1
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Komaki T, Sato Y, Uchiyama M, Tanaka K, Nagashima Y. Visible-Light-Induced trans-Hydroboration of Diaryl Alkynes Utilizing Excited State of Borate Complexes. Org Lett 2024; 26:2180-2185. [PMID: 38466232 DOI: 10.1021/acs.orglett.4c00268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
We have developed visible-light-induced trans-hydroboration of diaryl alkynes via direct photoexcitation of in-situ-generated diboron complexes, affording previously elusive (E)-1,2-diaryl-vinylboronates with high stereoselectivity. Experimental, spectroscopic, and theoretical mechanistic studies revealed that the triplet-state borate complex facilitates B-B bond cleavage and the desired C-B bond formation. This methodology does not require any catalyst and is operationally simple. The highly borylated 1,2-diaryl alkenes [1-(2-borylphenyl)vinyl)boronates] are shown to be useful as building blocks.
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Affiliation(s)
- Takahiro Komaki
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yu Sato
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Ken Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yuki Nagashima
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8550, Japan
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2
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Chen Z, Nie B, Li X, Liu T, Li C, Huang J. Ligand-controlled regiodivergent Ni-catalyzed trans-hydroboration/carboboration of internal alkynes with B 2pin 2. Chem Sci 2024; 15:2236-2242. [PMID: 38332812 PMCID: PMC10848681 DOI: 10.1039/d3sc04184k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 01/04/2024] [Indexed: 02/10/2024] Open
Abstract
Unprecedented regioselective trans-hydroboration and carboboration of unbiased electronically internal alkynes were realized via a nickel catalysis system with the aid of the directing group strategy. Furthermore, the excellent α- and β-regioselectivity could be accurately switched by the nitrogen ligand (terpy) and phosphine ligand (Xantphos). Mechanistic studies provided an insight into the rational reaction process, that underwent the cis-to-trans isomerization of alkenyl nickel species. This transformation not only expands the scope of transition-metal-catalyzed boration of internal alkynes but also, more particularly, portrays the vast prospects of the directing group strategy in the selective functionalization of unactivated alkynes.
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Affiliation(s)
- Zunsheng Chen
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases (Gannan Medical University), Ministry of Education, School of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
| | - Biao Nie
- State Key Laboratory of Anti-Infective Drug Development, Sunshine Lake Pharma Company, Ltd Dongguan 523871 P. R. China
| | - Xiaoning Li
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases (Gannan Medical University), Ministry of Education, School of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
| | - Teng Liu
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases (Gannan Medical University), Ministry of Education, School of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
| | - Chunsheng Li
- School of Chemistry and Chemical Engineering, Zhaoqing University Zhaoqing 526060 P. R. China
| | - Jiuzhong Huang
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases (Gannan Medical University), Ministry of Education, School of Pharmacy, Gannan Medical University Ganzhou 341000 P. R. China
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3
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Fürstner A. How to Break the Law:
trans
‐Hydroboration and
gem
‐Hydroboration of Alkynes. Isr J Chem 2023. [DOI: 10.1002/ijch.202300004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Affiliation(s)
- Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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4
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Zou X, Zheng L, Zhuo X, Zhong Y, Wu Y, Yang B, He Q, Guo W. Copper-Promoted Aerobic Oxidative [3+2] Cycloaddition Reactions of N,N-Disubstituted Hydrazines with Alkynoates: Access to Substituted Pyrazoles. J Org Chem 2023; 88:2190-2206. [PMID: 36724037 DOI: 10.1021/acs.joc.2c02610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A copper-promoted aerobic oxidative [3+2] cycloaddition reaction for the synthesis of various substituted pyrazoles from N,N-disubstituted hydrazines with alkynoates in the presence of bases is developed. This work involves a direct C(sp3)-H functionalization and the formation of new C-C/C-N bonds. In this strategy, inexpensive and easily available Cu2O serves as the promoter and air acts as the green oxidant. The reaction exhibits the advantages of high atom and step economy, high regioselectivity, and easy operation.
