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Suman P, Tomar K, Nishad CS, Banerjee B. Metal-free synthesis of carbamoylated dihydroquinolinones via cascade radical annulation of cinnamamides with oxamic acids. Org Biomol Chem 2024; 22:1821-1833. [PMID: 38332745 DOI: 10.1039/d3ob01856c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
We report a metal-free procedure for the sustainable synthesis of carbamoylated dihydroquinolinones via tandem addition-cyclization of carbamoyl radicals to cinnamamides. Readily accessible, non-toxic and inexpensive oxamic acids are used as carbamoyl radical precursors. This highly straightforward method provides a mild and environmentally friendly route showing good atom economy and excellent functional group tolerance to obtain diverse medicinally important carbamoylated dihydroquinolinones in one pot. The cascade cyclization is also modular and step-economical with a wide substrate scope and the products were obtained in good to excellent yields. Additionally, the tolerance to air and water, operational simplicity, low cost and scalability enhance the practical value of the proposed synthetic strategy. Preliminary mechanistic studies reveal that cheap and environment-friendly ammonium persulfate acts as a radical initiator in the cascade process and generates carbamoyl radicals from oxamic acids. The synthetic utility of this method is further demonstrated by late stage functionalization of drug molecules with good yields.
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Affiliation(s)
- Pallav Suman
- Department of Chemistry, Central University of Punjab, Bathinda-151401, India.
| | - Kirti Tomar
- Department of Chemistry, Central University of Punjab, Bathinda-151401, India.
| | | | - Biplab Banerjee
- Department of Chemistry, Central University of Punjab, Bathinda-151401, India.
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2
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Nishad CS, Suman P, Saha H, Banerjee B. Visible-Light-Induced Metal- and Photocatalyst-Free Radical Cascade Cyclization of Cinnamamides for Synthesis of Functionalized Dihydroquinolinones. J Org Chem 2023. [PMID: 37463356 DOI: 10.1021/acs.joc.3c00987] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Visible-light-promoted metal- and photocatalyst-free radical cascade cyclization of cinnamamides with α-oxocarboxylic acids is described for sustainable synthesis of diverse pharmaceutically important dihydroquinolinone scaffolds in one pot under mild conditions. The decarboxylative cascade cyclization proceeded efficiently at room temperature without the need for expensive photocatalysts such as Ir or Ru complexes, which indicates the practicability and environmentally benign nature of this protocol. Preliminary mechanistic studies reveal that the blue LED irradiation efficiently cleaves the I-O bond of the hypervalent iodine reagent PhI(O2CCOAr)2 formed through ligand exchange between iodobenzene diacetate and arylglyoxylic acid to initiate the cascade reaction. The synthetic value of this operationally simple and energy-efficient method is further demonstrated by late-stage functionalization of drug molecules in excellent yields.
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Affiliation(s)
| | - Pallav Suman
- Department of Chemistry, Central University of Punjab, Bathinda 151401, India
| | - Himadri Saha
- Department of Chemistry, Central University of Punjab, Bathinda 151401, India
| | - Biplab Banerjee
- Department of Chemistry, Central University of Punjab, Bathinda 151401, India
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Xiao D, Zhao X, Lei J, Zhu M, Xu L. Synthesis of [6-6-6] ABE tricyclic ring analogues of methyllycaconitine. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.03.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Xu SM, Chen JQ, Liu D, Bao Y, Liang YM, Xu PF. Aroyl chlorides as novel acyl radical precursors via visible-light photoredox catalysis. Org Chem Front 2017. [DOI: 10.1039/c7qo00012j] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Abundant and inexpensive aroyl chlorides have been employed for the first time as novel acyl radical precursors in visible-light photocatalysis.
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Affiliation(s)
- Shi-Ming Xu
- State Key Laboratory of Applied Organic Chemistry
- and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jian-Qiang Chen
- State Key Laboratory of Applied Organic Chemistry
- and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Dan Liu
- State Key Laboratory of Applied Organic Chemistry
- and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yun Bao
- State Key Laboratory of Applied Organic Chemistry
- and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry
- and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry
- and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
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Howard KT, Chisholm JD. Preparation and Applications of 4-Methoxybenzyl Esters in Organic Synthesis. ORG PREP PROCED INT 2016; 48:1-36. [PMID: 27546912 DOI: 10.1080/00304948.2016.1127096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Kyle T Howard
- Department of Chemistry, 1-014 Center for Science & Technology, Syracuse University, Syracuse, NY 13244, USA
| | - John D Chisholm
- Department of Chemistry, 1-014 Center for Science & Technology, Syracuse University, Syracuse, NY 13244, USA
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6
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Kolodziej I, Green JR. Vinylogous Nicholas reactions in the synthesis of bi- and tricyclic cycloheptynedicobalt complexes. Org Biomol Chem 2015; 13:10852-64. [DOI: 10.1039/c5ob01684c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Lewis acid mediated intramolecular Nicholas reactions of allylic acetate enyne-Co2(CO)6 complexes afford bicyclic- and tricyclic cycloheptenyne-Co2(CO)6 complexes.
