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One-pot synthesis of a PCsp3P-type pincer complex via double C[sbnd]H palladation of a large chelate ring

Golbaghi, Golara, Castonguay, Annie ORCID: https://orcid.org/0000-0001-5705-6353 et Zargarian, Davit (2020). One-pot synthesis of a PCsp3P-type pincer complex via double C[sbnd]H palladation of a large chelate ring Polyhedron , vol. 180 , nº 114415. p. 1-5. DOI: 10.1016/j.poly.2020.114415.

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Résumé

The diphosphine proligand R2P(CH2)5PR2 (R = i-Pr) reacts with PdCl2 or Pd(PhCN)2Cl2 in CH2Cl2 to give the 2:2 adduct trans-{µ-kP,kP′-R2P(CH2)5PR2}2Pd2Cl4 (1) featuring a 16-atom chelate ring, along with other uncharacterized species. Treating 1 with AgOTf or heating it in the solid state gave the PCsp3P-type pincer complexes {kP,kC,kP-(R2P(CH2)2)2CH}PdX (X: OTf, 2; Cl, 2-Cl). Complex 2 was also prepared via a one-pot route by refluxing a mixture of the proligand, PdCl2, and AgOTf in toluene. Complexes 1 and 2 have been characterized by NMR spectroscopy, elemental analysis, mass spectrometry and single crystal X-ray analysis.

Type de document: Article
Mots-clés libres: Palladium complex; Pincer ligand; One-pot synthesis; C-H metallation
Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 20 juill. 2021 04:00
Dernière modification: 14 févr. 2022 20:51
URI: https://espace.inrs.ca/id/eprint/11590

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