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Munir R, Zahoor AF, Javed S, Parveen B, Mansha A, Irfan A, Khan SG, Irfan A, Kotwica-Mojzych K, Mojzych M. Simmons-Smith Cyclopropanation: A Multifaceted Synthetic Protocol toward the Synthesis of Natural Products and Drugs: A Review. Molecules 2023; 28:5651. [PMID: 37570621 PMCID: PMC10420228 DOI: 10.3390/molecules28155651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/16/2023] [Accepted: 07/20/2023] [Indexed: 08/13/2023] Open
Abstract
Simmons-Smith cyclopropanation is a widely used reaction in organic synthesis for stereospecific conversion of alkenes into cyclopropane. The utility of this reaction can be realized by the fact that the cyclopropane motif is a privileged synthetic intermediate and a core structural unit of many biologically active natural compounds such as terpenoids, alkaloids, nucleosides, amino acids, fatty acids, polyketides and drugs. The modified form of Simmons-Smith cyclopropanation involves the employment of Et2Zn and CH2I2 (Furukawa reagent) toward the total synthesis of a variety of structurally complex natural products that possess broad range of biological activities including anticancer, antimicrobial and antiviral activities. This review aims to provide an intriguing glimpse of the Furukawa-modified Simmons-Smith cyclopropanation, within the year range of 2005 to 2022.
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Affiliation(s)
- Ramsha Munir
- Medicinal Chemistry Research Lab, Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan; (R.M.); (B.P.); (A.M.); (S.G.K.); (A.I.)
| | - Ameer Fawad Zahoor
- Medicinal Chemistry Research Lab, Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan; (R.M.); (B.P.); (A.M.); (S.G.K.); (A.I.)
| | - Sadia Javed
- Department of Biochemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan;
| | - Bushra Parveen
- Medicinal Chemistry Research Lab, Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan; (R.M.); (B.P.); (A.M.); (S.G.K.); (A.I.)
| | - Asim Mansha
- Medicinal Chemistry Research Lab, Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan; (R.M.); (B.P.); (A.M.); (S.G.K.); (A.I.)
| | - Ahmad Irfan
- Department of Chemistry, College of Science, King Khalid University, Abha 61413, Saudi Arabia;
| | - Samreen Gul Khan
- Medicinal Chemistry Research Lab, Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan; (R.M.); (B.P.); (A.M.); (S.G.K.); (A.I.)
| | - Ali Irfan
- Medicinal Chemistry Research Lab, Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan; (R.M.); (B.P.); (A.M.); (S.G.K.); (A.I.)
| | - Katarzyna Kotwica-Mojzych
- Laboratory of Experimental Cytology, Medical University of Lublin, Radziwiłłowska 11, 20-080 Lublin, Poland;
| | - Mariusz Mojzych
- Department of Chemistry, Siedlce University of Natural Sciences and Humanities, 3-go Maja 54, 08-110 Siedlce, Poland
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Zhou P, Yi Y, Hua YZ, Jia SK, Wang MC. Dinuclear Zinc Catalyzed Enantioselective Dearomatization [3+2] Annulation of 2-Nitrobenzofurans and 2-Nitrobenzothiophenes. Chemistry 2021; 28:e202103688. [PMID: 34713514 DOI: 10.1002/chem.202103688] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Indexed: 12/18/2022]
Abstract
The application of dinuclear zinc catalysts in a dearomatization reaction has been developed. Catalytic asymmetric dearomatization [3+2] annulations of 2-nitrobenzofurans or 2-nitrobenzothiophenes with CF3 -containing N-unprotected isatin-derived azomethine ylides catalyzed by dinuclear zinc catalysts are realized with excellent diastereomer ratios (dr) of >20 : 1 and enantiomeric excess (ee) of up to 99 %. This protocol provides a practical, straightforward access to structurally diverse pyrrolidinyl spirooxindoles containing a 2,3-fused-dihydrobenzofuran (or dihydrobenzothiphene) moiety, and four contiguous stereocenters. Reactions can be performed on a gram scale. The absolute configuration of products is confirmed by X-ray single crystal structure analysis, and a possible mechanism is proposed.
