131276-28-3

Upstream product

• 21264-30-2 dichloro bis(acetonitrile) palladium(II) 
• 131276-25-0 1,8-bis-(diphenylphosphino)anthracene 
• 15617-18-2 bis(benzonitrile)palladium(II) dichloride 

Downstream Products

• 1129673-93-3 [PdClC₁₄H₇(CCO₂CH₃)2(P(C₆H₅)2)2] 

Relevant academic research and scientific papers

SYNTHESIS OF STABLE C-(sup3)-CARBOMETALATED TRANSITION METAL COMPLEXES

The present invention provides a novel process for preparing carbometalated transition metal complexes, by reacting a transition metal complex having at least one conjugated diene ligand, with a dienophile, in a Diels-Alder cycloaddition reaction. In a particular embodiment, the invention discloses turning anthracene-based 9-C(sp2)-metalated complexes into C(sp3)-metalated ones by organic synthesis involving the Diels-Alder reaction.

1,8-Bis(diphenylphosphino)anthracene and Metal Complexes

The title compound 4 was synthesized from dipotassium 1,8-anthracenedisulfonate (9) and potassium diphenylphosphide (Ph2PK).On reaction of 4 with nickel(II) chloride and bis(benzonitrile)palladium(II) chloride, cyclometallation of the C-H bond in anthracene 9-position led to the square-planar chelate complexes 11 and 13, respectively.In the case of the palladium complex 13, the cyanometallated structure was proved by X-ray structure analysis.Treatment with aqueous potassium cyanide did not remove nickel from 11, but converted 11 into 12 by substitution of chloride with cyanide, demonstrating the high stability of these cyclometallated chelate complexes.