1
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Li Y, Paola E, Wang Z, Menard G, Zakarian A. Lithium Enolate with a Lithium-Alkyne Interaction in the Enantioselective Construction of Quaternary Carbon Centers: Concise Synthesis of (+)-Goniomitine. Angew Chem Int Ed Engl 2022; 61:e202209987. [PMID: 36251869 PMCID: PMC9798608 DOI: 10.1002/anie.202209987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Indexed: 11/09/2022]
Abstract
We report a method for direct enantioselective alkylation of 3-alkynoic and 2,3-alkendioic acids that form quaternary stereogenic centers, and application of this method to the total enantioselective synthesis of a complex alkaloid (+)-goniomitine. The methods were effective in the alkylation of both 3-alkynoic acids, 2,3-alkendioic acids substrates with a broad range of heterocyclic and functionalized alkyl group substituents. Accompanying crystallographic studies provide mechanistic insight into the structure of well-defined chiral aggregates, highlighting cation-π interactions between lithium and alkyne groups.
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Affiliation(s)
- Yang Li
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Elena Paola
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Zongheng Wang
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Gabriel Menard
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Armen Zakarian
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
- Center for Integrative Biology, Faculty of Sciences, Geroscience Center for Brain Health and Metabolism, Universidad Mayor, Santiago, Chile
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2
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Kato R, Saito H, Ikeuchi K, Suzuki T, Tanino K. Total Synthesis and Structural Revision of the 6,11-Epoxyisodaucane Natural Sesquiterpene Using an Anionic 8π Electrocyclic Reaction. Org Lett 2022; 24:7939-7943. [PMID: 36268969 DOI: 10.1021/acs.orglett.2c03068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new synthetic strategy that forms a seven-membered carbocycle using an anionic 8π electrocyclic reaction facilitated the first total synthesis of the 6,11-epoxyisodaucane natural sesquiterpene in 9.0% yield over 10 steps in the longest linear sequence. The misassigned proposed stereochemistry was corrected by the synthesis of both the proposed structure and its C6 epimer. In addition, the 5-7-fused ring system was concisely constructed by tandem decyanation/five-membered-ring formation from an epoxynitrile.
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Affiliation(s)
- Ranmaru Kato
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | - Hiroki Saito
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan
| | - Kazutada Ikeuchi
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Takahiro Suzuki
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Keiji Tanino
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan
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3
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Li Y, Paola E, Wang Z, Menard G, Zakarian A. Lithium Enolate with a Lithium‐Alkyne Interaction in the Enantioselective Construction of Quaternary Carbon Centers: Concise Synthesis of (+)‐Goniomitine. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yang Li
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Elena Paola
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Zongheng Wang
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Gabriel Menard
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Armen Zakarian
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
- Center for Integrative Biology Faculty of Sciences Geroscience Center for Brain Health and Metabolism Universidad Mayor Santiago Chile
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4
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Liu XL, Li L, Lin HZ, Deng JT, Zhang XZ, Peng JB. Copper-catalyzed 1,2-Borylacylation of 1,3-Enynes: synthesis of β-Alkynyl ketones. Chem Commun (Camb) 2022; 58:5968-5971. [PMID: 35475443 DOI: 10.1039/d2cc01732f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper catalyzed 1,2-borylacylation of 1,3-enynes with B2pin2 and acid chlorides has been developed. Using readily available 1,3-enynes, B2pin2 and acid chlorides as substrates, a range of highly functionalized α,α-disubstituted β-alkynyl ketones were readily prepared under mild conditions in moderate to good yields. The borylacylated products can be easily derivatized to give several valuable structures. Notably, treatment of the products with NaBO3·4H2O provided 1,2-allenyl ketones, which is proposed to proceed via a retro-aldol process of the corresponding homopropargyl alcohols.
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Affiliation(s)
- Xin-Lian Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China.
| | - Lin Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China.
| | - Han-Ze Lin
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China.
| | - Jing-Tong Deng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China.
| | - Xiang-Zhi Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China.
| | - Jin-Bao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China.
