Tris(pyrazolyl)borate rhodium complexes. Application for reductive amination and esterification of aldehydes in the presence of carbon monoxide

Kharitonov, Vladimir B.; Ostrovskii, V. S.; Nelyubina, Yulia V.; Muratov, Dmitry V.; Chusov, Denis; Loginov, Dmitry A.

doi:10.1016/j.jorganchem.2020.121468

Cited by 8 publications

(1 citation statement)

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“…[46,47] Hydrotris (3,5-dimethylpyrazolyl)borate is widely used in the design of functional molecules, catalysis, liquid crystal materials, electronic devices and biomimetic chemistry. [48][49][50] A number of oxovanadium complexes with nitrogen, sulphur and oxygen donor moieties have been prepared and their biological activities have been examined such as antitumor, [51] antibacterial, [52] anti-inflammatory, [53] antioxidant, [54][55][56] anticancer [57][58][59][60][61] activities. Oxidovanadium (IV) complexes of 4,5-dichlorobenzene-1,2-diamine and salicylaldehyde derivatives have been reported as potential DPP-IV enzyme inhibitors.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterisation and biological activities of mixed ligand oxovanadium (IV) complexes derived from N,N‐diethyl‐N′‐para‐substituted‐benzoylthiourea and hydrotris(3,5‐dimethylpyrazolyl)borate

Al‐abbasi

Tahir

Kayed

et al. 2022

Applied Organom Chemis

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A series of oxovanadium (IV) complexes namely, [Tp*VOL1], [Tp*VOL2], [Tp*VOL3], [Tp*VOL4] and [Tp*VOL5] (where Tp = hydrotris(3,5‐dimethylpyrazolyl)borate, HL1 = 1‐benzoyl‐3,3‐diethylthiourea, HL2 = 1‐(4‐chlorobenzoyl)‐3,3‐diethylthiourea, HL3 = 1,1‐diethyl‐3‐(4‐methoxybenzoyl)thiourea, HL4 = 1,1‐diethyl‐3‐(4‐nitrobenzoyl)thiourea, HL5 = N‐(diethylcarbamothioyl)biphenyl‐4‐carboxamide) were prepared and characterised on the basis of mass spectrometry, elemental analysis and spectroscopy techniques (IR, UV–Vis and electron paramagnetic resonance, EPR) and mass spectrometry. The crystal structure of [Tp*VOL3] was elucidated from single crystal X‐ray diffraction study and the crystals adopted a triclinic system with a P‐1 (Z = 2) space group and unit cell parameters of a = 10.4953(4), b = 11.5290(5) and c = 15.0656(7) Å. The cyclic voltammetry showed a reversible oxidation of V (IV)/V(V) at about 0.50 V (vs Fc+/Fc). The HOMO and LUMO of benzoylthiourea were established by theoretical calculation based on DFT level using B3LYP method and a double numeric plus polarisation (DNP) basis set. The in vitro tests for antimicrobial activity showed that the complexes have a moderate inhibitory effect. The complex [Tp*VOL1] exhibited cytotoxic activity against the human hepatocellular carcinoma cell line (HepG2) at the concentration of 20 mg ml−1. However, no cytotoxic activity was observed against the Chang liver cells.

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