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Affiliation(s)
- Xiaoying Zou
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Lvyin Zheng
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Xiaoya Zhuo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Yumei Zhong
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Yingying Wu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Beining Yang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Qifang He
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
| | - Wei Guo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, China
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5
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Jos S, Szwetkowski C, Slebodnick C, Ricker R, Chan KL, Chan WC, Radius U, Lin Z, Marder TB, Santos WL. Transition Metal-Free Regio- and Stereo-Selective trans Hydroboration of 1,3-Diynes: A Phosphine-Catalyzed Access to (E)-1-Boryl-1,3-Enynes. Chemistry 2022; 28:e202202349. [PMID: 35917135 PMCID: PMC9804376 DOI: 10.1002/chem.202202349] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Indexed: 01/05/2023]
Abstract
We report a transition metal-free, regio- and stereo-selective, phosphine-catalyzed method for the trans hydroboration of 1,3-diynes with pinacolborane that affords (E)-1-boryl-1,3-enynes. The reaction proceeds with excellent selectivity for boron addition to the external carbon of the 1,3-diyne framework as unambiguously established by NMR and X-ray crystallographic studies. The reaction displays a broad substrate scope including unsymmetrical diynes to generate products in high yield (up to 95 %). Experimental and theoretical studies suggest that phosphine attack on the alkyne is a key process in the catalytic cycle.
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Affiliation(s)
- Swetha Jos
- Department of ChemistryVirginia TechBlacksburgVirginiaUnited States
| | | | - Carla Slebodnick
- Department of ChemistryVirginia TechBlacksburgVirginiaUnited States
| | - Robert Ricker
- Institute of Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgGermany
| | - Ka Lok Chan
- Department of ChemistryThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina
| | - Wing Chun Chan
- Department of ChemistryThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina
| | - Udo Radius
- Institute of Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgGermany
| | - Zhenyang Lin
- Department of ChemistryThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina
| | - Todd B. Marder
- Institute of Inorganic ChemistryInstitute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgGermany
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6
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Seok JE, Kim HT, Kim J, Lee JH, Jaladi AK, Hwang H, An DK. Effective magnesium‐catalyzed hydroboration of nitriles and imines. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ji Eun Seok
- Kangwon National University College of Natural Sciences Chemistry KOREA, REPUBLIC OF
| | - Hyun Tae Kim
- Kangwon National University College of Natural Sciences Chemistry KOREA, REPUBLIC OF
| | - Jaeho Kim
- Kangwon National University College of Natural Sciences Chemistry KOREA, REPUBLIC OF
| | - Ji Hye Lee
- Kangwon National University Chemistry KOREA, REPUBLIC OF
| | | | - Hyonseok Hwang
- Kangwon National University College of Natural Sciences Chemistry KOREA, REPUBLIC OF
| | - Duk Keun An
- Kangwon National University Chemistry KangwondoHyoja-2-dong 200-701 Chuncheon KOREA, REPUBLIC OF
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7
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Feng Q, Li S, Li Z, Yan Q, Lin X, Song L, Zhang X, Wu YD, Sun J. Ru-Catalyzed Hydroboration of Ynones Leads to a Nontraditional Mode of Reactivity. J Am Chem Soc 2022; 144:14846-14855. [PMID: 35900878 DOI: 10.1021/jacs.2c06024] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Although hydroboration of simple ketones and alkynes have been well-established, little is known about the unique hydroboration reactivity for ynones, a family of important building blocks. Herein we report a new reaction mode of ynones leading to structurally novel and synthetically useful but previously inaccessible products, vinyl α-hydroxylboronates, under mild ruthenium-catalyzed hydroboration conditions. This reaction features high efficiency, a broad scope, and complete chemo-, regio-, and stereoselectivity, in spite of many possible competitive pathways. Both control experiments and detailed DFT studies suggested a two-step mechanism, involving initial rate-determining conjugate addition of hydroborane to form the key boryl allenolate intermediate followed by a fast second hydroboration of the enolate motif of the allenolate. Notably, direct 1,4-addition of hydroborane to carbonyl-conjugated alkynes also represents a new mode of reactivity. Despite the overwhelming complexity of this process, which involves selectivity control in almost every step, a thorough and detailed computation on a large set of possible transition states explained the unusual reactivity and intrinsic origin of selectivity.