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5
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Vaishanv NK, Zaheer MK, Kumar S, Kant R, Mohanan K. Base-Mediated Intramolecular Cyclization of α-Nitroethylallenic Esters as a Synthetic Route to 5-Hydroxy-3-pyrrolin-2-ones. J Org Chem 2021; 86:5630-5638. [PMID: 33788567 DOI: 10.1021/acs.joc.1c00109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An unprecedented Cs2CO3-mediated intramolecular cyclization/rearrangement cascade that transforms α-nitroethylallenic esters to functionalized pyrrolin-2-ones has been uncovered. This reaction provides a new and practical approach for the synthesis of medicinally privileged 5-hydroxy-3-pyrrolin-2-ones under mild conditions. The broad potential of this new method was demonstrated by an efficient Au/Ag-catalyzed heteroarylation of 5-hydroxy-3-pyrrolin-2-ones employing electron-rich heteroarenes to furnish heteroaryl-lactam derivatives.
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Affiliation(s)
- Narendra Kumar Vaishanv
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Mohd Khalid Zaheer
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Sandeep Kumar
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India.,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
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6
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Králová P, Maloň M, Pospíšil J, Soural M. Rearrangement of Threonine- and Serine-Based N-(3-Phenylprop-2-yn-1-yl) Sulfonamides Yields Chiral Pyrrolidin-3-ones. J Org Chem 2019; 85:985-993. [DOI: 10.1021/acs.joc.9b02932] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Petra Králová
- Department of Organic Chemistry, Faculty of Science, Palacký University, Tr. 17 Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Michal Maloň
- JEOL (United Kingdom) Limited, JEOL House, Silver Court, Watchmead, Welwyn Garden City, AL7 1LT Hertfordshire, United Kingdom
| | - Jiří Pospíšil
- Department of Organic Chemistry, Faculty of Science, Palacký University, Tr. 17 Listopadu 12, 771 46 Olomouc, Czech Republic
- Laboratory of Growth Regulators, The Czech Academy of Sciences, Institute of Experimental Botany & Palacký University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Miroslav Soural
- Department of Organic Chemistry, Faculty of Science, Palacký University, Tr. 17 Listopadu 12, 771 46 Olomouc, Czech Republic
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 5, 779 00 Olomouc, Czech Republic
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7
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Zhang QQ, Chen SY, Lin E, Wang H, Li Q. Regio- and Stereoselective Alkenylation of Allenoates with gem-Difluoroalkenes: Facile Access to Fluorinated 1,4-Enynes Bearing an All-Carbon Quaternary Center. Org Lett 2019; 21:3123-3126. [DOI: 10.1021/acs.orglett.9b00775] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qi-Qi Zhang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Shi-Yong Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - E Lin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Honggen Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Qingjiang Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
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8
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Vaishanv NK, Gupta AK, Kant R, Mohanan K. Fluoride-Mediated α-Selective 1,6-Conjugate Addition of Allenic Esters to p-Quinone Methides. J Org Chem 2018; 83:8759-8767. [DOI: 10.1021/acs.joc.8b01074] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Ashis Kumar Gupta
- Academy of Scientific and Innovative Research, New Delhi 110001, India
| | | | - Kishor Mohanan
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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9
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Jana S, Roy A, Lepore SD. Diversification reactions of γ-silyl allenyl esters: selective conversion to all-carbon quaternary centers and γ-allene dicarbinols. Chem Commun (Camb) 2018; 53:5125-5127. [PMID: 28435948 DOI: 10.1039/c7cc01708a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unique reactivity of γ-silyl allenyl esters is described. Taking advantage of the silyl group as a fluoride acceptor, these allenoates readily underwent addition to a variety of electrophiles to selectively yield products with all-carbon quaternary centers or allenoate dicarbinols. These dicarbinols were subsequently converted to novel highly substituted 6-hydro-2-pyrones.
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Affiliation(s)
- Susovan Jana
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, FL 33431-0991, USA.
