1
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Rajput S, Sahoo RK, Sarkar N, Nembenna S. Gallium Hydride-Catalyzed Selective Hydroboration of Unsaturated Organic Substrates. Chempluschem 2024; 89:e202300737. [PMID: 38437065 DOI: 10.1002/cplu.202300737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/04/2024] [Accepted: 03/04/2024] [Indexed: 03/06/2024]
Abstract
The first examples of tetrasubstituted conjugated bis-guanidinate (CBG) supported monomeric and thermally stable gallium dihalides [LGaX2], (X=Cl (Ga-Cl), I (Ga-I)) and dihydride (Ga-H) [LGaH2] (where L={(ArHN)(ArN)-C=N-C=(NAr)(NHAr)}; Ar=2,6-Et2-C6H3) compounds are reported. The reaction of in situ generated LLi with 1.0 equiv. GaX3 (X=Cl, I) afforded compounds Ga-Cl and Ga-I. The reaction between Ga-Cl and Li[HBEt3] in benzene yielded the dihydride compound Ga-H. All reported compounds (Ga-Cl, Ga-I, and Ga-H) were characterized by NMR, HRMS, and single-crystal X-ray diffraction studies. Ga-H was probed for the hydroboration of carbodiimides (CDI), isocyanates, and isothiocyanates with HBpin. Compound Ga-H was also found effective for the catalytic hydroboration of imines, nitriles, alkynes, esters, and formates, affording the corresponding products in quantitative yields. Stoichiometric reactions with a CDI were performed to establish the catalytic cycle.
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Affiliation(s)
- Sagrika Rajput
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
| | - Rajata Kumar Sahoo
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
| | - Nabin Sarkar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
| | - Sharanappa Nembenna
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
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2
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Patro AG, Sahoo RK, Nembenna S. Zinc hydride catalyzed hydroboration of esters. Dalton Trans 2024; 53:3621-3628. [PMID: 38289250 DOI: 10.1039/d3dt04084d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
The conjugated bis-guanidinate (CBG)-supported zinc hydride {LZnH}2; L = {(ArHN)(ArN)-CN-C(NAr)(NHAr); Ar = 2,6-Et2-C6H3} (I) is utilized as a catalyst for the hydroboration of esters with pinacolborane (HBpin) under mild reaction conditions. Various aryl and alkyl substrates containing electron-donating, withdrawing, and cyclic groups of esters are effectively converted into alkoxy boronate esters as products upon hydroboration. Furthermore, stoichiometric experiments have been performed to understand the plausible reaction mechanism for the hydroboration of esters. Additionally, complex (I) was used for the hydroboration of carbonate, carboxylic acid, and anhydride substrates to showcase the broad substrate scope.
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Affiliation(s)
- A Ganesh Patro
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI) Bhubaneswar, 752050, India.
| | - Rajata Kumar Sahoo
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI) Bhubaneswar, 752050, India.
| | - Sharanappa Nembenna
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI) Bhubaneswar, 752050, India.
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3
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Paul S, Panda S. Synthesis of Boronic Esters from Organometallic Reagents and Bis(pinacolato)diboron. Chem Asian J 2024; 19:e202300911. [PMID: 38131458 DOI: 10.1002/asia.202300911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 12/04/2023] [Accepted: 12/20/2023] [Indexed: 12/23/2023]
Abstract
Synthesis of alkyl, aryl, and vinyl boronic esters carrying various chiral and achiral diol-protecting groups were synthesized starting from the corresponding alkyl, aryl, and vinyl lithium or Grignard reagents. Good to excellent yields were obtained for a large range of substrates. The reaction can be conducted in a gram scale to obtain the product over 80 % yield. This approach provides direct access to neopentyl, pinene, and other boronic esters that are difficult to achieve. Using trimethoxyborane or 2-isopropoxy pinacolboronic ester. Detailed mechanistic studies have been conducted to understand the mechanism behind the formation of boronic ester starting from organometallic reagents.
