1
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Syntheses of perillene and natural congeners via Li2CuCl4-catalyzed cross-coupling reaction of allylic carbonates. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153610] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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2
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Junk L, Kazmaier U. The Allylic Alkylation of Ketone Enolates. ChemistryOpen 2020; 9:929-952. [PMID: 32953384 PMCID: PMC7482671 DOI: 10.1002/open.202000175] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/03/2020] [Indexed: 01/14/2023] Open
Abstract
The palladium-catalyzed allylic alkylation of non-stabilized ketone enolates was thought for a long time to be not as efficient as the analogous reactions of stabilized enolates, e. g. of malonates and β-ketoesters. The field has experienced a rapid development during the last two decades, with a range of new, highly efficient protocols evolved. In this review, the early developments as well as current methods and applications of palladium-catalyzed ketone enolate allylations will be discussed.
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Affiliation(s)
- Lukas Junk
- Organic Chemistry ISaarland UniversityCampus C4.266123SaarbrückenGermany
| | - Uli Kazmaier
- Organic Chemistry ISaarland UniversityCampus C4.266123SaarbrückenGermany
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3
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Shrestha R, Khanal HD, Yang W, Kim SH, Shim J, Lee YR. Metal‐Free
N
‐Annulation of 3‐Formylchromones with α‐Amino Ketones for the Construction of Diverse
N
‐Functionalized Pyrroles. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000151] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rajeev Shrestha
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
| | - Hari Datta Khanal
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
| | - Won‐Guen Yang
- Analysis Research DivisionDaegu CenterKorea Basic Science Institute Daegu 41566 (Republic of Korea
| | - Sung Hong Kim
- Analysis Research DivisionDaegu CenterKorea Basic Science Institute Daegu 41566 (Republic of Korea
| | - Jae‐Jin Shim
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
| | - Yong Rok Lee
- School of Chemical EngineeringYeungnam University Gyeongsan 38541 (Republic of Korea
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4
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Prudel C, Huwig K, Kazmaier U. Stereoselective Allylic Alkylations of Amino Ketones and Their Application in the Synthesis of Highly Functionalized Piperidines. Chemistry 2020; 26:3181-3188. [PMID: 31943413 PMCID: PMC7079034 DOI: 10.1002/chem.202000051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Indexed: 11/22/2022]
Abstract
Chelated ketone enolates are excellent nucleophiles for allylic alkylations. Electron-withdrawing groups on the allyl moiety allow subsequent intramolecular Michael additions giving rise to piperidines with up to five stereogenic centers.
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Affiliation(s)
- Cynthia Prudel
- Organic ChemistrySaarland University, Campus C4.266123SaarbrückenGermany
| | - Kai Huwig
- Organic ChemistrySaarland University, Campus C4.266123SaarbrückenGermany
| | - Uli Kazmaier
- Organic ChemistrySaarland University, Campus C4.266123SaarbrückenGermany
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5
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Horn A, Kazmaier U. Stereoselective Modification of N-(α-Hydroxyacyl)-glycinesters via Palladium-Catalyzed Allylic Alkylation. Org Lett 2019; 21:4595-4599. [DOI: 10.1021/acs.orglett.9b01497] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander Horn
- Organic Chemistry I, Saarland University, Campus, Building C4.2, D-66123 Saarbrücken, Germany
| | - Uli Kazmaier
- Organic Chemistry I, Saarland University, Campus, Building C4.2, D-66123 Saarbrücken, Germany
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6
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Dwulet NC, Zolfaghari TA, Brown ML, Cannon JS. Diastereoselective Synthesis of Unnatural Amino Acids by Alkylation of α- tert-Butanesulfinamide Auxiliary-Bound Enolates. J Org Chem 2018; 83:11510-11518. [PMID: 30191716 DOI: 10.1021/acs.joc.8b01379] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new chiral auxiliary for the diastereoselective alkylation of amino ester enolates that takes advantage of chiral information stored on the enolate side of the amino ester substrate has been developed. Chiral α-sulfinamido esters were alkylated under basic conditions in good yields (up to 90%) and good to high diastereoselectivities (generally >6:1) to provide unnatural mono- and α,α-disubstituted amino acid derivatives. This auxiliary allowed for the ready conversion of ester functionality without the need for esoteric reagents. Furthermore, the auxiliary is easily removed to provide enantiopure amino acids. Computational studies revealed that a chelated transition state governs electrophile addition from the convex face of a transient bicyclic intermediate. This method allows ready access to enantioenriched natural and unnatural amino acids.
