254902-66-4

Upstream product

• 164797-23-3 ((C₂H₅)3P)2Pd(Cl)(CH₂C₆H₄CF₃) 
• 119072-55-8 tert-butylisonitrile 
• 143293-23-6 {(Et3P)2palladium}(η2-CH2CHCO2CH3) 
• 939-99-1 4-trifluoromethylbenzyl chloride 
• 164797-23-3 Pd(Cl)(P(C₂H₅)3)2(CH₂C₆H₄CF₃) 

Relevant academic research and scientific papers

Imine-enamine tautomeric equilibrium of palladium imidoyl complexes

The reaction of benzylpalladium complexes of type trans-[Pd(CH2C6H4Y)(X)(PR3) 2] (2) with isocyanides yields imidoyl complexes that exist in solution as equilibrium mixtures of the corresponding imine ([Pd(C(=NR′)CH2C6H4Y)(X)(PR 3)2],. 3-im) and enamine ([Pd-(C(NHR′=CHC6H4Y)(X)(PR3) 2, 3-en) tautomers. While the equilibrium constant is markedly affected by the electronic effect exerted by the substituents at the phenyl ring (Y), the effect of the metal fragment is less pronounced and is dominated by steric factors. Both tautomeric forms can also be found in the solid state, and the X-ray structures of complexes of type 2, 3-im, and 3-en have been determined.

Observation of a non-H-bond-stabilized tautomeric imine-enamine equilibrium in iminoacyl-palladium complexes

Iminoacyl complexes of the type trans-Pd-(C(=NBut)(CH2C6H 4-p-X))Cl(PR3)2 exist in solution as equilibrium mixtures of their imine and enamine forms. The position of the equilibria can be tuned by varying the X substituent of the aryl ring and the phosphine ligands, allowing in some cases the isolation of compounds that exist as the less common enamine form, both in solution and in the solid state.