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Affiliation(s)
- Izabela Kolodziej
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
| | - James R. Green
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
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7
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Cormier M, Jean A, Blanchet J, Rouden J, Maddaluno J, De Paolis M. Diastereoselective organocatalytic Mannich access to azacyclic system en route to lyconadin A. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Lyconadins A-C are important members of the Lycopodium alkaloid family with challenging structural features and interesting biological profile. Herein, various synthetic strategies and methods for their preparation are summarized with the focus on constructive bond formation and our efficient and divergent synthesis based on functional group pairing (FGP) strategy.
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Affiliation(s)
- Yang Yang
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Mingji Dai
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
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Yang Y, Haskins CW, Zhang W, Low PL, Dai M. Divergent total syntheses of lyconadins A and C. Angew Chem Int Ed Engl 2014; 53:3922-5. [PMID: 24596132 PMCID: PMC4113559 DOI: 10.1002/anie.201400416] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Indexed: 12/13/2022]
Abstract
Divergent and concise total syntheses of two lycopodium alkaloids, lyconadins A and C have been developed. The synthesis of lyconadin A, having potent neurotrophic activity, features an efficient one-pot ketal removal and formal aza-[4+2] cyclization to form the cagelike core structure. A tandem ketal removal/Mannich reaction was developed to build the tricyclic structure of lyconadin C. Both lyconadins A and C were synthesized from a pivotal intermediate.
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Affiliation(s)
- Yang Yang
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907 (USA), Homepage: http://www.chem.purdue.edu/dai/
| | - Christopher W. Haskins
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907 (USA), Homepage: http://www.chem.purdue.edu/dai/
| | - Wandi Zhang
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907 (USA), Homepage: http://www.chem.purdue.edu/dai/
| | - Pui Leng Low
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907 (USA), Homepage: http://www.chem.purdue.edu/dai/
| | - Mingji Dai
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907 (USA), Homepage: http://www.chem.purdue.edu/dai/
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Yang Y, Haskins CW, Zhang W, Low PL, Dai M. Divergent Total Syntheses of Lyconadins A and C. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400416] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Abstract
Kinetic data for intramolecular homolytic substitution reactions of a series of acyl and oxyacyl radicals are reported.
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Affiliation(s)
- Amber N. Hancock
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology
- Australia
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute
- The University of Melbourne
- , Australia
| | - Carl H. Schiesser
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology
- Australia
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute
- The University of Melbourne
- , Australia
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Loertscher BM, Zhang Y, Castle SL. Exploration of an epoxidation-ring-opening strategy for the synthesis of lyconadin A and discovery of an unexpected Payne rearrangement. Beilstein J Org Chem 2013; 9:1179-84. [PMID: 23843911 PMCID: PMC3701374 DOI: 10.3762/bjoc.9.132] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Accepted: 05/28/2013] [Indexed: 11/23/2022] Open
Abstract
In the context of synthetic efforts targeting the alkaloid lyconadin A, scalemic epoxide 25 was prepared by a highly stereoselective sequence involving a Myers alkylation and a Shi epoxidation. Ring-opening of this epoxide with a vinylcopper complex afforded alcohol 26 instead of the expected product 27. An unusual Lewis acid promoted Payne rearrangement of an α-trityloxy epoxide is proposed to account for this outcome.
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Affiliation(s)
- Brad M Loertscher
- Department of Chemistry and Biochemistry, Brigham Young University, C100 BNSN, Provo, UT, 84602, USA
| | - Yu Zhang
- Department of Chemistry and Biochemistry, Brigham Young University, C100 BNSN, Provo, UT, 84602, USA
| | - Steven L Castle
- Department of Chemistry and Biochemistry, Brigham Young University, C100 BNSN, Provo, UT, 84602, USA
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14
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Hancock AN, Schiesser CH. Guidelines for radical reactions: some thirty years on. Chem Commun (Camb) 2013; 49:9892-5. [DOI: 10.1039/c3cc43870h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Zaimoku H, Taniguchi T, Ishibashi H. Synthesis of the Core of Actinophyllic Acid Using a Transannular Acyl Radical Cyclization. Org Lett 2012; 14:1656-8. [DOI: 10.1021/ol300280s] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Hisaaki Zaimoku
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Tsuyoshi Taniguchi
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hiroyuki Ishibashi
- School of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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Recent applications of the (TMS)3SiH radical-based reagent. Molecules 2012; 17:527-55. [PMID: 22269866 PMCID: PMC6268903 DOI: 10.3390/molecules17010527] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 12/29/2011] [Accepted: 01/02/2012] [Indexed: 12/29/2022] Open
Abstract
This review article focuses on the recent applications of tris(trimethylsilyl)silane as a radical-based reagent in organic chemistry. Numerous examples of the successful use of (TMS)(3)SiH in radical reductions, hydrosilylation and consecutive radical reactions are given. The use of (TMS)(3)SiH allows reactions to be carried out under mild conditions with excellent yields of products and remarkable chemo-, regio-, and stereoselectivity. The strategic role of (TMS)(3)SiH in polymerization is underlined with emphasis on the photo-induced radical polymerization of olefins and photo-promoted cationic polymerization of epoxides.
