1007-54-1Relevant articles and documents
Synthesis, silver (I) extraction and silver (I) binding studies of novel N 1,N 3-bis(2-(benzylthio)ethyl)propanediamide derivatives
Aderibigbe, Abiodun D.,Clark, Andrew J.
, p. 397 - 410 (2021)
Abstract: Solvent or liquid–liquid extraction represents a highly valuable technique for the selective recovery of metals from the aqueous phase due to the ease of operation and short turnaround times. Ligands bearing soft donor atoms including nitrogen and sulfur are ideal candidates for selective silver recovery due to their preference for silver binding. Herein, novel N1,N3-bis(2-(benzylthio)ethyl)propanediamide derivatives bearing sulfur and nitrogen donor atoms were prepared in low to high yields and tested for Ag+ extraction from ternary aqueous solutions also containing Cu2+ and Pb2+ following a well-established solvent extraction protocol. It was observed that electronics effects at the 4-aryl position in the propanediamide (or malondiamide) derivatives had a significant effect on the selectivity, but little effect on the efficiency of Ag+ extraction with the 4-methoxy analogue proving the most selective. Steric hindrance provided by dimethyl substitutions at the α-positions to the sulfur atoms had negative effects on Ag+ extraction efficiency and selectivity, while diethyl steric hindrance at the methylene center lowered selectivity but increased extraction efficiency for Ag+. Detailed binding studies reveal that one of the malondiamide derivatives which lacked the electronic and steric hindrance groups studied coordinated Ag+ in a 1:1 fashion suggesting a tetrahedral complex geometry. Overall, the results show that simple modification of the electronics and sterics of the N1,N3-bis(2-(benzylthio)ethyl)propanediamides, can improve their selectivity for Ag+ recovery from the aqueous phase. Graphic abstract: [Figure not available: see fulltext.].
Synthesis and structural characterization of a dinuclear copper(II) complex with a (N,S) donor ligand: Catecholase and phenoxazinone synthase activities
Mondal, Debalina,Ghosh, Ayon Kanti,Chatterjee, Arnab,Ghosh, Rajarshi
, p. 719 - 723 (2019)
[CuII2(L)2Cl4] (1) [L = 2-(benzylthio)ethanamine] has been synthesized and characterized using spectroscopic and X-ray crystallographic results. Structural analyses reveal bidentate chelation behaviour of the neutral L having a distorted square pyramidal coordination environment around each copper(II) with one L, one chloride and two bridging chloro. 1 behaves as an effective catalyst towards oxidation of 3,5-di-tert-butylcatechol to its corresponding quinone with molecular oxygen and also the coupling of o-aminophenol to its phenoxazinone chromophore in methanolic solutions with turnover numbers 2.18 × 102 h?1 (catecholase activity, MeOH), and 3.60 × 102 h?1 (phenoxazinone synthase activity, MeOH) and 2.36 × 102 h?1 (Phenoxazinone synthase activity, MeCN).
A Schiff base fluorescence probe for highly selective turn-on recognition of Zn2+
Zhu, Jinli,Zhang, Yuhuan,Chen, Yihan,Sun, Tongming,Tang, Yanfeng,Huang, Yang,Yang, Qingqing,Ma, Danyang,Wang, Yipu,Wang, Miao
, p. 365 - 370 (2017)
A simple Schiff base CTS, synthesized between 2-hydroxy-1-naphthaldehyde and 2-benzylthio-ethanamine, was found to be a good turn-on fluorescence probe for the detection of Zn2+, due to the restriction of the rotation of the bond between C[dbnd]N and naphthalene ring and/or the blocking of the photo-induced electron transfer (PET) mechanism of the nitrogen atom to naphthalene ring. Excellent selectivity for Zn2+was evidenced, over many other competing ions, including Fe3+, Cr3+, Ni2+, Co2+, Fe2+,Mn2+, Ca2+, Hg2+, Pb2+, Cu2+, Mg2+, Ba2+, Cd2+, Ag+, Li+, K+, and Na+, in EtOH/HEPES buffer (95:5, v/v, pH?=?7.4). It was noteworthy that Cd2+had no interference with Zn2+. The stoichiometric complex of CTS-Zn2+was determined to be 2:1 for CTS and Zn2+in molar, based on the Job plot and single crystal X-ray diffraction data. The binding constant of the complex was 85.7?M?2with a detection limit of 5.03?×?10?7?M. The fluorescence bio-imaging capability of CTS to detect Zn2+in live cells was also studied. These results indicated that CTS could serve as a favorable probe for Zn2+.
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Hope,D.P. et al.
, p. 270 - 273 (1970)
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Synthesis and biological activities of novel trifluoromethylpyridine amide derivatives containing sulfur moieties
Chen, S. H.,Dai, A. L.,Guo, S. X.,He, F.,Wu, J.,Zhang, R. F.
, p. 35658 - 35670 (2020/10/27)
A series of trifluoromethylpyridine amide derivatives containing sulfur moieties (thioether, sulfone and sulfoxide) was designed and synthesized. Their antibacterial activities against Xanthomonas oryzae pv. oryzae (Xoo), Ralstonia solanacearum (R. solana