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Affiliation(s)
- Swagata Paul
- Indian Institute of Technology, Kharagpur, 721302, India
| | - Santanu Panda
- Indian Institute of Technology, Kharagpur, 721302, India
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4
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Seidler G, Schwenzer M, Clausen F, Daniliuc CG, Studer A. Borylative transition metal-free couplings of vinyl iodides with various nucleophiles, alkenes or alkynes. Chem Sci 2024; 15:1672-1678. [PMID: 38303934 PMCID: PMC10829001 DOI: 10.1039/d3sc06131k] [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: 11/15/2023] [Accepted: 12/28/2023] [Indexed: 02/03/2024] Open
Abstract
Alkyl boronic esters are highly valuable compounds in organic chemistry and related fields due to their good stability and highly versatile reactivity. In this edge article, stereoselective borylative couplings of vinyl iodides with various nucleophiles, alkenes or alkynes is reported. These coupling reactions proceed through stereospecific hydroboration and subsequent stereospecific 1,2-metallate rearrangement. The cascades utilize readily available reagents and proceed without the need of a transition metal catalyst.
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Affiliation(s)
- Gesa Seidler
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Munster Germany
| | - Max Schwenzer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Munster Germany
| | - Florian Clausen
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Munster Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Munster Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Munster Germany
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5
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Youn JH, Go SY, Chung H, Lee H, Chung TD, Cheong PHY, Lee HG. Dual Function of N-Iodosuccinimide for C(sp 3)-B Bond Activation. Org Lett 2024; 26:198-203. [PMID: 38153405 DOI: 10.1021/acs.orglett.3c03728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
A practical method for C(sp3)-B bond activation was developed. Using a combination of alkyl trifluoroborates and N-iodosuccinimide (NIS), various C(sp3)-heteroatom bonds were readily generated in an efficient manner. Mechanistic studies revealed the bifunctional ability of NIS: mediating the formation of reactive halogenated intermediates and activating them via halogen bonding. This electrophilic activation of the reaction center enables the utilization of general heteroatom nucleophiles, which are used in a limited capacity in traditional 1,2-metalate rearrangements.
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Affiliation(s)
- Ju Hyun Youn
- Department of Chemistry, College of Natural Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Su Yong Go
- Department of Chemistry, College of Natural Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyunho Chung
- Department of Chemistry, College of Natural Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Haeyeon Lee
- Department of Chemistry, College of Natural Science, Seoul National University, Seoul 08826, Republic of Korea
| | - Taek Dong Chung
- Department of Chemistry, College of Natural Science, Seoul National University, Seoul 08826, Republic of Korea
- Advanced Institutes of Convergence Technology, Suwon-si, Gyeonggi-do 16229, Republic of Korea
| | - Paul Ha-Yeon Cheong
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Hong Geun Lee
- Department of Chemistry, College of Natural Science, Seoul National University, Seoul 08826, Republic of Korea
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6
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Ahmed EAMA, Zhang H, Cao WG, Gong TJ. Palladium-Catalyzed Cross-Coupling of gem-Difluorocyclopropanes with gem-Diborylalkanes for the Synthesis of Boryl-Substituted Fluorinated Alkenes. Org Lett 2023; 25:9020-9024. [PMID: 38063840 DOI: 10.1021/acs.orglett.3c03626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
This study presents a novel method for the regioselective coupling of gem-difluorinated cyclopropanes with gem-diborylmethane, utilizing a Pd-catalyst system. This innovative approach enables the synthesis of 2-fluoroalkenyl monoboronate scaffolds with high Z-selectivity. The resulting products undergo further transformations, including oxidation, Suzuki cross-coupling, and trifluoroborylation, all of which are achieved with good yields. This work introduces a valuable synthetic pathway to access important fluorinated compounds for various applications in organic chemistry.
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Affiliation(s)
| | - Hongchen Zhang
- College of pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Wen-Gen Cao
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Tian-Jun Gong
- Hefei National Research Center for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy University of Science and Technology of China, Hefei 230026, People's Republic of China
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7
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Ghorai D, Das KK, Panda S. Carbonyl group directed synthesis of 3-boryl-3-substituted alkenyl oxindoles and tetrasubstituted β-borylenones. Chem Commun (Camb) 2023; 59:14447-14450. [PMID: 37982264 DOI: 10.1039/d3cc04788a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
Transition metal-free carbonyl directed boron-Wittig reaction of α-bis(boryl)carbanions with the corresponding isatins or with the α-keto esters/amides was achieved to access alkenyl oxindoles in good yield and high stereoselectivity.