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Affiliation(s)
- Qiang Feng
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
| | - Shijia Li
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China.,Shenzhen Bay Laboratory, Shenzhen 518055, China
| | - Zhiyang Li
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
| | - Qiaolin Yan
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
| | - Xiangfeng Lin
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China
| | - Lijuan Song
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Xinhao Zhang
- Shenzhen Bay Laboratory, Shenzhen 518055, China.,Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yun-Dong Wu
- Shenzhen Bay Laboratory, Shenzhen 518055, China.,Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Jianwei Sun
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR 999077, China.,Shenzhen Research Institute, HKUST, No. 9 Yuexing 1st Road, Shenzhen 518057, China
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8
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Altarejos J, Valero A, Manzano R, Carreras J. Synthesis of Tri‐ and Tetrasubstituted Alkenyl Boronates from Alkynes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Julia Altarejos
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica SPAIN
| | - Antonio Valero
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica SPAIN
| | - Rubén Manzano
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica SPAIN
| | - Javier Carreras
- Universidad de Alcalá Facultad de Ciencias: Universidad de Alcala Facultad de Ciencias Química Orgánica y Química Inorgánica Carretera Madrid-Barcelona km 33,6, Campus Universitario.Facultad de Farmacia 28805 Alcalá de Henares SPAIN
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9
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Corpas J, Gomez-Mendoza M, Ramírez-Cárdenas J, de la Peña O'Shea VA, Mauleón P, Gómez Arrayás R, Carretero JC. One-Metal/Two-Ligand for Dual Activation Tandem Catalysis: Photoinduced Cu-Catalyzed Anti-hydroboration of Alkynes. J Am Chem Soc 2022; 144:13006-13017. [PMID: 35786909 PMCID: PMC9348838 DOI: 10.1021/jacs.2c05805] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
![]()
A dual catalyst system
based on ligand exchange of two diphosphine
ligands possessing different properties in a copper complex has been
devised to merge metal- and photocatalytic activation modes. This
strategy has been applied to the formal anti-hydroboration of activated
internal alkynes via a tandem sequence in which Cu/Xantphos catalyzes
the B2pin2-syn-hydroboration
of the alkyne whereas Cu/BINAP serves as a photocatalyst for visible
light-mediated isomerization of the resulting alkenyl boronic ester.
Photochemical studies by means of UV–vis absorption, steady-state
and time-resolved fluorescence, and transient absorption spectroscopy
have allowed characterizing the photoactive Cu/BINAP species in the
isomerization reaction and its interaction with the intermediate syn-alkenyl boronic ester through energy transfer from the
triplet excited state of the copper catalyst. In addition, mechanistic
studies shed light into catalyst speciation and the interplay between
the two catalytic cycles as critical success factors.
