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Nishikata T. α-Halocarbonyls as a Valuable Functionalized Tertiary Alkyl Source. ChemistryOpen 2024; 13:e202400108. [PMID: 38989712 DOI: 10.1002/open.202400108] [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: 04/03/2024] [Revised: 05/21/2024] [Indexed: 07/12/2024] Open
Abstract
This review introduces the synthetic organic chemical value of α-bromocarbonyl compounds with tertiary carbons. This α-bromocarbonyl compound with a tertiary carbon has been used primarily only as a radical initiator in atom transfer radical polymerization (ATRP) reactions. However, with the recent development of photo-radical reactions (around 2010), research on the use of α-bromocarbonyl compounds as tertiary alkyl radical precursors became popular (around 2012). As more examples were reported, α-bromocarbonyl compounds were studied not only as radicals but also for their applications in organometallic and ionic reactions. That is, α-bromocarbonyl compounds act as nucleophiles as well as electrophiles. The carbonyl group of α-bromocarbonyl compounds is also attractive because it allows the skeleton to be converted after the reaction, and it is being applied to total synthesis. In our survey until 2022, α-bromocarbonyl compounds can be used to perform a full range of reactions necessary for organic synthesis, including multi-component reactions, cross-coupling, substitution, cyclization, rearrangement, stereospecific reactions, asymmetric reactions. α-Bromocarbonyl compounds have created a new trend in tertiary alkylation, which until then had limited reaction patterns in organic synthesis. This review focuses on how α-bromocarbonyl compounds can be used in synthetic organic chemistry.
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Affiliation(s)
- Takashi Nishikata
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
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Bhat MF, Luján AP, Saifuddin M, Poelarends GJ. Chemoenzymatic Asymmetric Synthesis of Complex Heterocycles: Dihydrobenzoxazinones and Dihydroquinoxalinones. ACS Catal 2022; 12:11421-11427. [PMID: 36158903 PMCID: PMC9486952 DOI: 10.1021/acscatal.2c03008] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/25/2022] [Indexed: 01/08/2023]
Affiliation(s)
- Mohammad Faizan Bhat
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Alejandro Prats Luján
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Mohammad Saifuddin
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Gerrit J. Poelarends
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
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Sahu S, Karan G, Roy L, Maji MS. An expeditious route to sterically encumbered nonproteinogenic α-amino acid precursors using allylboronic acids. Chem Sci 2022; 13:2355-2362. [PMID: 35310508 PMCID: PMC8864702 DOI: 10.1039/d1sc06259j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 01/24/2022] [Indexed: 11/21/2022] Open
Abstract
A diastereoselective allylation of N-tert-butane sulfinyl α-iminoesters using allylboronic acids is developed to obtain optically active non-proteinogenic α-amino acid precursors in good yields and diastereoselectivities. Gram-scale synthesis, broad tolerance of functional groups, excellent stereodivergence, post-synthetic modifications, and easy removal of the chiral auxiliary are some of the key highlights. The protocol is applicable to various amino acids and short peptides, resulting in the incorporation of these precursors at the N-terminal position. A diastereoselective allylation of N-tert-butane sulfinyl α-iminoesters using allylboronic acids is developed to obtain optically active non-proteinogenic α-amino acid precursors in good yield and diastereoselectivities.![]()
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Affiliation(s)
- Samrat Sahu
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Ganesh Karan
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai, IOC Odisha Campus Bhubaneswar Bhubaneswar 751013 India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur Kharagpur 721302 India
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Mora KE, Musa MA, Robinson TJ, Mylod G, Bowyer WJ. Solvent Effects on Heterogeneous Rate Constants for Indium Mediated Allylations. J Phys Chem A 2021; 125:2088-2094. [PMID: 33661629 DOI: 10.1021/acs.jpca.0c11457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Indium mediated allylation is a highly selective tool for synthetic chemists to create carbon-carbon bonds, but the first step, heterogeneous reaction of allyl halides at solid indium surfaces, is still poorly understood. For example, the nature of the solvent dramatically affects the rate of reaction, but solvent choice is often based on empirical experiments. Fundamental kinetic studies are the best way to study this effect, but the determination of heterogeneous rate constants is challenging. In an effort to better understand solvent effects, we use optical microscopy to determine heterogeneous rate constants for IMA in aqueous acetonitrile, methanol, ethanol, and 2-propanol. We fit the reaction rate data over a range of mass transport rates using only two adjustable parameters, the heterogeneous rate constant and the mass transport rate. The results emphasize the critical importance of water in determining the rate of reaction. Surprisingly, the polarity of the organic solvent in the mix does not have a major effect on the rate. It is hypothesized that the oxygen atom in water and alcohols is an especially effective Lewis base to stabilize the transition state and the organoindium intermediates, similar to the importance of the oxygen in ethers for the formation of Grignard reagents. This study again demonstrates the power of microscopy for the study of heterogeneous reactions.
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Affiliation(s)
- Kathryn E Mora
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Megan A Musa
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Troy J Robinson
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Gabriella Mylod
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
| | - Walter J Bowyer
- Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York 14456, United States
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Sudha AJ, Aslam NA, Sandhu A, Yasuda M, Baba A, Babu SA. Synthesis of β-cyanoalanine and enantiomerically enriched aspartate derivatives via the Zn- or In-mediated nucleophilic addition to α-imino esters. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131217] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yeung K, Talbot FJT, Howell GP, Pulis AP, Procter DJ. Copper-Catalyzed Borylative Multicomponent Synthesis of Quaternary α-Amino Esters. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04563] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Kay Yeung
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Fabien J. T. Talbot
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Gareth P. Howell
- Pharmaceutical Technology and Development, AstraZeneca, Silk Road Business Park, Macclesfield SK10 2NA, United Kingdom
| | - Alexander P. Pulis
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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Affiliation(s)
| | - Maryam Zirak
- Department
of Chemistry, Payame Noor University, Tehran 19395-3697, Iran
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Yun Soo Choi, Park S, Park YS. Stereoselective Substitution of Configurationally Labile α-Bromo Arylacetates with Amines and Azlactones byL-Threonine-Mediated Crystallization-Induced Dynamic Resolution. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600201] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Aslam NA, Babu SA, Rani S, Mahajan S, Solanki J, Yasuda M, Baba A. Diastereoselective Construction of 3-Aminooxindoles with Adjacent Stereocenters: Stereocontrolled Addition of γ-Substituted Allylindiums to Isatin Ketimines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500340] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Eftekhari-Sis B, Zirak M. Chemistry of α-oxoesters: a powerful tool for the synthesis of heterocycles. Chem Rev 2014; 115:151-264. [PMID: 25423283 DOI: 10.1021/cr5004216] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Aslam NA, Babu SA. Direct lactonization of α-amino γ,δ-unsaturated carboxylic acid esters via olefin activation: stereo- and regioselective production of homoserine lactone scaffolds having contiguous stereocenters. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Reddy C, Babu SA, Aslam NA. Indium-assisted aluminium-based stereoselective allylation of prostereogenic α,α-disubstituted cycloalkanones and imines. RSC Adv 2014. [DOI: 10.1039/c4ra04293j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Stereoselective allylation of prostereogenic cycloalkanone and imine systems using allylic halides, aluminium powder and a catalytic amount of InCl3 is reported.
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Affiliation(s)
- Chennakesava Reddy
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Mohali, India
| | | | - Nayyar Ahmad Aslam
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Mohali
- Mohali, India
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