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Affiliation(s)
- Debraj Ghorai
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India.
| | - Kanak Kanti Das
- 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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8
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Vincent CA, Chiriac MI, Troian-Gautier L, Tambar UK. Photocatalytic Sulfonyl Fluorination of Alkyl Organoboron Substrates. ACS Catal 2023; 13:3668-3675. [PMID: 37124721 PMCID: PMC10135442 DOI: 10.1021/acscatal.3c00107] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
Sulfonyl fluorides are highly versatile molecules for click chemistry that have found applications in many areas of chemistry and biology. Recent chemical approaches have focused on the synthesis of alkyl sulfonyl fluorides from readily available starting materials. Here, we report a photocatalytic synthesis of alkyl sulfonyl fluorides from organotrifluoroborates and boronic acid pinacol esters, which are building blocks commonly employed by medicinal chemists in the synthesis of bioactive molecules. Steady-state and time-resolved spectroscopy have confirmed that the absorption of photons by the acridinium catalysts leads to the oxidation of the organotrifluoroborate substrates. The reaction exhibits broad functional group tolerance, which can be attributed to the mild activation with visible light. Importantly, this general approach provides easy access to primary, secondary, and tertiary alkyl sulfonyl fluorides.
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Affiliation(s)
- Cooper A Vincent
- Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, Texas 75390-9038, United States
| | - Maria Irina Chiriac
- Department of Discovery Chemistry, Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Ludovic Troian-Gautier
- Molecular Chemistry, Materials and Catalysis (MOST), Université catholique de Louvain (UCLouvain), Institut de la Matierè Condensée et des Nanosciences (IMCN), 1348 Louvain-la-Neuve, Belgium
| | - Uttam K Tambar
- Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, Texas 75390-9038, United States
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9
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Sarkar N, Kumar Sahoo R, Nembenna S. Aluminium-Catalyzed Selective Hydroboration of Esters and Epoxides to Alcohols: C-O Bond Activation. Chemistry 2023; 29:e202203023. [PMID: 36226774 DOI: 10.1002/chem.202203023] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Indexed: 11/07/2022]
Abstract
In this work, the molecular aluminium dihydride complex bearing an N, N'-chelated conjugated bis-guanidinate (CBG) ligand is used as a catalyst for reducing a wide range of aryl and alkyl esters with good tolerance of alkene (C=C), alkyne (C≡C), halides (Cl, Br, I and F), nitrile (C≡N), and nitro (NO2 ) functionalities. Further, we investigated the catalytic application of aluminium dihydride in the C-O bond cleavage of alkyl and aryl epoxides into corresponding branched Markovnikov ring-opening products. In addition, the chemoselective intermolecular reduction of esters over other reducible functional groups, such as amides and alkenes, has been established. Intermediates are isolated and characterized by NMR and HRMS studies, which confirm the probable catalytic cycles for the hydroboration of esters and epoxides.
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Affiliation(s)
- Nabin Sarkar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
| | - Rajata Kumar Sahoo
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
| | - Sharanappa Nembenna
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Bhubaneswar, 752050, India
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10
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Baird SR, Vogels CM, Geier SJ, Watanabe LK, Binder JF, Macdonald CLB, Westcott SA. The phosphinoboration of thiosemicarbazones. CAN J CHEM 2022. [DOI: 10.1139/cjc-2022-0088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This study reports on the exploration of the phosphinoboration reaction with several thiosemicarbazones (R5R4NC(S)NR3N=CR1R2). Reactions between either Ph2PBpin (pin = 1,2-O2C2Me4) or Ph2PBcat (cat = 1,2-O2C6H4) with thiosemicarbazones containing a terminal primary or secondary amine afforded boron-containing heterocyclic 1,3,4-thiadiazoline products in excellent yield. The addition of Ph2PBpin to thiosemicarbazones containing an NMe2 group in the terminal position generated novel five-membered heterocycles in moderate yield, which included boron, sulfur, and nitrogen atoms. Heterocyclization of the thiosemicarbazones occurs preferentially in the presence of functional groups such as acetyl and pyridyl groups.