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Affiliation(s)
- Javier Corpas
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
| | - Miguel Gomez-Mendoza
- Photoactivated Processes Unit, IMDEA Energy Institute, Technological Park of Mostoles, Avda. Ramón de la Sagra 3, 28935 Madrid, Spain
| | - Jonathan Ramírez-Cárdenas
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain
| | - Víctor A de la Peña O'Shea
- Photoactivated Processes Unit, IMDEA Energy Institute, Technological Park of Mostoles, Avda. Ramón de la Sagra 3, 28935 Madrid, Spain
| | - Pablo Mauleón
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), UAM, 28049 Madrid, Spain
| | - Ramón Gómez Arrayás
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), UAM, 28049 Madrid, Spain
| | - Juan C Carretero
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Facultad de Ciencias, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Sciences (IAdChem), UAM, 28049 Madrid, Spain
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10
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Hümpfner E, Buzsáki D, Kelemen Z. DFT mechanistic investigation of the 1,2‐reduction of α,β‐unsaturated ynones. ChemistrySelect 2022. [DOI: 10.1002/slct.202201768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Evelyn Hümpfner
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Műegyetem rakpart 3 H-1111 Budapest Hungary
| | - Dániel Buzsáki
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Műegyetem rakpart 3 H-1111 Budapest Hungary
- MTA-BME Computation Driven Chemistry Research Group Műegyetem rakpart 3 H-1111 Budapest Hungary
| | - Zsolt Kelemen
- Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Műegyetem rakpart 3 H-1111 Budapest Hungary
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11
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Bowen J, Slebodnick C, Santos WL. Phosphine-catalyzed hydroboration of propiolonitriles: access to ( E)-1,2-vinylcyanotrifluoroborate derivatives. Chem Commun (Camb) 2022; 58:5984-5987. [PMID: 35481802 DOI: 10.1039/d2cc00603k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report an organocatalytic trans hydroboration of 3-substituted-propiolonitriles. In the presence of catalytic amounts of tributylphosphine and pinacolborane, regioselective hydroboration of the internal triple bond proceeded in a stereoselective fashion under mild conditions to afford the corresponding (E)-1,2-vinylcyanoborane derivatives. The mechanism is proposed to occur through a 1,2-phosphine addition instead of a canonical 1,4-conjugate addition pathway.
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Affiliation(s)
- Johnathan Bowen
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Carla Slebodnick
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA.
| | - Webster L Santos
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA.
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12
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Grams RJ, Lawal MM, Szwetkowski C, Foster D, Rosenblum CA, Slebodnick C, Welborn VV, Santos WL. Organocatalytic
Trans
Semireduction of Primary and Secondary Propiolamides: Substrate Scope and Mechanistic Studies. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- R. Justin Grams
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Monsurat M. Lawal
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Connor Szwetkowski
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Daniel Foster
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Carol Ann Rosenblum
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Carla Slebodnick
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Valerie Vaissier Welborn
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
| | - Webster L. Santos
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg Virginia 24061 United States
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13
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Wang J, Zhou H, Wei J, Liu F, Wang T. Metal-free trans-hydroboration without a B-H bond: reactions of propargyl amines with Lewis acidic boranes. Chem Commun (Camb) 2022; 58:6910-6913. [DOI: 10.1039/d2cc02687b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first alkyne trans-hydroboration reaction without a B-H bond was described. This was achieved by reactions of propargyl amines with Lewis acidic boranes under mild conditions. The mechanism involved borane-mediated...
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14
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Huang W, Ding X, Zi Y. Research Progress of Vinyl/Aryl Phosphonium Salts in Organic Synthesis. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202107065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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trans-Selective hydrocyanation of ynoates, ynones and ynoic acids catalyzed by nucleophilic phosphines. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Rej S, Das A, Panda TK. Overview of Regioselective and Stereoselective Catalytic Hydroboration of Alkynes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100950] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Supriya Rej
- Institut für Chemie Technische Universität Berlin Berlin, Strasse des 17. Juni 115 10623 Berlin Germany
| | - Amrita Das
- Department of Applied Chemistry Faculty of Engineering Osaka University 565-0871 Suita Osaka Japan
| | - Tarun K. Panda
- Department of Chemistry Indian Institute of Technology Hyderabad Kandi 502285 Sangareddy Telangana India
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17
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Zi Y, Wagner K, Schömberg F, Vilotijevic I. Selective C-H chalcogenation of thiazoles via thiazol-2-yl-phosphonium salts. Org Biomol Chem 2021; 18:5183-5191. [PMID: 32588864 DOI: 10.1039/d0ob00684j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Thiazoles and benzothiazoles undergo regioselective C2-H chalcogenation via the sequence of thiazole C2-functionalization with phosphines to produce phosphonium salts which in turn react with S- and Se-centered nucleophiles to give products of C2-H chalcogenation and allow for recovery of the starting phosphine. The atom economical sequence proceeds under mild conditions and features broad scope for both the nucleophiles (electron-rich, electron-poor, sterically hindered thiols) and the various substituted benzothiazoles. The access to the substituted medicinally relevant C2-thio benzothiazoles also enables stereoselectivity improvements in the modified Julia olefinations.
