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“Giant” Gyroscope‐Like Molecules Consisting of Dipolar Cl‐Rh‐CO Rotators Encased in Three‐Spoke Stators That Define 25–27‐Membered Macrocycles
Author(s) -
Wang Leyong,
Hampel Frank,
Gladysz John A.
Publication year - 2006
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.200601191
Subject(s) - aryl , arc (geometry) , rotation (mathematics) , chemistry , dipole , crystallography , stereochemistry , physics , computer science , organic chemistry , engineering , mechanical engineering , alkyl , artificial intelligence
Yet another feat for the Grubbs catalyst : Reactions with 1 a , b followed by hydrogenations give 2 a , b . The sizeable cavities of 2 , which were characterized crystallographically, allow for rapid Cl‐Rh‐CO rotation in solution. Reactions with ArCCLi give ArCC–Rh–CO species; when the aryl group is sufficiently large, it is confined between two macrocycles, blocking rotation.