1
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Nakano Y, Lupton DW. One carbon-four new bonds. Science 2023; 379:439-440. [PMID: 36730389 DOI: 10.1126/science.adf2201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Stable carbenes deliver a carbon atom to simple amides, producing a range of cyclic compounds.
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Affiliation(s)
- Yuji Nakano
- School of Chemistry, Monash University, Melbourne, VIC, Australia
| | - David W Lupton
- School of Chemistry, Monash University, Melbourne, VIC, Australia
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2
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Wang L, Zhao N, Bai Y, Liu Y, Xiao S, Wang J. Sequential Nucleophilic Addition and Regioselective Ring‐Expansion Reactions of α‐Diazophosphonates with Isatins:Access to 4‐Phosphonylated‐3‐hydroxyquinolin‐2(1H)‐ones. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200069] [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)
- Lei Wang
- Institute of Medicinal Plant Development Department of Natural Medicine Chemistry Research Center Chinese Academy of Medical Science and Peking Union Medical College 100193 Beijing CHINA
| | - Nannan Zhao
- Dalian Polytechnic University School of Biological Engineering CHINA
| | - Yan Bai
- Zhejiang Agriculture and Forestry University: Zhejiang A and F University College of Food and Health CHINA
| | - Yujia Liu
- Dalian Polytechnic University School of Biological Engineering CHINA
| | - Shan Xiao
- Dongguan University of Technology School of Nutrition and Health CHINA
| | - Jihui Wang
- Dongguan University of Technology School of Nutrition and Health CHINA
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3
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Cynometra cauliflora L.: An indigenous tropical fruit tree in Malaysia bearing essential oils and their biological activities. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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4
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Kotha S, Cheekatla SR, Meshram M. Design and Synthesis of Cage Molecules as High Energy Density Materials for Aerospace Applications. ChemCatChem 2020. [DOI: 10.1002/cctc.202001475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Subba Rao Cheekatla
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400 076 India
| | - Milind Meshram
- Department of Chemistry The K.R.T. Arts B.H. Commerce & A.M. Science College Nashik 422 002 India
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5
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M. Correia JT, A. Fernandes V, Matsuo BT, C. Delgado JA, de Souza WC, Paixão MW. Photoinduced deaminative strategies: Katritzky salts as alkyl radical precursors. Chem Commun (Camb) 2020; 56:503-514. [DOI: 10.1039/c9cc08348k] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Primary amines are one of the most predominant functional groups found in organic molecules. This review covers the most recent developments on photocatalytic deaminative strategies by using Katritzky Salts as alkyl radical reservoirs.
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Affiliation(s)
- José Tiago M. Correia
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem)
- Department of Chemistry
- Federal University of São Carlos – UFSCar
- São Paulo
- Brazil
| | - Vitor A. Fernandes
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem)
- Department of Chemistry
- Federal University of São Carlos – UFSCar
- São Paulo
- Brazil
| | - Bianca T. Matsuo
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem)
- Department of Chemistry
- Federal University of São Carlos – UFSCar
- São Paulo
- Brazil
| | - José A. C. Delgado
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem)
- Department of Chemistry
- Federal University of São Carlos – UFSCar
- São Paulo
- Brazil
| | - Wanderson C. de Souza
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem)
- Department of Chemistry
- Federal University of São Carlos – UFSCar
- São Paulo
- Brazil
| | - Márcio Weber Paixão
- Centre of Excellence for Research in Sustainable Chemistry (CERSusChem)
- Department of Chemistry
- Federal University of São Carlos – UFSCar
- São Paulo
- Brazil
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6
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Dai Z, Li S, Li Y, Feng L, Ma C. Metal-free synthesis of benzimidazo[1,2-c]quinazolin-6-ones with indole and benzenediamine oxidized by I2/TBHP. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.02.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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7
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Li Z, Lam SM, Ip I, Wong WT, Chiu P. Rearrangements of α-Diazo-β-hydroxyketones for the Synthesis of Bicyclo[m.n.1]alkanones. Org Lett 2017; 19:4464-4467. [DOI: 10.1021/acs.orglett.7b01963] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhengning Li
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Shuk Mei Lam
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Ignatius Ip
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Wing-tak Wong
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Pauline Chiu
- Department of Chemistry and
State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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8
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Kotha S, Rao Cheekatla S, Mandal B. Synthesis and Rearrangement of Cage [4.3.2]Propellanes that Contain a Spiro Linkage. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700617] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry; Indian Institute of Technology-Bombay; Powai India
| | | | - Binita Mandal
- Department of Chemistry; Indian Institute of Technology-Bombay; Powai India
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9
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Candeias NR, Paterna R, Gois PMP. Homologation Reaction of Ketones with Diazo Compounds. Chem Rev 2016; 116:2937-81. [DOI: 10.1021/acs.chemrev.5b00381] [Citation(s) in RCA: 201] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Nuno R. Candeias