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Affiliation(s)
- You Zi
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
| | - Konrad Wagner
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
| | - Fritz Schömberg
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
| | - Ivan Vilotijevic
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
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18
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Hirano K, Uchiyama M. Inter‐Element Boration Reactions of Carbon‐Carbon Multiple Bonds
via
Lewis‐Basic Activation of Boron Reagents. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001610] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Keiichi Hirano
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Cluster of Pioneering Research (CPR) Advanced Elements Chemistry Laboratory, RIKEN 2-1 Hirosawa Wako-shi 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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Seifert F, Drikermann D, Steinmetzer J, Zi Y, Kupfer S, Vilotijevic I. Z-Selective phosphine promoted 1,4-reduction of ynoates and propynoic amides in the presence of water. Org Biomol Chem 2021; 19:6092-6097. [PMID: 34152338 DOI: 10.1039/d1ob00909e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphine-mediated reductions of substituted propynoic esters and amides in the presence of water yield the partially reduced α,β-unsaturated esters and amides with high Z-selectivity. The competitive in situ Z to E-isomerization of the product in some cases lowers the Z to E ratios of the isolated α,β-unsaturated carbonyl products. Reaction time and the amounts of phosphine and water in the reaction mixture are the key experimental factors which control the selectivity by preventing or reducing the rates of Z- to E-product isomerization. Close reaction monitoring enables isolation of the Z-alkenes with high selectivities. The computational results suggest that the reactions could be highly Z-selective owing to the stereoselective formation of the E-P-hydroxyphosphorane intermediate.
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Affiliation(s)
- Fabian Seifert
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
| | - Denis Drikermann
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
| | - Johannes Steinmetzer
- Institute for Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - You Zi
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
| | - Stephan Kupfer
- Institute for Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Ivan Vilotijevic
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany.
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20
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Fritzemeier RG, Nekvinda J, Vogels CM, Rosenblum CA, Slebodnick C, Westcott SA, Santos WL. Organocatalytic
trans
Phosphinoboration of Internal Alkynes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Jan Nekvinda
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Carol Ann Rosenblum
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Carla Slebodnick
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Webster L. Santos
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
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21
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Fritzemeier RG, Nekvinda J, Vogels CM, Rosenblum CA, Slebodnick C, Westcott SA, Santos WL. Organocatalytic
trans
Phosphinoboration of Internal Alkynes. Angew Chem Int Ed Engl 2020; 59:14358-14362. [PMID: 32406101 DOI: 10.1002/anie.202006096] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Indexed: 01/10/2023]
Affiliation(s)
| | - Jan Nekvinda
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Carol Ann Rosenblum
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Carla Slebodnick
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Webster L. Santos
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
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22
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Trofimov BA, Belyaeva KV. Zwitterionic adducts of N-heterocycles to electrophilic acetylenes as a master key to diversity and complexity of fundamental nitrogen heterocycles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151991] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Zi Y, Schömberg F, Wagner K, Vilotijevic I. C–H Functionalization of Benzothiazoles via Thiazol-2-yl-phosphonium Intermediates. Org Lett 2020; 22:3407-3411. [DOI: 10.1021/acs.orglett.0c00882] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- You Zi
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Humboldtstr. 10, 07743 Jena, Germany
| | - Fritz Schömberg
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Humboldtstr. 10, 07743 Jena, Germany
| | - Konrad Wagner
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Humboldtstr. 10, 07743 Jena, Germany
| | - Ivan Vilotijevic
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University, Jena, Humboldtstr. 10, 07743 Jena, Germany
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24
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Lange M, Zi Y, Vilotijevic I. Enantioselective Synthesis of Pyrrolizin-1-ones via Lewis Base Catalyzed N-Allylation of N-Silyl Pyrrole Latent Nucleophiles. J Org Chem 2020; 85:1259-1269. [PMID: 31802664 DOI: 10.1021/acs.joc.9b02819] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Pyrrolizidine alkaloids and their derivatives often feature interesting biological activities. A class of substituted 2,3-dihydro-1H-pyrrolizin-1-one derivatives has been explored as a potential treatment for Alzheimer's disease, but enantioselective synthesis of these molecules is still elusive. We report that enantioselective N-allylation of N-silyl pyrrole latent nucleophiles with allylic fluorides followed by hydrogenation and diastereoselective Friedel-Crafts cyclization constitute an efficient synthetic route to access enantioenriched substituted 2,3-dihydro-1H-pyrrolizin-1-ones.