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Yokoe H, Mitsuhashi C, Matsuoka Y, Yoshimura T, Yoshida M, Shishido K. Enantiocontrolled Total Syntheses of Breviones A, B, and C. J Am Chem Soc 2011; 133:8854-7. [DOI: 10.1021/ja202874d] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiromasa Yokoe
- Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima 770-8505, Japan
| | - Chika Mitsuhashi
- Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima 770-8505, Japan
| | - Yoko Matsuoka
- Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima 770-8505, Japan
| | - Tomoyuki Yoshimura
- Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima 770-8505, Japan
| | - Masahiro Yoshida
- Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima 770-8505, Japan
| | - Kozo Shishido
- Graduate School of Pharmaceutical Sciences, The University of Tokushima, 1-78-1 Sho-machi, Tokushima 770-8505, Japan
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Xia W, Shao Y, Gui W, Yang C. Efficient synthesis of polysubstituted isochromanones via a novel photochemical rearrangement. Chem Commun (Camb) 2011; 47:11098-100. [DOI: 10.1039/c1cc14269k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nishimura T, Unni AK, Yokoshima S, Fukuyama T. Concise total synthesis of (+)-lyconadin A. J Am Chem Soc 2010; 133:418-9. [PMID: 21155564 DOI: 10.1021/ja109516f] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The total synthesis of lyconadin A from (R)-5-methylcyclohex-2-enone was accomplished. Our synthesis features the facile construction of a highly fused tetracyclic compound through a combination of an aza-Prins reaction and an electrocyclic ring opening. Transformation of the bromoalkene moiety in the tetracycle could be achieved by either a vinylogous Pummerer rearrangement or the formation and subsequent isomerization of the nitrosoalkene to furnish an α,β-unsaturated ketone, from which the pyridone ring was constructed.
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Affiliation(s)
- Takuya Nishimura
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Zhang Y, Loertscher BM, Castle SL. An annulation method for the synthesis of alkyl-substituted 6-carbomethoxy-2-pyridones. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.06.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Total Synthesis of (+)-Lyconadin A and Related Compounds via Oxidative C−N Bond Formation. J Am Chem Soc 2009; 131:11187-94. [DOI: 10.1021/ja903868n] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Beshore DC, Smith AB. The lyconadins: enantioselective total syntheses of (+)-lyconadin A and (-)-lyconadin B. J Am Chem Soc 2008; 130:13778-89. [PMID: 18798629 PMCID: PMC2819465 DOI: 10.1021/ja804939r] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A full account of the enantioselective total syntheses of (+)-lyconadin A (1) and (-)-lyconadin B (2) is presented. Central to this venture was recognition and deployment of a key strategy-level intramolecular aldol/conjugate addition cascade that led, in a single operation, to two new carbon-carbon sigma-bonds, three new stereogenic centers, and two new rings, albeit with the incorrect stereogenicity at C(12) for the lyconadins. Correction of the C(12) stereogenicity was achieved via innovative use of a protonated intramolecular aminal. An aminoiodo olefin cyclization, in conjunction with alpha-pyridinone and 3,4-dihydropyridinone annulation protocols, permitted completion of the syntheses of (+)-lyconadin A (1) and (-)-lyconadin B (2), respectively.
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Affiliation(s)
| | - Amos B. Smith
- Department of Chemistry, Laboratory for Research on the Structure of Matter, and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104
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Chatgilialoglu C. (Me3Si)3SiH: Twenty Years After Its Discovery as a Radical-Based Reducing Agent. Chemistry 2008; 14:2310-20. [DOI: 10.1002/chem.200701415] [Citation(s) in RCA: 133] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Synthesis of nitrogen-containing heterocycles using exo- and endo-selective radical cyclizations onto enamides. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.01.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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26
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Prakash C, Mohanakrishnan AK. Synthesis of Angularly Fused Carbocycles via Tandem Radical Cyclization of α-Carbonyl Radicals. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700986] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Chatgilialoglu C, Timokhin VI. Silyl Radicals in Chemical Synthesis. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2008. [DOI: 10.1016/s0065-3055(08)00002-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Mandal SK, Roy SC. Titanocene(III) mediated radical cyclizations of epoxides for the synthesis of medium-sized cyclic ethers. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.08.072] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Affiliation(s)
- Douglas C Beshore
- Department of Chemistry, Laboratory for Research on the Structure of Matter, and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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