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10
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Shi X, He Y, Zhang X, Fan X. Selective syntheses of diversely substituted 2-hydroxy-4′-hydroxybenzophenones through [4 + 2] or [3 + 3] annulation of penta-3,4-dien-2-ones with 3-formylchromones. Org Chem Front 2017. [DOI: 10.1039/c7qo00366h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A selective synthesis of 2-hydroxy-4′-hydroxybenzophenones or their 3′-acylated counterparts via the cascade reactions of 3-formylchromones with diversely substituted penta-3,4-dien-2-ones is presented.
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Affiliation(s)
- Xiaonan Shi
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Yan He
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Xinying Zhang
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
| | - Xuesen Fan
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
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11
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Martzel T, Lohier JF, Gaumont AC, Brière JF, Perrio S. Unique Reactivity of α-Substituted Electron-Deficient Allenes using Sulfinate Salts as Lewis Base Organocatalysts. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600929] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Thomas Martzel
- Normandie Univ; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
| | | | | | - Jean-François Brière
- Normandie Univ; INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014); 76000 Rouen France
| | - Stéphane Perrio
- Normandie Univ; ENSICAEN, UNICAEN, CNRS, LCMT; 14000 Caen France
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12
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Reboredo S, Girón RM, Filippone S, Mikie T, Sakurai T, Seki S, Martín N. Cyclobuteno[60]fullerenes as Efficient n-Type Organic Semiconductors. Chemistry 2016; 22:13627-31. [DOI: 10.1002/chem.201602813] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Silvia Reboredo
- Universidad Complutense de Madrid; Av. Complutense S/N 28040 Madrid Spain
| | - Rosa M. Girón
- Universidad Complutense de Madrid; Av. Complutense S/N 28040 Madrid Spain
| | | | - Tsubasa Mikie
- Department of Molecular Engineering; Kyoto University; Nishikyo-ku 615-8510 Kyoto Japan
| | - Tsuneaki Sakurai
- Department of Molecular Engineering; Kyoto University; Nishikyo-ku 615-8510 Kyoto Japan
| | - Shu Seki
- Department of Molecular Engineering; Kyoto University; Nishikyo-ku 615-8510 Kyoto Japan
| | - Nazario Martín
- Universidad Complutense de Madrid; Av. Complutense S/N 28040 Madrid Spain
- IMDEA-Nanoscience Institute; Campus de Cantoblanco, C/ Faraday, 9 28049 Madrid Spain
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13
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Fan X, He Y, Zhang X. Recent Advances in the Reactions of 1,2-Allenic Ketones and α-Allenic Alcohols. CHEM REC 2016; 16:1635-46. [DOI: 10.1002/tcr.201500301] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Indexed: 01/11/2023]
Affiliation(s)
- Xuesen Fan
- School of Chemistry and Chemical Engineering Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education; Henan Normal University; 46 East Jianshe Road Xinxiang Henan 453007 P. R. China
| | - Yan He
- School of Environment Henan Normal University; 46 East Jianshe Road Xinxiang Henan 453007 P. R. China
| | - Xinying Zhang
- School of Chemistry and Chemical Engineering Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education; Henan Normal University; 46 East Jianshe Road Xinxiang Henan 453007 P. R. China
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14
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Mizota I, Shimizu M. Umpolung Reactions of α-Imino Esters: Useful Methods for the Preparation of α-Amino Acid Frameworks. CHEM REC 2016; 16:688-702. [DOI: 10.1002/tcr.201500267] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Isao Mizota
- Department of Chemistry for Materials; Graduate School of Engineering Mie University; Tsu Mie 514-8507 Japan
| | - Makoto Shimizu
- Department of Chemistry for Materials; Graduate School of Engineering Mie University; Tsu Mie 514-8507 Japan
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15
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Malhotra D, Liu L, Wang W, Durham M, Hammond GB, Xu B. Gold catalyzed synthesis of fluorinated tetrahydrofurans and lactones. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.05.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Wang M, Fang Z, Fu C, Ma S. Metal Alkoxide Promoted Regio- and Stereoselective CO and CC Metathesis of Allenoates with Aldehydes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Wang M, Fang Z, Fu C, Ma S. Metal Alkoxide Promoted Regio- and Stereoselective CO and CC Metathesis of Allenoates with Aldehydes. Angew Chem Int Ed Engl 2014; 53:3214-7. [DOI: 10.1002/anie.201310183] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 12/23/2013] [Indexed: 11/07/2022]
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18
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Fan X, Shen N, Li B, Guo S, Zhang X. Synthesis of 3-(4-oxo-4H-chromen-3-yl)acrylates through the tandem reaction of 3-(2-buta-2,3-dienoylphenoxy)acrylates. RSC Adv 2014. [DOI: 10.1039/c4ra00277f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A straightforward and efficient synthesis of 2-substituted 3-(4-oxo-4H-chromen-3-yl)acrylates through base-catalyzed tandem reaction of the readily available 3-(2-buta-2,3-dienoylphenoxy)acrylates under extremely mild conditions has been developed.