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Affiliation(s)
- Markus Lange
- Institute of Organic Chemistry and Macromolecular Chemistry , Friedrich Schiller University Jena , Humboldtstr.10 , 07743 Jena , Germany
| | - You Zi
- Institute of Organic Chemistry and Macromolecular Chemistry , Friedrich Schiller University Jena , Humboldtstr.10 , 07743 Jena , Germany
| | - Ivan Vilotijevic
- Institute of Organic Chemistry and Macromolecular Chemistry , Friedrich Schiller University Jena , Humboldtstr.10 , 07743 Jena , Germany
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25
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Skelly PW, Sae-Jew J, Kitos Vasconcelos AP, Tasnim J, Li L, Raskatov JA, Braslau R. Relative Rates of Metal-Free Azide-Alkyne Cycloadditions: Tunability over 3 Orders of Magnitude. J Org Chem 2019; 84:13615-13623. [PMID: 31560548 DOI: 10.1021/acs.joc.9b01887] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The thermal (3 + 2) dipolar azide-alkyne cycloaddition, proceeding without copper or strained alkynes, is an underutilized ligation with potential applications in materials, bioorganic, and synthetic chemistry. Herein, we investigate the effects of alkyne substitution on the rate of this reaction, both experimentally and computationally. Electron-withdrawing groups accelerate the reaction, providing a range of relative rates from 1.0 to 2100 between the slowest and fastest alkynes studied. Unexpectedly, aryl groups conjugated to the alkyne significantly retard the reaction rate. In contrast, a sulfonyl, ester-substituted alkyne is reactive enough that it couples with an azide at room temperature in a few hours. This reactivity scale should provide a guide to those who wish to use this ligation under mild conditions.
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Affiliation(s)
- Patrick W Skelly
- Department Chemistry and Biochemistry , University of California, Santa Cruz , 1156 High Street , Santa Cruz , California 95064 , United States
| | - Jirapon Sae-Jew
- Department Chemistry and Biochemistry , University of California, Santa Cruz , 1156 High Street , Santa Cruz , California 95064 , United States
| | - Ana Paula Kitos Vasconcelos
- Department Chemistry and Biochemistry , University of California, Santa Cruz , 1156 High Street , Santa Cruz , California 95064 , United States
| | - Jerin Tasnim
- Department Chemistry and Biochemistry , University of California, Santa Cruz , 1156 High Street , Santa Cruz , California 95064 , United States
| | - Longbo Li
- Department Chemistry and Biochemistry , University of California, Santa Cruz , 1156 High Street , Santa Cruz , California 95064 , United States
| | - Jevgenij A Raskatov
- Department Chemistry and Biochemistry , University of California, Santa Cruz , 1156 High Street , Santa Cruz , California 95064 , United States
| | - Rebecca Braslau
- Department Chemistry and Biochemistry , University of California, Santa Cruz , 1156 High Street , Santa Cruz , California 95064 , United States
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26
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Fiore VA, Freisler C, Maas G. 1,5-Phosphonium betaines from N-triflylpropiolamides, triphenylphosphane, and active methylene compounds. Beilstein J Org Chem 2019; 15:2603-2611. [PMID: 31728174 PMCID: PMC6839568 DOI: 10.3762/bjoc.15.253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 10/17/2019] [Indexed: 11/23/2022] Open
Abstract
N-Phenyl-N-(trifluoromethylsulfonyl)propiolamides react with triphenylphosphane in the presence of various active methylene compounds CH2XY in a 1:1:1 molar ratio to furnish 1-phosphonium-5-oxabetaines, Ph3P+-C(R)=CH-C(O-)=CXY. These betaines are formed preferentially, but not exclusively, as E-diastereoisomers with respect to the vinylic double bond. In some cases, separation of the two diastereoisomers was achieved by fractionating crystallization. Structure determination by X-ray diffraction analysis revealed marked conformational differences around the CH-C(O-) single bond of E and Z-isomers and extended charge delocalization in the anionic part.