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Affiliation(s)
- Samuel R. Baird
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Stephen J. Geier
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Lara K. Watanabe
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada
| | - Justin F. Binder
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada
| | | | - Stephen A. Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
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11
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Sarkar S, Wagulde S, Jia X, Gevorgyan V. General and Selective Metal-Free Radical α-C-H Borylation of Aliphatic Amines. Chem 2022; 8:3096-3108. [PMID: 36571075 PMCID: PMC9784107 DOI: 10.1016/j.chempr.2022.07.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Despite recent developments, selective C(sp3)-H borylation of feedstock amines remains a formidable challenge. Herein, we have developed a general, mild, and photoinduced transition metal- and strong base-free method for α-C(sp3)-H borylation of amines. This protocol features a regioselective 1,5-hydrogen atom transfer process to access key α-aminoalkyl radical intermediate using commercially available easy-to-install/remove iodobenzoyl radical translocating group. Remarkably, this general, efficient, and operationally simple method allows activation of primary and secondary α-C-H sites of a broad range of acyclic and cyclic amines toward highly regio- and diastereoselective synthesis of valuable α-aminoboronates. Utility of this protocol has been demonstrated by its employment in late-stage borylation of structurally complex amines and formal C-H arylation reaction of amines. Thus, it is expected that this operationally simple, general, and practical method will find broad application in organic synthesis and drug discovery.
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Affiliation(s)
- Sumon Sarkar
- Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 West Campbell Road, BSB 13, Richardson, Texas, 75080 (USA)
| | - Sidhant Wagulde
- Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 West Campbell Road, BSB 13, Richardson, Texas, 75080 (USA)
| | - Xiangqing Jia
- Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 West Campbell Road, BSB 13, Richardson, Texas, 75080 (USA)
| | - Vladimir Gevorgyan
- Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 West Campbell Road, BSB 13, Richardson, Texas, 75080 (USA)
- Lead contact
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12
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Hazra S, Mahato S, Kanti Das K, Panda S. Transition-Metal-Free Heterocyclic Carbon-Boron Bond Formation. Chemistry 2022; 28:e202200556. [PMID: 35438817 DOI: 10.1002/chem.202200556] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Indexed: 12/16/2022]
Abstract
Heteroaryl boronic acids and esters are extremely important and valuable intermediates because of their wide application in the synthesis of marketed drugs and bioactive compounds. Over the last couple of decades, the construction of highly important heteroaryl carbon-boron bonds has created huge attention. The transition-metal-free protocols are more green, less sensitive to air and moisture, and also economically advantageous over the transition-metal-based protocols. The transition-metal-free C-H borylation of heteroarenes and C-X (X=halogen) borylation of heteroaryl halides represents an excellent approach for their synthesis. Also, various cyclization and alkyne activation protocols have been recently established for their synthesis. The goal of this review article is to summarize the existing literature and the current state of the art for transition-metal-free synthesis of heteroaryl boronic acid and esters.