- Department
of Chemistry and Bioengineering, Tampere University of Technology, Korkeakoulunkatu 8, Tampere, FI-33101 Finland
| | - Roberta Paterna
- Research
Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidad of Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Pedro M. P. Gois
- Research
Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidad of Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
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10
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Nagatomo M, Hagiwara K, Masuda K, Koshimizu M, Kawamata T, Matsui Y, Urabe D, Inoue M. Symmetry-Driven Strategy for the Assembly of the Core Tetracycle of (+)-Ryanodine: Synthetic Utility of a Cobalt-Catalyzed Olefin Oxidation and α-Alkoxy Bridgehead Radical Reaction. Chemistry 2015; 22:222-9. [DOI: 10.1002/chem.201503640] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Indexed: 11/09/2022]
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11
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Christmann M, Hu J, Kitamura M, Stoltz B. Tetrahedron reports on organic chemistry. Tetrahedron 2015. [DOI: 10.1016/s0040-4020(15)00744-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Rao GHM, Khan FA. A Solvent Effect in the Reaction of Diazomethane with Norbornane-2,3-dione 3-Hemiketals. SYNTHETIC COMMUN 2014. [DOI: 10.1080/00397911.2014.926554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Pace V, Castoldi L, Holzer W. Chemoselective Additions of Chloromethyllithium Carbenoid to Cyclic Enones: A Direct Access to Chloromethyl Allylic Alcohols. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301042] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Abstract
Over the past few decades, the semipinacol rearrangement has been widely applied in the field of organic synthesis. However, its catalytic asymmetric version has not caught much attention until the beginning of the 21st century. Significant breakthroughs have been made due to the efforts of organic chemists. These important progressions are summarized in this paper.
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Affiliation(s)
- Shao-Hua Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P R China
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15
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2013. [DOI: 10.1016/s0040-4020(13)01252-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Tabuchi T, Urabe D, Inoue M. Asymmetric synthesis of a highly functionalized bicyclo[3.2.2]nonene derivative. Beilstein J Org Chem 2013; 9:655-63. [PMID: 23616810 PMCID: PMC3629056 DOI: 10.3762/bjoc.9.74] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 03/14/2013] [Indexed: 11/23/2022] Open
Abstract
The stereoselective Diels–Alder reaction between an optically active 1,4-dimethylcycloheptadiene and acrolein was effectively promoted by TBSOTf to produce a bicyclo[3.2.2]nonene derivative bearing two quaternary carbons. Seven additional transformations from the obtained bicycle delivered the C2-symmetric bicyclo[3.3.2]decene derivative, a key intermediate in our synthetic study of ryanodine.
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Affiliation(s)
- Toshiki Tabuchi
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 133-0033 Japan
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17
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Lohoelter C, Schollmeyer D, Waldvogel SR. Derivatives of (-)-Isosteviol with Expanded Ring D and Various Oxygen Functionalities. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200970] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Liu H, Sun C, Lee NK, Henry RF, Lee D. New Methylene Homologation Method for Cyclic Ketones. Chemistry 2012; 18:11889-93. [DOI: 10.1002/chem.201201346] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Indexed: 11/07/2022]
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19
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Arimitsu K, Nomura S, Iwasaki H, Ozeki M, Yamashita M. First total synthesis of (±)-adunctin B. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.10.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Song ZL, Fan CA, Tu YQ. Semipinacol Rearrangement in Natural Product Synthesis. Chem Rev 2011; 111:7523-56. [PMID: 21851053 DOI: 10.1021/cr200055g] [Citation(s) in RCA: 385] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Zhen-Lei Song
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Chun-An Fan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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21
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Satoh T, Kashiwamura G, Nagamoto S, Sasaki Y, Sugiyama S. Insertion of cyclopropanes between a carbonyl carbon and an α-carbon of carbonyl compounds with cyclopropylmagnesium carbenoids. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.06.069] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2011. [DOI: 10.1016/s0040-4020(11)00770-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Satoh T, Awata Y, Kato Y, Ogata S, Ishigaki M, Sugiyama S, Saitoh H. Synthesis, including asymmetric synthesis, of 1-substituted cyclopentenes from cyclobutanones with one-carbon ring-expansion by 1,2-carbon-carbon insertion of magnesium carbenoids. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.12.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2010. [DOI: 10.1016/s0040-4020(10)01735-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Roman BI, Kimpe ND, Stevens CV. Synthesis of β-, γ-, δ-, ..., ω-Halogenated Ketones and Aldehydes. Chem Rev 2010; 110:5914-88. [DOI: 10.1021/cr900409h] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bart I. Roman
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Gent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Norbert De Kimpe
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Gent University, Coupure Links 653, B-9000 Gent, Belgium
| | - Christian V. Stevens
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Gent University, Coupure Links 653, B-9000 Gent, Belgium
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26
