4.8 Article

Cyclobutadiene Metal Complexes: A New Class of Highly Selective Catalysts. An Application to Direct Reductive Amination

Journal

ACS CATALYSIS
Volume 6, Issue 3, Pages 2043-2046

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acscatal.5b02916

Keywords

rhodium; cyclobutadiene; reductive amination; homogeneous catalysis; chemoselectivity; amines

Funding

  1. Russian Foundation for Basic Research [15-03-02548A]
  2. Council of the President of the Russian Federation [MK-6137.2015.3, MK-6254.2016.3]

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A catalyst of a new type, cyclobutadiene complex [(C4Et4)Rh(p-xylene)]PF6, was found to promote selective reductive amination in the presence of carbon monoxide under mild conditions (1-3 bar, 90 degrees C). The reaction demonstrated perfect compatibility with a wide range of functional groups prone to reduction by conventional reducing agents. The developed system represents the first systematic investigation of cyclobutadiene metal complexes as catalysts.

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