Alkynes as Linchpins for the Additive Annulation of Biphenyls: Convergent Construction of Functionalized Fused Helicenes
A new approach to fused helicenes is reported, where varied substituents are readily incorporated in the extended aromatic frame. From the alkynyl precursor, the final helical compounds are obtained under mild conditions in a two‐step process, in which the final C−C bond is formed via a photochemica...
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Published in | Angewandte Chemie International Edition Vol. 55; no. 39; pp. 12054 - 12058 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
WEINHEIM
Blackwell Publishing Ltd
19.09.2016
Wiley Wiley Subscription Services, Inc |
Edition | International ed. in English |
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Abstract | A new approach to fused helicenes is reported, where varied substituents are readily incorporated in the extended aromatic frame. From the alkynyl precursor, the final helical compounds are obtained under mild conditions in a two‐step process, in which the final C−C bond is formed via a photochemical cyclization/ dehydroiodination sequence. The distortion of the π‐system from planarity leads to unusual packing in the solid state. Computational analysis reveals that substituent incorporation perturbs geometries and electronic structures of these nonplanar aromatics.
A new approach to fused helicenes is reported, in which varied substituents are readily incorporated in the extended aromatic frame. From an alkynyl precursor, the final helical compounds are obtained in a two‐step process, in which the final C−C bond is photochemically forged by coupling cyclization and dehydroiodination. The distortion of the π‐system from planarity leads to unusual packing in the solid state. |
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AbstractList | A new approach to fused helicenes is reported, where varied substituents are readily incorporated in the extended aromatic frame. From the alkynyl precursor, the final helical compounds are obtained under mild conditions in a two-step process, in which the final C-C bond is formed via a photochemical cyclization/ dehydroiodination sequence. The distortion of the π-system from planarity leads to unusual packing in the solid state. Computational analysis reveals that substituent incorporation perturbs geometries and electronic structures of these nonplanar aromatics. A new approach to fused helicenes is reported, where varied substituents are readily incorporated in the extended aromatic frame. From the alkynyl precursor, the final helical compounds are obtained under mild conditions in a two-step process, in which the final C-C bond is formed via a photochemical cyclization/dehydroiodination sequence. The distortion of the p-system from planarity leads to unusual packing in the solid state. Computational analysis reveals that substituent incorporation perturbs geometries and electronic structures of these nonplanar aromatics. A new approach to fused helicenes is reported, where varied substituents are readily incorporated in the extended aromatic frame. From the alkynyl precursor, the final helical compounds are obtained under mild conditions in a two‐step process, in which the final C−C bond is formed via a photochemical cyclization/ dehydroiodination sequence. The distortion of the π‐system from planarity leads to unusual packing in the solid state. Computational analysis reveals that substituent incorporation perturbs geometries and electronic structures of these nonplanar aromatics. A new approach to fused helicenes is reported, where varied substituents are readily incorporated in the extended aromatic frame. From the alkynyl precursor, the final helical compounds are obtained under mild conditions in a two‐step process, in which the final C−C bond is formed via a photochemical cyclization/ dehydroiodination sequence. The distortion of the π‐system from planarity leads to unusual packing in the solid state. Computational analysis reveals that substituent incorporation perturbs geometries and electronic structures of these nonplanar aromatics. A new approach to fused helicenes is reported, in which varied substituents are readily incorporated in the extended aromatic frame. From an alkynyl precursor, the final helical compounds are obtained in a two‐step process, in which the final C−C bond is photochemically forged by coupling cyclization and dehydroiodination. The distortion of the π‐system from planarity leads to unusual packing in the solid state. |
Author | Shatruk, Michael Alabugin, Igor V. Albrecht-Schmitt, Thomas E. Mohamed, Rana K. Guerrera, Joseph V. Eaton, Teresa M. Mondal, Sayantan |
Author_xml | – sequence: 1 givenname: Rana K. surname: Mohamed fullname: Mohamed, Rana K. organization: Department of Chemistry and Biochemistry, Florida State University, FL, 32310, Tallahassee, USA – sequence: 2 givenname: Sayantan surname: Mondal fullname: Mondal, Sayantan organization: Department of Chemistry and Biochemistry, Florida State University, FL, 32310, Tallahassee, USA – sequence: 3 givenname: Joseph V. surname: Guerrera fullname: Guerrera, Joseph V. organization: Department of Chemistry and Biochemistry, Florida State University, FL, 32310, Tallahassee, USA – sequence: 4 givenname: Teresa M. surname: Eaton fullname: Eaton, Teresa M. organization: Department of Chemistry and Biochemistry, Florida State University, FL, 32310, Tallahassee, USA – sequence: 5 givenname: Thomas E. surname: Albrecht-Schmitt fullname: Albrecht-Schmitt, Thomas E. organization: Department of Chemistry and Biochemistry, Florida State University, FL, 32310, Tallahassee, USA – sequence: 6 givenname: Michael surname: Shatruk fullname: Shatruk, Michael organization: Department of Chemistry and Biochemistry, Florida State University, FL, 32310, Tallahassee, USA – sequence: 7 givenname: Igor V. surname: Alabugin fullname: Alabugin, Igor V. email: alabugin@chem.fsu.edu organization: Department of Chemistry and Biochemistry, Florida State University, FL, 32310, Tallahassee, USA |
BackLink | https://www.ncbi.nlm.nih.gov/pubmed/27535022$$D View this record in MEDLINE/PubMed |
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Keywords | ACETYLENES alkynes PHOTOCHEMICAL-SYNTHESIS photocyclodehydroiodination EQUIVALENTS ENYNE CYCLIZATIONS RADICAL CASCADES PHENANTHRENES helicenes COUPLING REACTION TRIPHENYLENE PHOTOCYCLIZATION CARBOHELICENES |
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PHOTOCHEMICAL SYNTHESIS OF PHENANTHRENES . SYNTHESIS OF ARISTOLOCHIC ACID AND RELATED COMPOUNDS publication-title: JOURNAL OF ORGANIC CHEMISTRY |
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Snippet | A new approach to fused helicenes is reported, where varied substituents are readily incorporated in the extended aromatic frame. From the alkynyl precursor,... |
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SubjectTerms | Alkynes Aromatic compounds Chemical reactions Chemistry Chemistry, Multidisciplinary Computer applications helicenes Photochemicals photocyclodehydroiodination Physical Sciences Science & Technology |
Title | Alkynes as Linchpins for the Additive Annulation of Biphenyls: Convergent Construction of Functionalized Fused Helicenes |
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