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Weatherford-Pratt JT, Bloch JM, Smith JA, Ericson MN, Siela DJ, Ortiz MR, Shingler MH, Fong S, Laredo JA, Patel IU, McGraw M, Dickie DA, Harman WD. Tungsten-anisole complex provides 3,6-substituted cyclohexenes for highly diversified chemical libraries. SCIENCE ADVANCES 2024; 10:eadl0885. [PMID: 38363845 PMCID: PMC10871534 DOI: 10.1126/sciadv.adl0885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 01/17/2024] [Indexed: 02/18/2024]
Abstract
Medicinal chemists use vast combinatorial molecular libraries to develop leads for new pharmaceuticals. The syntheses of these compounds typically rely on coupling molecular fragments through atoms with planar (sp2) geometry. These so-called flat molecules often lack the protein binding site specificity needed to be an effective drug. Here, we demonstrate a coupling strategy in which a cyclohexene is used as a linker to connect two diverse molecular fragments while forming two new tetrahedral (sp3) stereocenters. These connections are made with the aid of a tungsten complex that activates anisole toward an unusual double protonation, followed by sequential nucleophilic additions. As a result, either cis- or trans-disubstituted cyclohexenes can be prepared with a range of chemical diversity unparalleled by other dearomatization methods.
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Affiliation(s)
| | - Jeremy M. Bloch
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
| | - Jacob A. Smith
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
| | - Megan N. Ericson
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
| | - Daniel J. Siela
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
| | - Mason R. Ortiz
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
| | - Mary H. Shingler
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
| | - Sarah Fong
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
| | - Jonathan A. Laredo
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
| | - Ishaan U. Patel
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
| | - Matt McGraw
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904 USA
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Okauchi T, Urakawa A, Tabuchi N, Arai M, Nakagawa T, Ichimura T, Shimooka H, Kitamura M. Pyrrole Formation via Reactivity of η 4-(Vinylketenimine)iron Complexes with Electron-Deficient Alkynes. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tatsuo Okauchi
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyushu 804-8550, Japan
| | - Akihiro Urakawa
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyushu 804-8550, Japan
| | - Nagomi Tabuchi
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyushu 804-8550, Japan
| | - Miten Arai
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyushu 804-8550, Japan
| | - Tomoya Nakagawa
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyushu 804-8550, Japan
| | - Taiga Ichimura
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyushu 804-8550, Japan
| | - Hirokazu Shimooka
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyushu 804-8550, Japan
| | - Mitsuru Kitamura
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata, Kitakyushu 804-8550, Japan
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Roy A, Bhat BA, Lepore SD. Carbon-Carbon Bond Formation Facilitated by π-Complexed Organometallic Auxiliaries: An Overview. LETT ORG CHEM 2019; 16:689-696. [PMID: 31316308 DOI: 10.2174/1570178616666181203141515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Organometallic moieties attached to substrates via π-complexation play an important role as auxiliaries. As described in the present review, η-linked auxiliaries have been employed to overcome numerous synthesis obstacles that continue to present significant challenges for catalyzed reactions. This has been particularly true in carbon-carbon bond forming reactions involving highly unsaturated systems such as arenes, dienes and allenes, which are emphasized here.
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Affiliation(s)
- Animesh Roy
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, and
| | - Bilal A Bhat
- Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Sanatnagar, Srinagar, India-190005
| | - Salvatore D Lepore
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, and
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Stephenson GR, Anson CE, Swinson GJ. Biphenyl-cis-diol chemistry to access enantiopure aryl-substituted organoiron complexes. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.088] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Stephenson GR, Balfe AM, Hughes DL, Kelsey RD. Decomplexation–nitroso Diels–Alder (NDA) approach to C,D-ring functionalisation for hippeastrine. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.09.118] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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