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Affiliation(s)
- Peng Zhou
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
| | - Yang Yi
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
| | - Yuan-Zhao Hua
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
| | - Shi-Kun Jia
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
| | - Min-Can Wang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China
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3
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Trost BM, Hung C(J, Mata G. Zweikernige Metall‐ProPhenol‐Katalysatoren: Entwicklung und Anwendungen in der Synthese. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201909692] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Chao‐I (Joey) Hung
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Guillaume Mata
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
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Trost BM, Tracy JS, Yusoontorn T, Hung CJ. Acyclic Branched α‐Fluoro Ketones for the Direct Asymmetric Mannich Reaction Leading to the Synthesis of β‐Tetrasubstituted β‐Fluoro Amines. Angew Chem Int Ed Engl 2020; 59:2370-2374. [DOI: 10.1002/anie.201913927] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Jacob S. Tracy
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Tas Yusoontorn
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Chao‐I Joey Hung
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
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5
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Park D, Jette CI, Kim J, Jung W, Lee Y, Park J, Kang S, Han MS, Stoltz BM, Hong S. Enantioselective Alkynylation of Trifluoromethyl Ketones Catalyzed by Cation‐Binding Salen Nickel Complexes. Angew Chem Int Ed Engl 2020; 59:775-779. [DOI: 10.1002/anie.201913057] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 11/06/2019] [Indexed: 01/11/2023]
Affiliation(s)
- Dongseong Park
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Carina I. Jette
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical EngineeringCalifornia Institute of Technology Pasadena CA 91125 USA
| | - Jiyun Kim
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Woo‐Ok Jung
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Yongmin Lee
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Jongwoo Park
- Department of ChemistryUniversity of Florida P.O.Box 117200 Gainesville FL 32611-7200 USA
- Current address: Process R&D CenterSK biotek 325 Exporo Yuseong-gu Daejeon 34124 Republic of Korea
| | - Seungyoon Kang
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Min Su Han
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Brian M. Stoltz
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical EngineeringCalifornia Institute of Technology Pasadena CA 91125 USA
| | - Sukwon Hong
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
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6
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Trost BM, Tracy JS, Yusoontorn T, Hung CJ. Acyclic Branched α‐Fluoro Ketones for the Direct Asymmetric Mannich Reaction Leading to the Synthesis of β‐Tetrasubstituted β‐Fluoro Amines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913927] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Jacob S. Tracy
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Tas Yusoontorn
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
| | - Chao‐I Joey Hung
- Department of ChemistryStanford University 333 Campus Dr Stanford CA 94305 USA
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7
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Park D, Jette CI, Kim J, Jung W, Lee Y, Park J, Kang S, Han MS, Stoltz BM, Hong S. Enantioselective Alkynylation of Trifluoromethyl Ketones Catalyzed by Cation‐Binding Salen Nickel Complexes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201913057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dongseong Park
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Carina I. Jette
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical EngineeringCalifornia Institute of Technology Pasadena CA 91125 USA
| | - Jiyun Kim
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Woo‐Ok Jung
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Yongmin Lee
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Jongwoo Park
- Department of ChemistryUniversity of Florida P.O.Box 117200 Gainesville FL 32611-7200 USA
- Current address: Process R&D CenterSK biotek 325 Exporo Yuseong-gu Daejeon 34124 Republic of Korea
| | - Seungyoon Kang
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Min Su Han
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
| | - Brian M. Stoltz
- Warren And Katharine Schlinger Laboratory for Chemistry and Chemical EngineeringCalifornia Institute of Technology Pasadena CA 91125 USA
| | - Sukwon Hong
- Department of ChemistryGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
- School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST) 123 Cheomdan-gwagiro Buk-gu Gwangju 61005 Republic of Korea
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Trost BM, Hung C(J, Mata G. Dinuclear Metal‐ProPhenol Catalysts: Development and Synthetic Applications. Angew Chem Int Ed Engl 2019; 59:4240-4261. [DOI: 10.1002/anie.201909692] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Barry M. Trost
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Chao‐I (Joey) Hung
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
| | - Guillaume Mata
- Department of ChemistryStanford University 333 Campus Drive Stanford CA 94305 USA
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Steib P, Breit B. Concise Total Synthesis of (−)‐Vermiculine through a Rhodium‐Catalyzed
C
2
‐Symmetric Dimerization Strategy. Chemistry 2019; 25:3532-3535. [DOI: 10.1002/chem.201900216] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Indexed: 12/26/2022]
Affiliation(s)
- Philip Steib
- Institut für Organische ChemieAlbert-Ludwigs-Universität Freiburg Albertstrasse 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische ChemieAlbert-Ludwigs-Universität Freiburg Albertstrasse 21 79104 Freiburg im Breisgau Germany
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10
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Lessing T, van Mark H, Müller TJJ. Substituted 1H-1,2,3-Triazol-4-yl-1H-pyrrolo[2,3-b]pyridines by De Novo One-Pot Ring-Forming Coupling/Cyclization/Desilylation Cu Alkyne/Azide Cycloaddition (AAC) Sequence. Chemistry 2018; 24:8974-8979. [PMID: 29726615 DOI: 10.1002/chem.201801632] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Indexed: 11/06/2022]
Abstract
Substituted 1H-1,2,3-triazol-4-yl-pyrrolo[2,3-b]pyridines are efficiently prepared by a one-pot coupling/cyclization/desilylation Cu alkyne/azide cycloaddition (CuAAC) sequence in the sense of a consecutive three-component fashion. The key feature of this new de novo formation of azole and triazole anellation is the sequentially Pd/Cu-catalyzed process employing tri(iso-propyl)silyl (TIPS) butadiyne as a four-carbon building block. In addition, the sequence can be expanded in a four-component fashion also employing the in situ formation of the required azides.