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Affiliation(s)
- Subrata Hazra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Somenath Mahato
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Kanak Kanti Das
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Santanu Panda
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
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13
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Mahato S, Nandy S, Das KK, Panda S. Zirconium Promoted Synthetic Transformations of Organoboron Compounds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Somenath Mahato
- IIT Kharagpur: Indian Institute of Technology Kharagpur chemistry INDIA
| | - Soumilee Nandy
- IIT Kharagpur: Indian Institute of Technology Kharagpur chemistry INDIA
| | - Kanak Kanti Das
- IIT Kharagpur: Indian Institute of Technology Kharagpur chemistry INDIA
| | - Santanu Panda
- Indian Institute of Technology Kharagpur Department of Chemistry Chemistry IIT Kharagpur, Organic chemistry building, OC-207Near Rubber technology department 721302 Kharagpur INDIA
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14
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Go SY, Chung H, Shin SJ, An S, Youn JH, Im TY, Kim JY, Chung TD, Lee HG. A Unified Synthetic Strategy to Introduce Heteroatoms via Electrochemical Functionalization of Alkyl Organoboron Reagents. J Am Chem Soc 2022; 144:9149-9160. [PMID: 35575552 DOI: 10.1021/jacs.2c03213] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Based on systematic electrochemical analysis, an integrated synthetic platform of C(sp3)-based organoboron compounds was established for the introduction of heteroatoms. The electrochemically mediated bond-forming strategy was shown to be highly effective for the functionalization of sp3-hybridized carbon atoms with significant steric hindrance. Moreover, virtually all the nonmetallic heteroatoms could be utilized as reaction partners using one unified protocol. The observed reactivity stems from the two consecutive single-electron oxidations of the substrate, which eventually generates an extremely reactive carbocation as the key intermediate. The detailed reaction profile could be elucidated through multifaceted electrochemical studies. Ultimately, a new dimension in the activation strategies for organoboron compounds was accomplished through the electrochemically driven reaction development.
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Affiliation(s)
- Su Yong Go
- Department of Chemistry, College of Natural Science, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Hyunho Chung
- Department of Chemistry, College of Natural Science, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Samuel Jaeho Shin
- Department of Chemistry, College of Natural Science, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Sohee An
- Department of Chemistry, College of Natural Science, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Ju Hyun Youn
- Department of Chemistry, College of Natural Science, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Tae Yeong Im
- Department of Chemistry, College of Natural Science, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Ji Yong Kim
- Department of Chemistry, College of Natural Science, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Taek Dong Chung
- Department of Chemistry, College of Natural Science, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea.,Advanced Institutes of Convergence Technology, Suwon-si, Gyeonggi-do 16229 Republic of Korea
| | - Hong Geun Lee
- Department of Chemistry, College of Natural Science, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
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15
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Ma X, Kuang Z, Song Q. Recent Advances in the Construction of Fluorinated Organoboron Compounds. JACS AU 2022; 2:261-279. [PMID: 35252978 PMCID: PMC8889561 DOI: 10.1021/jacsau.1c00129] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Indexed: 05/05/2023]
Abstract
Fluorinated organoboron compounds are important synthetic building blocks that combine the unique characteristics of a fluorinated motif with the versatile synthetic applications of organoboron moiety. This review article guides the research on fluorinated organoboron compounds mainly from four aspects in recent years: selective monodefluoroborylation of polyfluoroarenes and polyfluoroalkenes, selective borylation of fluorinated substrates, selective fluorination of organoboron compounds, and borofluorination of alkynes/olefins. In addition, this review will provide a necessary guidance and inspiration for the research on the valuable synthetic building block fluorinated organoboron compounds.
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Affiliation(s)
- Xingxing Ma
- Key
Laboratory of Molecule Synthesis and Function Discovery, Fujian Province
University, College of Chemistry at Fuzhou
University, Fuzhou, Fujian 350108, China
| | - Zhijie Kuang
- Institute
of Next Generation Matter Transformation, College of Materials Science
Engineering & Chemical Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
| | - Qiuling Song
- Key
Laboratory of Molecule Synthesis and Function Discovery, Fujian Province
University, College of Chemistry at Fuzhou
University, Fuzhou, Fujian 350108, China
- Institute
of Next Generation Matter Transformation, College of Materials Science
Engineering & Chemical Engineering, Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian 361021, China
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16
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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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17
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Kanti Das K, Kumar P, Ghorai D, Mondal B, Panda S. Organoboron Compounds Towards Asymmetric Pericyclic Reaction; Exploitation to Bioactive Molecule Synthesis. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kanak Kanti Das
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Parveen Kumar
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Debraj Ghorai
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Buddhadeb Mondal
- 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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18
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Grygorenko OO, Moskvina VS, Kleban I, Hryshchyk OV. Synthesis of saturated and partially saturated heterocyclic boronic derivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Paul S, Das KK, Aich D, Manna S, Panda S. Recent developments in the asymmetric synthesis and functionalization of symmetrical and unsymmetrical gem-diborylalkanes. Org Chem Front 2022. [DOI: 10.1039/d1qo01300a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
gem-Diborylalkanes are an important class of organoboron compounds as they function as a key building block in organic synthesis. This review summarizes recent developments of the enantioselective synthesis of gem-diborylalkanes and application in asymmetric synthesis.
