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JOURNALS // Mendeleev Communications // Archive

Mendeleev Commun., 2024 Volume 34, Issue 1, Pages 57–60 (Mi mendc42)

This article is cited in 2 papers

Communications

Tetrahydrofluorenyl rhodium complexes: positive impact of p-methoxybenzyl substituent on catalytic annulation reactions

V. B. Kharitonova, Yu. V. Nelyubinaa, D. V. Muratova, D. A. Loginovab

a A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russian Federation
b G.V. Plekhanov Russian University of Economics, Moscow, Russian Federation

Abstract: Rhodium complex based on 9-(p-methoxybenzyl)-1,2,3,4-tetrahydrofluorenyl ligand was found to be an efficient catalyst for various C–H annulation reactions such as couplings of benzoic acids with alkynes, pivaloyl hydroxamate with alkenes, or the tandem reaction of p-anisaldehyde and p-toluidine with tolane. The catalyst demonstrated higher catalytic performance than the unsubstituted analog due to the stabilization of the rhodium–tetrahydrofluorenyl bond. Tetrahydrofluorenyl rhodium complexes also effectively catalyzed the synthesis of tetramethyl thiophene-2,3,4,5- tetracarboxylate from elemental sulfur and dimethyl acetylenedicarboxylate.

Keywords: alkynes, C–H annulation, indenyl ligand, rhodium complexes, homogeneous catalysis.

Language: English

DOI: 10.1016/j.mencom.2024.01.017



© Steklov Math. Inst. of RAS, 2025