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Affiliation(s)
- Vito A Fiore
- Institute of Organic Chemistry I, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Chiara Freisler
- Institute of Organic Chemistry I, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Gerhard Maas
- Institute of Organic Chemistry I, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
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27
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Yamamoto K, Mohara Y, Mutoh Y, Saito S. Ruthenium-Catalyzed (Z)-Selective Hydroboration of Terminal Alkynes with Naphthalene-1,8-diaminatoborane. J Am Chem Soc 2019; 141:17042-17047. [DOI: 10.1021/jacs.9b06910] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kensuke Yamamoto
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Yusei Mohara
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Yuichiro Mutoh
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Shinichi Saito
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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28
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Grams RJ, Fritzemeier RG, Slebodnick C, Santos WL. trans-Hydroboration of Propiolamides: Access to Primary and Secondary (E)-β-Borylacrylamides. Org Lett 2019; 21:6795-6799. [PMID: 31393740 DOI: 10.1021/acs.orglett.9b02408] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. Justin Grams
- Department of Chemistry, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Russell G. Fritzemeier
- Department of Chemistry, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Carla Slebodnick
- Department of Chemistry, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Webster L. Santos
- Department of Chemistry, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
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29
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Longobardi LE, Fürstner A. trans
‐Hydroboration of Propargyl Alcohol Derivatives and Related Substrates. Chemistry 2019; 25:10063-10068. [DOI: 10.1002/chem.201902228] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/07/2019] [Indexed: 01/04/2023]
Affiliation(s)
- Lauren E. Longobardi
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim/Ruhr Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim/Ruhr Germany
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30
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Dasgupta R, Das S, Hiwase S, Pati SK, Khan S. N-Heterocyclic Germylene and Stannylene Catalyzed Cyanosilylation and Hydroboration of Aldehydes. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00673] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rajarshi Dasgupta
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411 008, India
| | - Shubhajit Das
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur-Bangalore 560064, India
| | - Shweta Hiwase
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411 008, India
| | - Swapan K. Pati
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur-Bangalore 560064, India
| | - Shabana Khan
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411 008, India
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31
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Deng ZX, Xie ZZ, Zheng Y, Xiao JA, Wang RJ, Xiang HY, Yang H. Intramolecular hydrogen-bonding-assisted phosphine-catalysed [3 + 2] cyclisation of ynones with o-hydroxy/amino benzaldehydes. Org Biomol Chem 2019; 17:2187-2191. [DOI: 10.1039/c9ob00056a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new strategy for the synthesis of functionalized tetrahydrofuran derivatives was developed via a phosphine-catalysed [3 + 2] annulation reaction of aromatic aldehydes with 4-phenylbut-3-yn-2-one.
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Affiliation(s)
- Zhi-Xiong Deng
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Zhen-Zhen Xie
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Yu Zheng
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Jun-An Xiao
- College of Chemistry and Materials Science
- Guangxi Teachers Education University
- Nanning 530001
- P. R. China
| | - Rui-Jia Wang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Hao-Yue Xiang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
- Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety
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