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Itoh S, Yamataka H. Reaction pathway of aliphatic pinacol-type rearrangement reexamined. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1664] [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]
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27
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Hashimoto T, Naganawa Y, Maruoka K. Stereoselective Construction of Seven-Membered Rings with an All-Carbon Quaternary Center by Direct Tiffeneau−Demjanov-type Ring Expansion. J Am Chem Soc 2009; 131:6614-7. [DOI: 10.1021/ja900941k] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuya Hashimoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Yuki Naganawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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28
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29
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Moebius DC, Kingsbury JS. Catalytic Homologation of Cycloalkanones with Substituted Diazomethanes. Mild and Efficient Single-Step Access to α-Tertiary and α-Quaternary Carbonyl Compounds. J Am Chem Soc 2009; 131:878-9. [DOI: 10.1021/ja809220j] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David C. Moebius
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
| | - Jason S. Kingsbury
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
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30
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Tanaka S, Anai T, Tadokoro M, Satoh T. One-carbon homologation of unsymmetrical ketones through magnesium β-oxido carbenoid rearrangement and trapping the enolate intermediates with electrophiles. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.05.079] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Tetrahedron reports on organic chemistry. Tetrahedron 2008. [DOI: 10.1016/s0040-4020(08)00897-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Erden I, Cao W, Price M, Colton M. A three-carbon (n+1+2) ring expansion method for the synthesis of macrocyclic enones. Application to muscone synthesis. Tetrahedron 2008; 64:5497-5501. [PMID: 18560472 DOI: 10.1016/j.tet.2008.03.109] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The three-carbon ring expansion methodology commences with the preparation of a cyclic allene (C9, C11, C13), readily available from the corresponding cycloalkene via dibromocarbene addition and subsequent treatment with methyllithium. Dichloroketene addition to the cyclic allene regioselectively provides the [2+2] cycloadduct which is reductively dechlorinated with zinc in methanol. The resulting cyclobutanone is then catalytically hydrogenated; cyclobutanone ring opening is affected with trimethylsilyl iodide; immediate dehydroiodination of the resulting beta-iodocycloalkanone with diazabicycloundecane (DBU) provides the corresponding macrocyclic enone. The 15-membered enone was converted to dl,-muscone with (CH(3))(2)CuLi.
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Affiliation(s)
- Ihsan Erden
- San Francisco State University, Department of Chemistry and Biochemistry, 1600 Holloway Avenue, San Francisco, CA 94132, USA
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33
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Tomilov YV, Dokitchev VA, Dzhemilev UM, Nefedov OM. Catalytic decomposition of diazomethane as a general method for the methylenation of chemical compounds. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1993v062n09abeh000048] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Tetrahedron reports on organic chemistry. Tetrahedron 2007. [DOI: 10.1016/s0040-4020(07)01371-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Tetrahedron reports on organic chemistry. Tetrahedron 2007. [DOI: 10.1016/s0040-4020(07)00834-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Khan FA, Rao GHM, Satapathy R, Parasuraman K. Serendipitously Discovered Diazomethane-Mediated Novel Molecular Rearrangements of Norbornyl α-Ketohemiketals. Org Lett 2007; 9:1581-4. [PMID: 17373805 DOI: 10.1021/ol070442g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Unprecedented molecular rearrangements during diazomethane-mediated reaction of norbornyl alpha-ketohemiketals leading to novel molecular entities are presented. A dramatic change in the reaction outcome was noted for five- and six-membered alpha-ketohemiketals: the former predominantly furnished rearranged bicyclic products involving migration of the gamma-alkoxy group, and the latter furnished the oxetane derivative as the major product. Interestingly, six-membered O-methyl-ketal yielded a product arising from the migration of the vicinal alkoxy group.
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Affiliation(s)
- Faiz Ahmed Khan
- Department of Chemistry, Indian Institute of Technology, Kanpur 208 016, India.
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37
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Tetrahedron reports on organic chemistry. Tetrahedron 2007. [DOI: 10.1016/s0040-4020(07)00205-0] [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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38
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Abstract
This tutorial review deals with recent advances in the chemistry and synthetic use of magnesium carbenoids. The reactivity of traditional carbenoids (alpha-haloalkyllithium species) was successfully reduced by using magnesium as the metal instead of lithium. Properties of these relatively stable carbenoids, magnesium carbenoids, were widely investigated and it was found that the magnesium carbenoids have very interesting reactivity toward several nucleophiles. The magnesium carbenoids, magnesium cyclopropylidenes, magnesium alkylidene carbenoids, and magnesium beta-oxido carbenoids are generated from alpha-chloroalkyl (or alpha-chloroalkenyl) aryl sulfoxides with a Grignard reagent at low temperature by sulfoxide-magnesium exchange reaction. The stability of the generated magnesium carbenoids and several new reactions based on the electrophilicity of the magnesium carbenoids, including 1,3-CH insertion, are reviewed. Magnesium carbenoids open up the new world of the chemistry of carbenoids.