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Affiliation(s)
- Xuesen Fan
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
| | - Nana Shen
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
| | - Bin Li
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
| | - Shenghai Guo
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
| | - Xinying Zhang
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
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19
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Mizota I, Matsuda Y, Kamimura S, Tanaka H, Shimizu M. Regioselective Tandem N-Alkylation/C-Acylation of β,γ-Alkynyl α-Imino Esters. Org Lett 2013; 15:4206-9. [DOI: 10.1021/ol401934x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Isao Mizota
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan
| | - Yuri Matsuda
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan
| | - Satoshi Kamimura
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan
| | - Hirotaka Tanaka
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan
| | - Makoto Shimizu
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan
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20
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Xie X, Li Y, Fox JM. Selective syntheses of Δ(α,β) and Δ(β,γ) butenolides from allylic cyclopropenecarboxylates via tandem ring expansion/[3,3]-sigmatropic rearrangements. Org Lett 2013; 15:1500-3. [PMID: 23514430 PMCID: PMC3908874 DOI: 10.1021/ol400264a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Allylic cyclopropenecarboxylates undergo ring expansion reactions to give 2-allyloxyfuran intermediates, which subsequently rearrange to Δ(β,γ) butenolides via a Claisen rearrangement or to the corresponding Δ(α,β) butenolides via further Cope rearrangement. Also described are methods for chirality transfer in the rearrangement of nonracemic allylic esters.
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Affiliation(s)
- Xiaocong Xie
- Brown Laboratories, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Yi Li
- Brown Laboratories, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Joseph M. Fox
- Brown Laboratories, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
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21
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Allenes in Catalytic Asymmetric Synthesis and Natural Product Syntheses. Angew Chem Int Ed Engl 2012; 51:3074-112. [DOI: 10.1002/anie.201101460] [Citation(s) in RCA: 758] [Impact Index Per Article: 63.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Indexed: 02/06/2023]
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22
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Yu S, Ma S. Allene in katalytischer asymmetrischer Synthese und Naturstoffsynthese. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201101460] [Citation(s) in RCA: 254] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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23
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Use of Linear Free Energy Relationships (LFERs) to elucidate the mechanisms of reaction of a γ-methyl-β-alkynyl and an ortho-substituted aryl chloroformate ester. Int J Mol Sci 2012; 13:665-682. [PMID: 22312278 PMCID: PMC3269712 DOI: 10.3390/ijms13010665] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 01/05/2012] [Accepted: 01/05/2012] [Indexed: 01/13/2023] Open
Abstract
The specific rates of solvolysis of 2-butyn-1-yl-chloroformate (1) and 2-methoxyphenyl chloroformate (2) are studied at 25.0 °C in a series of binary aqueousorganic mixtures. The rates of reaction obtained are then analyzed using the extended Grunwald-Winstein (G-W) equation and the results are compared to previously published G-W analyses for phenyl chloroformate (3), propargyl chloroformate (4), p-methoxyphenyl choroformate (5), and p-nitrophenyl chloroformate (6). For 1, the results indicate that dual side-by-side addition-elimination and ionization pathways are occurring in some highly ionizing solvents due to the presence of the electron-donating γ-methyl group. For 2, the analyses indicate that the dominant mechanism is a bimolecular one where the formation of a tetrahedral intermediate is rate-determining.