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Affiliation(s)
- Swagata Paul
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Kanak Kanti Das
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Debasis Aich
- Department of Chemistry, Indian Institute of Technology, Kharagpur, 721302, India
| | - Samir Manna
- 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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20
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21
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Grygorenko OO, Volochnyuk DM, Vashchenko BV. Emerging Building Blocks for Medicinal Chemistry: Recent Synthetic Advances. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100857] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Oleksandr O. Grygorenko
- Enamine Ltd. Chervonotkatska 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
| | - Dmitriy M. Volochnyuk
- Enamine Ltd. Chervonotkatska 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
- Institute of Organic Chemistry National Academy of Sciences of Ukraine Murmanska Street 5 Kyiv 02094 Ukraine
| | - Bohdan V. Vashchenko
- Enamine Ltd. Chervonotkatska 78 Kyiv 02094 Ukraine
- Taras Shevchenko National University of Kyiv Volodymyrska Street 60 Kyiv 01601 Ukraine
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22
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Carbó JJ, Fernández E. Alkoxide activation of tetra-alkoxy diboron reagents in C-B bond formation: a decade of unpredictable reactivity. Chem Commun (Camb) 2021; 57:11935-11947. [PMID: 34704565 DOI: 10.1039/d1cc05123g] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Any attempt to facilitate a new generation of C-B bonds represents a useful tool in organic synthesis. In addition, if that approach highlights the nucleophilic character of boryl moieties in the absence of transition metal complexes, the challenge to create new reactive platforms becomes an opportunity. We have been deeply involved in the experimental and theoretical validation of C-B bond formation by means of alkoxide activation of tetra-alkoxy diboron reagents and here is presented a convenient guide to understand the concept and the applications.
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Affiliation(s)
- Jorge J Carbó
- Departament de Química Física i Inorgànica, Unversitat Rovira i Virgili (URV), 43007, Spain.
| | - Elena Fernández
- Departament de Química Física i Inorgànica, Unversitat Rovira i Virgili (URV), 43007, Spain.
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23
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Volochnyuk DM, Gorlova AO, Grygorenko OO. Saturated Boronic Acids, Boronates, and Trifluoroborates: An Update on Their Synthetic and Medicinal Chemistry. Chemistry 2021; 27:15277-15326. [PMID: 34499378 DOI: 10.1002/chem.202102108] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Indexed: 12/13/2022]
Abstract
This review discusses recent advances in the chemistry of saturated boronic acids, boronates, and trifluoroborates. Applications of the title compounds in the design of boron-containing drugs are surveyed, with special emphasis on α-amino boronic derivatives. A general overview of saturated boronic compounds as modern tools to construct C(sp3 )-C and C(sp3 )-heteroatom bonds is given, including recent developments in the Suzuki-Miyaura and Chan-Lam cross-couplings, single-electron-transfer processes including metallo- and organocatalytic photoredox reactions, and transformations of boron "ate" complexes. Finally, an attempt to summarize the current state of the art in the synthesis of saturated boronic acids, boronates, and trifluoroborates is made, with a brief mention of the "classical" methods (transmetallation of organolithium/magnesium reagents with boron species, anti-Markovnikov hydroboration of alkenes, and the modification of alkenyl boron compounds) and a special focus on recent methodologies (boronation of alkyl (pseudo)halides, derivatives of carboxylic acids, alcohols, and primary amines, boronative C-H activation, novel approaches to alkene hydroboration, and 1,2-metallate-type rearrangements).