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Affiliation(s)
- Tsuyoshi Satoh
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Ichigaya-funagawara-machi 12, Shinjuku-ku, Tokyo 162-0826, Japan.
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39
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Lectka T, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2006. [DOI: 10.1016/s0040-4020(06)01801-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Satoh T, Tanaka S, Asakawa N. One-carbon ring-expansion of 2-substituted cyclohexanones via lithium- and magnesium β-oxido carbenoid rearrangement: a new synthesis of 2,7-disubstituted and 2,2,7-trisubstituted cycloheptanones. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.07.082] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Lectka T, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2006. [DOI: 10.1016/s0040-4020(06)00771-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Khan FA, Satapathy R, Sudheer C, Rao CN. A new reaction of diazomethane with norbornyl α-diketones. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.08.087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Moffat D, Nichols CJ, Riley DA, Simpkins NS. The synthesis of bioactive indolocarbazoles related to K-252a. Org Biomol Chem 2005; 3:2953-75. [PMID: 16186927 DOI: 10.1039/b506444a] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A range of functionalised indolocarbazoles, related to the natural product K-252a, have been prepared, starting from a readily available bridged cyclopentene. Sequences of transformations, involving initial hydroboration-oxidation to give a ketone, or by dihydroxylation and cyclic sulfate formation, enable the preparation of diverse indolocarbazole products. Issues of imide nitrogen protection for the indolocarbazole, and opportunities for asymmetric desymmetrisation of key intermediates were also explored. A novel chiral lithium amide base mediated transformation of a cyclic sulfate intermediate gave the anticipated ketone product in up to 87% ee. A number of compounds, in the form of unprotected imide substituted indolocarbazoles, were screened for biological activity and were found to be potent inhibitors of a number of kinase enzymes.
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Affiliation(s)
- David Moffat
- Celltech Therapeutics Ltd, 216 Bath Road, Slough, SL1 4EN, UK
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Miyashita K, Satoh T. A new method for synthesis of α,α-disubstituted carbonyl compounds from carbonyl compounds with one-carbon homologation through β-oxido carbenoid rearrangement as the key reaction. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.03.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bernet B, Mäder T, Vasella A. Glyconothio-O-lactones. Part III. Thermolysis of a 4,5-Dihydro-1,2,3- and a 2,5-Dihydro-1,3,4-thiadiazole. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19970800422] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Satoh T, Miyashita K. A new synthesis of α,α-disubstituted carbonyl compounds from carbonyl compounds with one-carbon homologation. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.154] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Katritzky AR, Bobrov S, Kirichenko K, Ji Y. General and efficient insertion of carbons carrying benzotriazole. J Org Chem 2004; 69:303-8. [PMID: 14725440 DOI: 10.1021/jo035098p] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Anions formed from the lithiation of 1-(1-benzotriazolylalkyl)benzotriazoles (1, 6) and 1-(1-methylthioalkyl)benzotriazoles (10 and 10a) with n-BuLi underwent additions to cyclic and acyclic ketones giving intermediates 3a-f, 7b-f, and 11b-d, respectively, in excellent yields. Thermal rearrangements of intermediates 3a,b,d-f and 7b-d,f in the presence of zinc bromide provided one-carbon chain-extended or ring-expanded alpha-benzotriazolyl ketones 4a,b,d-f and 8b-d,f in moderate yields with excellent regioselectivity. By contrast, intermediates 11b-d on treatment with zinc bromide loose a molecule of benzotriazole followed by intramolecular cyclization of the resulting intermediates 12b-d to provide the 2,3- and 1,2,3-substituted indenes 13b-d in good yields.
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Affiliation(s)
- Alan R Katritzky
- Center for Heterocyclic Compounds, University of Florida, Department of Chemistry, Gainesville, Florida 32611-7200, USA.
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Berg U, Butkus E, Frejd T, Bromander S. Stereochemical studies of bicyclo[5.3.1]undecane-8,11-dione. Conformational analysis, enantiomer separation, CD-spectroscopy and enolization. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00196-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Benjamin LJ, Mander LN, Willis AC. Conversion of a gibberellin aldehyde into a 20-norkaurenoid lactone. Tetrahedron Lett 1996. [DOI: 10.1016/s0040-4039(96)02052-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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