecific reagent-controlled homologation approach to the analgesic alkaloid (-)-epibatidine. Chemistry 2013; 19:16342-56. [PMID: 24127119 DOI: 10.1002/chem.201302511] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Indexed: 11/10/2022]
Abstract
Four putative functionalized α-chloroakyllithiums RCH2CHLiCl, where R=CHCH2(18 a), CCH (18 b), CH2OBn (18 c), and CH[O(CH2)2O] (18 d), were generated in situ by sulfoxide-lithium exchange from α-chlorosulfoxides, and investigated for the stereospecific reagent-controlled homologation (StReCH) of phenethyl and 2-chloropyrid-5-yl (17) pinacol boronic esters. Deuterium labeling experiments revealed that α-chloroalkyllithiums are quenched by proton transfer from their α-chlorosulfoxide precursors and it was established that this effect compromises the yield of StReCH reactions. Use of α-deuterated α-chlorosulfoxides was discovered to ameliorate the problem by retarding the rate of acid-base chemistry between the carbenoid and its precursor. Carbenoids 18 a and 18 b showed poor StReCH efficacy, particularly the propargyl group bearing carbenoid 18 b, the instability of which was attributed to a facile 1,2-hydride shift. By contrast, 18 d, a carbenoid that benefits from a stabilizing interaction between O and Li atoms gave good StReCH yields. Boronate 17 was chain extended by carbenoids 18 a, 18 b, and 18 d in 16, 0, and 68% yield, respectively; α-deuterated isotopomers D-18 a and D-18 d gave yields of 33 and 79% for the same reaction. Double StReCH of 17 was pursued to target contiguous stereodiads appropriate for the total synthesis of (-)-epibatidine (15). One-pot double StReCH of boronate 17 by two exposures to (S)-D-18 a (≤66 % ee), followed by work-up with KOOH, gave the expected stereodiad product in 16% yield (d.r.~67:33). The comparable reaction using two exposures to (S)-D-18 d (≤90% ee) delivered the expected bisacetal containing stereodiad (R,R)-DD-48 in 40% yield (≥98% ee, d.r.=85:15). Double StReCH of 17 using (S)-D-18 d (≤90% ee) followed by (R)-D-18 d (≤90% ee) likewise gave (R,S)-DD-48 in 49% yield (≥97% ee, d.r.=79:21). (R,S)-DD-48 was converted to a dideuterated isotopomer of a synthetic intermediate in Corey's synthesis of 15.
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Oda S, Yamamoto H. Generation of organolithium compounds bearing super silyl ester and their application to Matteson rearrangement. Angew Chem Int Ed Engl 2013; 52:8165-8. [PMID: 23794231 PMCID: PMC3827962 DOI: 10.1002/anie.201304225] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Susumu Oda
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, IL 60637 (USA), Fax: (+1)773-702-0805
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Oda S, Yamamoto H. Generation of Organolithium Compounds bearing Super Silyl Ester and their Application to Matteson Rearrangement. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304225] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Partridge BM, Chausset-Boissarie L, Burns M, Pulis AP, Aggarwal VK. Enantioselective Synthesis and Cross-Coupling of Tertiary Propargylic Boronic Esters Using Lithiation-Borylation of Propargylic Carbamates. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203198] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Partridge BM, Chausset-Boissarie L, Burns M, Pulis AP, Aggarwal VK. Enantioselective synthesis and cross-coupling of tertiary propargylic boronic esters using lithiation-borylation of propargylic carbamates. Angew Chem Int Ed Engl 2012; 51:11795-9. [PMID: 23076714 DOI: 10.1002/anie.201203198] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Indexed: 11/12/2022]
Affiliation(s)
- Benjamin M Partridge
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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Scott HK, Aggarwal VK. Highly Enantioselective Synthesis of Tertiary Boronic Esters and their Stereospecific Conversion to other Functional Groups and Quaternary Stereocentres. Chemistry 2011; 17:13124-32. [DOI: 10.1002/chem.201102581] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Perna FM, Salomone A, Dammacco M, Florio S, Capriati V. Solvent and TMEDA Effects on the Configurational Stability of Chiral Lithiated Aryloxiranes. Chemistry 2011; 17:8216-25. [DOI: 10.1002/chem.201100351] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Indexed: 11/10/2022]
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Shimizu M. Construction of asymmetric quaternary carbon centers with high enantioselectivity. Angew Chem Int Ed Engl 2011; 50:5998-6000. [PMID: 21612008 DOI: 10.1002/anie.201101720] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Indexed: 11/08/2022]
Affiliation(s)
- Masaki Shimizu
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto University Katsura, Nishikyo-ku, Kyoto, Japan.
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Shimizu M. Aufbau von asymmetrischen quartären Kohlenstoffzentren mit hoher Enantioselektivität. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101720] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Feng X, Yun J. Conjugate boration of β,β-disubstituted unsaturated esters: asymmetric synthesis of functionalized chiral tertiary organoboronic esters. Chemistry 2011; 16:13609-12. [PMID: 21053219 DOI: 10.1002/chem.201002361] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xinhui Feng
- Department of Chemistry and Institute of Basic Science, Sungkyunkwan University, Suwon 440-746, Korea
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Sonawane RP, Jheengut V, Rabalakos C, Larouche-Gauthier R, Scott HK, Aggarwal VK. Enantioselective construction of quaternary stereogenic centers from tertiary boronic esters: methodology and applications. Angew Chem Int Ed Engl 2011; 50:3760-3. [PMID: 21374774 DOI: 10.1002/anie.201008067] [Citation(s) in RCA: 167] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Indexed: 11/10/2022]
Affiliation(s)
- Ravindra P Sonawane
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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Enantioselective Construction of Quaternary Stereogenic Centers from Tertiary Boronic Esters: Methodology and Applications. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201008067] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Synthesis of Highly Enantioenriched C-Tertiary Amines From Boronic Esters: Application to the Synthesis of Igmesine. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201006037] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bagutski V, Elford TG, Aggarwal VK. Synthesis of Highly Enantioenriched C-Tertiary Amines From Boronic Esters: Application to the Synthesis of Igmesine. Angew Chem Int Ed Engl 2010; 50:1080-3. [DOI: 10.1002/anie.201006037] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Indexed: 11/06/2022]
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Seebach D. Erzeugung sekundärer, tertiärer und quartärer Zentren durch geminale Disubstitution von Carbonyl‐Sauerstoffatomen. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003823] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dieter Seebach
- Laboratorium für Organische Chemie, Departement für Chemie und Angewandte Biowissenschaften, ETH‐Zürich, Hönggerberg HCI H331, Wolfgang‐Pauli‐Strasse 10, 8093 Zürich (Schweiz), Fax: (+41) 44‐632‐1144 http://infosee.ethz.ch/seebach/seebach.html
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Seebach D. Generation of Secondary, Tertiary, and Quaternary Centers by Geminal Disubstitution of Carbonyl Oxygens. Angew Chem Int Ed Engl 2010; 50:96-101. [DOI: 10.1002/anie.201003823] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dieter Seebach
- Laboratorium für Organische Chemie, Departement für Chemie und Angewandte Biowissenschaften, ETH‐Zürich, Hönggerberg HCI H331, Wolfgang‐Pauli‐Strasse 10, 8093 Zürich (Schweiz), Fax: (+41) 44‐632‐1144 http://infosee.ethz.ch/seebach/seebach.html
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