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Affiliation(s)
- Dmitriy M Volochnyuk
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv, 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv, 01601, Ukraine.,Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv, 02094, Ukraine
| | - Alina O Gorlova
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv, 02094, Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd. (www.enamine.net), Chervonotkatska 78, Kyiv, 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv, 01601, Ukraine
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24
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Huang M, Hu J, Krummenacher I, Friedrich A, Braunschweig H, Westcott SA, Radius U, Marder TB. Base-Mediated Radical Borylation of Alkyl Sulfones. Chemistry 2021; 28:e202103866. [PMID: 34713940 PMCID: PMC9299846 DOI: 10.1002/chem.202103866] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Indexed: 11/06/2022]
Abstract
A practical and direct method was developed for the production of versatile alkylboronic esters via transition metal-free borylation of primary and secondary alkyl sulfones. The key to the success of the strategy is the use of bis(neopentyl glycolato) diboron (B 2 neop 2 ), with a stoichiometric amount of base as a promoter. The practicality and industrial potential of this protocol are highlighted by its wide functional group tolerance, the late-stage modification of complex compounds, no need for further transesterification, and operational simplicity. Radical clock, radical trap experiments, and EPR studies were conducted which show that the borylation process involves radical intermediates.
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Affiliation(s)
- Mingming Huang
- Julius-Maximilians-Universität Würzburg: Julius-Maximilians-Universitat Wurzburg, Institute for Inorganic Chemistry, GERMANY
| | - Jiefeng Hu
- Julius-Maximilians-Universität Würzburg, Institute for Inorganic Chemistry, GERMANY
| | - Ivo Krummenacher
- Julius-Maximilians-Universität Würzburg: Julius-Maximilians-Universitat Wurzburg, Institute For Inorganic Chemistry, GERMANY
| | - Alexandra Friedrich
- Julius-Maximilians-Universität Würzburg: Julius-Maximilians-Universitat Wurzburg, Institute for Inorganic Chemistry, GERMANY
| | - Holger Braunschweig
- Julius-Maximilians-Universität Würzburg: Julius-Maximilians-Universitat Wurzburg, Institute for Inorganic Chemistry, GERMANY
| | - Stephen A Westcott
- Mount Allison University, Department of Chemistry and Biochemistry, GERMANY
| | - Udo Radius
- Julius-Maximilians-Universität Würzburg: Julius-Maximilians-Universitat Wurzburg, Institute for Inorganic Chemistry, GERMANY
| | - Todd B Marder
- Julius-Maximilians-Universität Würzburg, Institut für Anorganische Chemie, Am Hubland, 97074, Würzburg, GERMANY
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25
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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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26
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Nandy S, Paul S, Das KK, Kumar P, Ghorai D, Panda S. Synthesis and reactivity of alkynyl boron compounds. Org Biomol Chem 2021; 19:7276-7297. [PMID: 34374405 DOI: 10.1039/d1ob00465d] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Over the last century, there have been considerable developments in organoboron chemistry due to the stability, non-toxicity, and easy commercial availability of various boronic esters. Several organoboron reagents have emerged and play an increasingly important role in everyday organic synthesis. Among them, alkynyl boron compounds have attracted significant attention due to their easy synthesis and diverse reactivity. In this review, we summarize the advancement of research on alkynyl boron compounds, highlighting their importance in the synthesis of valuable compounds.
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Affiliation(s)
- Soumilee Nandy
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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27
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28
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Kanti Das K, Manna S, Panda S. Transition metal catalyzed asymmetric multicomponent reactions of unsaturated compounds using organoboron reagents. Chem Commun (Camb) 2021; 57:441-459. [PMID: 33350405 DOI: 10.1039/d0cc06460b] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Asymmetric multicomponent reactions allow stitching several functional groups in an enantioselective and atom economical manner. The introduction of boron-based reagents as a multicomponent coupling partner has its own merits. In addition to being non-toxic and highly stable, organoboron compounds can be easily converted to other functional groups in a stereoselective manner. In the last decade several transition metal catalyzed asymmetric multicomponent strategies have been evolved using boron based reagents. This review will discuss the merits and scope of multicomponent strategies based on their difference in the reaction mechanism and transition metals involved.
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Affiliation(s)
- Kanak Kanti Das
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India.
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