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24
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Gold‐Catalyzed, Intramolecular, Oxygen‐Transfer Reactions of 2‐Alkynyl‐1,5‐diketones or 2‐Alkynyl‐5‐ketoesters: Scope, Expansion, and Mechanistic Investigations on a New [4+2] Cycloaddition. Chemistry 2011; 17:10690-9. [DOI: 10.1002/chem.201101448] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Indexed: 11/07/2022]
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25
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Xu B, Wang W, Liu LP, Han J, Jin Z, Hammond GB. Synthetic evolutions in the nucleophilic addition to alkynes. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.09.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Malhotra D, Liu LP, Hammond GB. Tandem Michael Addition/Aldol Reaction of Allenic Ketones with Alkyl Vinyl Ketones: Versatile Synthesis of 2-Alkynyl 1,5-Diketones, 4-Alkynyl-3-hydroxycyclohexanones and 4-Alkynylcyclohexenones. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001161] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Geoffroy P, Ballet MP, Finck S, Marchioni E, Miesch M. Domino reactions starting from alkynyl esters tethered to 2-methyl-1,3-cycloalkanediones. Efficient access to polyfunctionalized diquinanes, allenoates, and oxetanes. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.06.025] [Citation(s) in RCA: 8] [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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28
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Chemistry of allenic/propargylic anions generated by base treatment of sulfonylallenes: synthesis of 1-alkynyl-1-sulfonylcycloalkanes and cycloalkanols. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.03.071] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Liu LP, Hammond GB. Highly Efficient and Tunable Synthesis of Dioxabicyclo[4.2.1] Ketals and Tetrahydropyrans via Gold-Catalyzed Cycloisomerization of 2-Alkynyl-1,5-diols. Org Lett 2009; 11:5090-2. [DOI: 10.1021/ol902215n] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Le-Ping Liu
- Department of Chemistry, University of Louisville, Louisville, Kentucky, 40292
| | - Gerald B. Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky, 40292
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30
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Liu LP, Hammond G. Reactions of Cationic Gold(I) with Allenoates: Synthesis of Stable Organogold(I) Complexes and Mechanistic Investigations on Gold-Catalyzed Cyclizations. Chem Asian J 2009; 4:1230-6. [DOI: 10.1002/asia.200900091] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Hashimoto T, Sakata K, Maruoka K. α-Chiral Acetylenes Having an All-Carbon Quaternary Center: Phase Transfer Catalyzed Enantioselective α Alkylation of α-Alkyl-α-alkynyl Esters. Angew Chem Int Ed Engl 2009; 48:5014-7. [DOI: 10.1002/anie.200901977] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Hashimoto T, Sakata K, Maruoka K. α-Chiral Acetylenes Having an All-Carbon Quaternary Center: Phase Transfer Catalyzed Enantioselective α Alkylation of α-Alkyl-α-alkynyl Esters. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901977] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Aponte JC, Hammond GB, Xu B. TBAF-Mediated Aldol Reaction of β-Allenoates: Regio- and Stereoselective Synthesis of (2E,4E)-4-Carbinol Alkadienoates. J Org Chem 2009; 74:4623-5. [DOI: 10.1021/jo900567m] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- José C. Aponte
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Gerald B. Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Bo Xu
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
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34
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Intramolecular Alkynylogous Mukaiyama Aldol Reaction Starting from Bicyclic Alkanones Tethered to Alkynyl Esters: Formal Total Synthesis of (±)-Hamigeran B. Chemistry 2009; 15:4394-401. [DOI: 10.1002/chem.200802309] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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Wang W, Xu B, Hammond GB. Efficient Synthesis of γ-Keto Esters through Neighboring Carbonyl Group-Assisted Regioselective Hydration of 3-Alkynoates. J Org Chem 2009; 74:1640-3. [DOI: 10.1021/jo802450n] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weibo Wang
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Bo Xu
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Gerald B. Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
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36
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Yang H, Xu B, Hammond GB. Highly Regioselective Fluorination and Iodination of Alkynyl Enolates. Org Lett 2008; 10:5589-91. [DOI: 10.1021/ol802451e] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Han Yang
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Bo Xu
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Gerald B. Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
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