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Fluorinated Bis(enyl) Ligands by Metal‐Induced Dimerization of Fluorinated Allenes
Author(s) -
Lentz Dieter,
Willemsen Stefan
Publication year - 2001
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 - 10.1002/1521-3773(20010601)40:11<2087::aid-anie2087>3.0.co;2-8
Subject(s) - allene , chemistry , methylene , metal , manganese , cobalt , medicinal chemistry , polymer chemistry , fluoride , stereochemistry , photochemistry , catalysis , organic chemistry , inorganic chemistry
Cobalt and manganese complexes provide access to novel fluoroallyl ligands: Fluorinated bis(enyl) ligands can be easily synthesized by metal‐induced dimerization of 1,1‐difluoroallene and tetrafluoroallene. By using octacarbonyldicobalt the coupling reaction occurs at the central carbon atom of the allene leading to the formation of fluorinated μ ‐( η 3 : η 3 ‐2,3‐dimethylenebuta‐1,4‐diyl) ligands such as those in complex 1 . Additional products arise from fluoride abstraction and CO insertion reactions. Decacarbonyldimanganese reacts with 1,1‐difluoroallene under C−C coupling of the methylene group to give decacarbonyl‐ μ ‐( η 1 : η 1 ‐1,1,6,6‐tetrafluoro‐1,5‐hexadiene‐2,5‐diyl)dimanganese.