Pyridine derivatives R 0380 DOI: 10.1002/chin.201637117 Improved Synthesis of Electron Deficient Bipyridines. — The use of stoichiometric 37- 117 Ni(II) significantly improves yields over those previously reported for the preparation of two CF3-substituted electron deficient bipyridine ligands. The stoichiometry of Zn uses in these Ullmann couplings is impactful as excess Zn can lead to undesired reduction of the CF3 group. — (LI, H.; OPPENHEIMER, J.; SMITH, M. R. I.; MALECZKA*, R. E. J.; Tetrahedron Lett. 57 (2016) 21, 2231-2232, http://dx.doi.org/10.1016/j.tetlet.2016.04.023 ; Dep. Chem., Mich. State Univ., East Lansing, MI 48824, USA; Eng.) — C. Inoue
ChemInform 2016, 47, issue 37
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