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Affiliation(s)
- Natalie C Dwulet
- Department of Chemistry , Occidental College , 1600 Campus Road M-5 , Los Angeles , California 90041 , United States
| | - Tina A Zolfaghari
- Department of Chemistry , Occidental College , 1600 Campus Road M-5 , Los Angeles , California 90041 , United States
| | - Molly L Brown
- Department of Chemistry , Occidental College , 1600 Campus Road M-5 , Los Angeles , California 90041 , United States
| | - Jeffrey S Cannon
- Department of Chemistry , Occidental College , 1600 Campus Road M-5 , Los Angeles , California 90041 , United States
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7
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Pei‐Sen G, Jin‐Lei Z, Ning L, Jiang ZZ, Yang Y, Zi‐Wei G, Weiqiang Z, Li‐Wen X. Synthesis of multi‐functionalized carbonyl compounds by palladium–catalysed γ‐substitution of MBH adducts with activated amides. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gao Pei‐Sen
- School of Chemistry and Chemical EngineeringShaanxi Normal University Shaanxi China
| | - Zhang Jin‐Lei
- School of Chemistry and Chemical EngineeringShaanxi Normal University Shaanxi China
| | - Li Ning
- School of Chemistry and Chemical EngineeringShaanxi Normal University Shaanxi China
| | - Zheng Zhan Jiang
- Key Laboratory of Organosilicon, Chemistry and Material Technology of Ministry of EducationHangzhou Normal University Hangzhou China
| | - Yuan Yang
- Key Laboratory of Organosilicon, Chemistry and Material Technology of Ministry of EducationHangzhou Normal University Hangzhou China
| | - Gao Zi‐Wei
- School of Chemistry and Chemical EngineeringShaanxi Normal University Shaanxi China
| | - Zhang Weiqiang
- School of Chemistry and Chemical EngineeringShaanxi Normal University Shaanxi China
| | - Xu Li‐Wen
- School of Chemistry and Chemical EngineeringShaanxi Normal University Shaanxi China
- Key Laboratory of Organosilicon, Chemistry and Material Technology of Ministry of EducationHangzhou Normal University Hangzhou China
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8
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Huo X, He R, Fu J, Zhang J, Yang G, Zhang W. Stereoselective and Site-Specific Allylic Alkylation of Amino Acids and Small Peptides via a Pd/Cu Dual Catalysis. J Am Chem Soc 2017; 139:9819-9822. [DOI: 10.1021/jacs.7b05460] [Citation(s) in RCA: 151] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Xiaohong Huo
- School
of Chemistry and Chemical Engineering and ‡School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Rui He
- School
of Chemistry and Chemical Engineering and ‡School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Jingke Fu
- School
of Chemistry and Chemical Engineering and ‡School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Jiacheng Zhang
- School
of Chemistry and Chemical Engineering and ‡School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Guoqiang Yang
- School
of Chemistry and Chemical Engineering and ‡School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Wanbin Zhang
- School
of Chemistry and Chemical Engineering and ‡School of Pharmacy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China
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9
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Jiang X, Hartwig JF. Iridium-Catalyzed Enantioselective Allylic Substitution of Aliphatic Esters with Silyl Ketene Acetals as the Ester Enolates. Angew Chem Int Ed Engl 2017; 56:8887-8891. [PMID: 28597600 DOI: 10.1002/anie.201704354] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Indexed: 02/03/2023]
Abstract
Enantioselective allylic substitution with enolates derived from aliphatic esters under mild conditions remains challenging. Herein we report iridium-catalyzed enantioselective allylation reactions of silyl ketene acetals, the silicon enolates of esters, to form products containing a quaternary carbon atom at the nucleophile moiety and a tertiary carbon atom at the electrophile moiety. Under relatively neutral conditions, the allylated aliphatic esters were obtained with excellent regioselectivity and enantioselectivity. These products were readily converted into primary alcohols, carboxylic acids, amides, isocyanates, and carbamates, as well as tetrahydrofuran and γ-butyrolactone derivatives, without erosion of enantiomeric purity.
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Affiliation(s)
- Xingyu Jiang
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA
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10
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Jiang X, Hartwig JF. Iridium-Catalyzed Enantioselective Allylic Substitution of Aliphatic Esters with Silyl Ketene Acetals as the Ester Enolates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704354] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Xingyu Jiang
- Department of Chemistry; University of California; Berkeley CA 94720 USA
| | - John F. Hartwig
- Department of Chemistry; University of California; Berkeley CA 94720 USA
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11
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Balaraman K, Wolf C. Katalytische enantioselektive und diastereoselektive allylische Alkylierung mit Fluorenolaten: Synthese von C3‐fluorierten und quartären Oxindolen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608752] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Kaluvu Balaraman
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
| | - Christian Wolf
- Department of Chemistry Georgetown University 37th and O Streets Washington DC 20057 USA
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12
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Balaraman K, Wolf C. Catalytic Enantioselective and Diastereoselective Allylic Alkylation with Fluoroenolates: Efficient Access to C3-Fluorinated and All-Carbon Quaternary Oxindoles. Angew Chem Int Ed Engl 2016; 56:1390-1395. [PMID: 28026079 DOI: 10.1002/anie.201608752] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/28/2016] [Indexed: 11/06/2022]
Abstract
Synthetically versatile 3,3-disubstituted fluorooxindoles exhibiting vicinal chirality centers were obtained in high yields and with excellent enantio-, diastereo-, and regioselectivity through catalytic asymmetric fluoroenolate alkylation with allylic acetates. The reaction proceeds under mild conditions and can be scaled up without compromising the asymmetric induction. The unique synthetic usefulness of the products is highlighted by the incorporation of additional functionalities and the formation of 3-fluorinated oxindoles exhibiting an array of four adjacent centers of chirality. A new C-F bond functionalization path that provides unprecedented possibilities for the stereoselective generation of a chiral quaternary carbon center in the alkaloid scaffold is introduced.
