Ruthenium complex based on [N,N,O] tridentate -2-ferrocenyl-2-thiazoline ligand for catalytic transfer hydrogenation

J Badillo-Gómez (1, 2) , E Sánchez-Rodríguez (1) , R Toscano (1) , Maryse Gouygou (2) , M Ortega-Alfaro (1) , J López-Cortés (1)

1 UNAM - Universidad Nacional Autónoma de México = National Autonomous University of Mexico
2 LCC - Laboratoire de chimie de coordination

A method for the synthesis of a new phosphine-free [N,N,O]-tridentate Schiff base ligand L1 using the 2-Ferrocenyl-2-thiazoline as scaffold was developed. The 1,2-disubstituted ferrocene-based ligand was assembled using as key strategy the directed ortho-metalation (DoM) in 2-ferrocenyl-2-thiazoline. L1 was successfully obtained in 83% of overall yield after two-step synthesis. The coordination ability of L1 towards Ru(II) was evidenced and the resulting complex was characterized by IR, UV-vis and EPR. Its catalytic performance was tested in transfer hydrogenation of a variety of substrates giving moderate to excellent conversions.

Mots clés: Ferrocenyl ligands; Thiazoline; Schiff base; Ruthenium; Transfer hydrogenation; Ketones

Domaines: Chimie de coordination

J Badillo-Gómez, E Sánchez-Rodríguez, R Toscano, Maryse Gouygou, M Ortega-Alfaro, et al.. Ruthenium complex based on [N,N,O] tridentate -2-ferrocenyl-2-thiazoline ligand for catalytic transfer hydrogenation. Journal of Organometallic Chemistry, 2021, 932, pp.121630. ⟨10.1016/j.jorganchem.2020.121630⟩. ⟨hal-03108979⟩