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A Route to Pd o from Pd II Metallacycles in Animation and Cross‐Coupling Chemistry
Author(s) -
Louie Janis,
Hartwig John F.
Publication year - 1996
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199623591
Subject(s) - metallacycle , palladium , catalysis , chemistry , reductive elimination , coupling reaction , amine gas treating , medicinal chemistry , coupling (piping) , photochemistry , stereochemistry , crystallography , organic chemistry , physics , materials science , x ray crystallography , diffraction , optics , metallurgy
Pd II /Pd IV or Pd II /Pd 0 ? The unusual Pd II catalyst 1 was reduced to a Pd 0 complex by reaction with an amine and a base. β‐Hydrogen elimination and subsequent CH bond‐forming reductive elmination generate a coordinated tris( o ‐tolyl)phosphane. The same palladium( II ) metallacycle was reduced to Pd 0 in a cross‐coupling reaction by CC bond‐forming reductive elimination to form coordinated P( o Tol) 2 ‐(C 6 H 4 CH 2 Ar). Thus, these compounds can react by a Pd II /Pd 0 ‐containing catalytic cycle.
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