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Affiliation(s)
- Kaluvu Balaraman
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC, 20057, USA
| | - Christian Wolf
- Department of Chemistry, Georgetown University, 37th and O Streets, Washington, DC, 20057, USA
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13
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Gao PS, Li N, Zhang JL, Zhu ZL, Gao ZW, Sun HM, Zhang WQ, Xu LW. Highly Efficient Palladium-Catalyzed Allylic Alkylation of Cyanoacetamides with Controllable and Chemoselective Mono- and Double Substitutions. ChemCatChem 2016. [DOI: 10.1002/cctc.201601021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Pei-Sen Gao
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education (MOE) and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P.R. China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University (HZNU); P.R. China
| | - Ning Li
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education (MOE) and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P.R. China
| | - Jin-Lei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education (MOE) and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P.R. China
| | - Zhuang-Li Zhu
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education (MOE) and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P.R. China
| | - Zi-Wei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education (MOE) and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P.R. China
| | - Hua-Ming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education (MOE) and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P.R. China
| | - Wei-Qiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education (MOE) and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P.R. China
| | - Li-Wen Xu
- Key Laboratory of Applied Surface and Colloid Chemistry; Ministry of Education (MOE) and School of Chemistry and Chemical Engineering; Shaanxi Normal University; Xi'an 710062 P.R. China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education; Hangzhou Normal University (HZNU); P.R. China
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14
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Jiang X, Chen W, Hartwig JF. Iridium-Catalyzed Diastereoselective and Enantioselective Allylic Substitutions with Acyclic α-Alkoxy Ketones. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600235] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xingyu Jiang
- Department of Chemistry; University of California; Berkeley CA 94720 USA
- Division of Chemical Sciences; Lawrence Berkeley National Laboratory; Berkeley CA 94720 USA
| | - Wenyong Chen
- Department of Chemistry; University of California; Berkeley CA 94720 USA
- Division of Chemical Sciences; Lawrence Berkeley National Laboratory; Berkeley CA 94720 USA
| | - John F. Hartwig
- Department of Chemistry; University of California; Berkeley CA 94720 USA
- Division of Chemical Sciences; Lawrence Berkeley National Laboratory; Berkeley CA 94720 USA
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15
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Jiang X, Chen W, Hartwig JF. Iridium-Catalyzed Diastereoselective and Enantioselective Allylic Substitutions with Acyclic α-Alkoxy Ketones. Angew Chem Int Ed Engl 2016; 55:5819-23. [PMID: 27038004 DOI: 10.1002/anie.201600235] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Indexed: 01/27/2023]
Abstract
The asymmetric alkylation of acyclic ketones is a longstanding challenge in organic synthesis. Reported herein are diastereoselective and enantioselective allylic substitutions with acyclic α-alkoxy ketones catalyzed by a metallacyclic iridium complex to form products with contiguous stereogenic centers derived from the nucleophile and electrophile. These reactions occur between allyl methyl carbonates and unstabilized copper(I) enolates generated in situ from acyclic α-alkoxy ketones. The resulting products can be readily converted into enantioenriched tertiary alcohols and tetrahydrofuran derivatives without erosion of enantiomeric purity.
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Affiliation(s)
- Xingyu Jiang
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.,Division of Chemical Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Wenyong Chen
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA.,Division of Chemical Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - John F Hartwig
- Department of Chemistry, University of California, Berkeley, CA, 94720, USA. .,Division of Chemical Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
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16
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Kanbayashi N, Yamazawa A, Takii K, Okamura TA, Onitsuka K. Planar-Chiral Cyclopentadienyl-Ruthenium-Catalyzed Regio- and Enantioselective Asymmetric Allylic Alkylation of Silyl Enolates under Unusually Mild Conditions. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500970] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Song Y, Li K, Shu T, Xie Y, Zhang Y, Qu J. Prochiral alkyl-aminomethyl ketones as convenient precursors for efficient synthesis of chiral (2,3,5)-tri-substituted pyrrolidines via an organo-catalysed tandem reaction. RSC Adv 2016. [DOI: 10.1039/c6ra10153d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
2-Alkanoyl-3-aryl-5-hydroxy pyrrolidines were prepared in high yields and ees via a secondary amine catalyzed tandem process.
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Affiliation(s)
- Yuming Song
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Ke Li
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Tao Shu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Yamei Xie
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Yixin Zhang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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