One‐Step Construction of Five Successive Rings by Rhodium‐Catalyzed Intermolecular Double [2+2+2] Cycloaddition: Enantioenriched [9]Helicene‐Like Molecules | Zendy

Tanaka Ken | Zendy; Fukawa Naohiro | Zendy; Suda Takeshi | Zendy; Noguchi Keiichi | Zendy

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One‐Step Construction of Five Successive Rings by Rhodium‐Catalyzed Intermolecular Double [2+2+2] Cycloaddition: Enantioenriched [9]Helicene‐Like Molecules

Author(s) -

Tanaka Ken,

Fukawa Naohiro,

Suda Takeshi,

Noguchi Keiichi

Publication year - 2009

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200901962

Subject(s) - helicene , rhodium , intermolecular force , cycloaddition , molecule , chemistry , catalysis , crystal structure , diene , stereochemistry , crystallography , organic chemistry , natural rubber

Spiraling upwards : Enantioenriched fluorenone‐containing [9]helicene‐like molecules have been successfully synthesized through the formation of five successive rings by rhodium‐catalyzed intermolecular double [2+2+2] cycloadditions of 2‐naphthol‐linked tetraynes with dialkynylketones (see scheme; cod=cycloocta‐1,5‐diene). Their unique crystal structures and photophysical properties have also been determined.

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