Yang Z.-K.
Xu N.-X.
Takita R.
Muranaka A.
Wang C.
*
Uchiyama M.
* The University of Tokyo, Japan
Cross-Coupling Polycondensation via C–O or C–N Bond Cleavage.
Nat. Commun. 2018;
9: 1587
Key words
magnesium - nickel catalysis - cross-coupling
Significance
The authors describe a cross-coupling polycondensation of Grignard reagents and various
aromatic ethers or ammoniums salts to form π-conjugated polymers with high molecular
weight through C–O or C–N bond cleavage. The reaction proceeds under mild conditions
in the presence of commercially available Ni or Pd catalysts.
Comment
Interestingly, the optimized reaction conditions showed that the quality and purity
of the organometallic compound critically influenced the yield and reactivity of this
polycondensation. In the presence of mono-Grignard reagents, the chain-growth was terminated and the molecular weight was reduced.