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Affiliation(s)
- Timo Lessing
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, d-40225, Düsseldorf, Germany
| | - Hauke van Mark
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, d-40225, Düsseldorf, Germany
| | - Thomas J J Müller
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, d-40225, Düsseldorf, Germany
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11
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Steib P, Breit B. Enantioselective Rhodium‐Catalyzed Dimerization of ω‐Allenyl Carboxylic Acids: Straightforward Synthesis of
C
2
‐Symmetric Macrodiolides. Angew Chem Int Ed Engl 2018; 57:6572-6576. [DOI: 10.1002/anie.201803369] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Philip Steib
- Institut für Organische ChemieAlbert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische ChemieAlbert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg im Breisgau Germany
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12
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Steib P, Breit B. Enantioselective Rhodium‐Catalyzed Dimerization of ω‐Allenyl Carboxylic Acids: Straightforward Synthesis of
C
2
‐Symmetric Macrodiolides. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803369] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Philip Steib
- Institut für Organische ChemieAlbert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische ChemieAlbert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg im Breisgau Germany
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Cook AM, Wolf C. Efficient Access to Multifunctional Trifluoromethyl Alcohols through Base-Free Catalytic Asymmetric C-C Bond Formation with Terminal Ynamides. Angew Chem Int Ed Engl 2016; 55:2929-33. [PMID: 26806871 PMCID: PMC4806781 DOI: 10.1002/anie.201510910] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Indexed: 11/09/2022]
Abstract
The asymmetric addition of terminal ynamides to trifluoromethyl ketones with a readily available chiral zinc catalyst gives CF3 -substituted tertiary propargylic alcohols in up to 99 % yield and 96 % ee. The exclusion of organozinc additives and base as well as the general synthetic utility of the products are key features of this reaction. The value of the β-hydroxy-β-trifluoromethyl ynamides is exemplified by selective transformations to chiral Z- and E-enamides, an amide, and N,O-ketene acetals. The highly regioselective hydration, stereoselective reduction, and hydroacyloxylation reactions proceed with high yields and without erosion of the ee value of the parent β-hydroxy ynamides.
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Affiliation(s)
- Andrea M Cook
- 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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14
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Cook AM, Wolf C. Basenfreie katalytische asymmetrische C-C-Kupplung mit terminalen Inamiden als effizienter Zugang zu multifunktionellen Trifluormethylalkoholen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510910] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Andrea M. Cook
- 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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Haydl AM, Breit B. Atom-Economical Dimerization Strategy by the Rhodium-Catalyzed Addition of Carboxylic Acids to Allenes: Protecting-Group-Free Synthesis of Clavosolide A and Late-Stage Modification. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506618] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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16
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Haydl AM, Breit B. Atom‐Economical Dimerization Strategy by the Rhodium‐Catalyzed Addition of Carboxylic Acids to Allenes: Protecting‐Group‐Free Synthesis of Clavosolide A and Late‐Stage Modification. Angew Chem Int Ed Engl 2015; 54:15530-4. [DOI: 10.1002/anie.201506618] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/19/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Alexander M. Haydl
- Institut für Organische Chemie, Albert‐Ludwigs‐Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau (Germany)
| | - Bernhard Breit
- Institut für Organische Chemie, Albert‐Ludwigs‐Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau (Germany)
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Kumar M, Kumar A, Rizvi MA, Shah BA. Acetaldehyde in asymmetric organocatalytic transformations. RSC Adv 2015. [DOI: 10.1039/c5ra05695k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review summarize both the recent developments in the organocatalysed use of acetaldehyde as a substrate in various organic transformations and its application in the synthesis of bioactive molecules.
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Affiliation(s)
- Manjeet Kumar
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
| | - Arvind Kumar
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
| | | | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
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Song T, Zheng LS, Ye F, Deng WH, Wei YL, Jiang KZ, Xu LW. Modular Synthesis of Ar-BINMOL-Phos for Catalytic Asymmetric Alkynylation of Aromatic Aldehydes with Unexpected Reversal of Enantioselectivity. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301128] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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