96-53-7Relevant articles and documents
An environmentally benign and efficient synthesis of substituted benzothiazole-2-thiols, benzoxazole-2-thiols, and benzimidazoline-2-thiones in water
Liu, Xing,Liu, Min,Xu, Wan,Zeng, Meng-Tian,Zhu, Hui,Chang, Cai-Zhu,Dong, Zhi-Bing
, p. 5591 - 5598 (2017/12/06)
An efficient and practical method for the one-step synthesis of benzothiazole-2-thiols, benzoxazole-2-thiols and benzimidazoline-2-thiones by cyclization of 2-aminothiophenols, 2-aminophenols, and 1,2-phenylenediamines with tetramethylthiuram disulfide (TMTD) in water was described. The features of this method include metal/ligand-free, excellent yield, short reaction time and broad substrate scope. The method provides a facile and convenient preparation of some potentially biologically active compounds.
Hexadentate terephthalamide(bis-hydroxypyridinone) ligands for uranyl chelation: Structural and thermodynamic consequences of ligand variation (1)
Szigethy, Geza,Raymond, Kenneth N.
supporting information; experimental part, p. 7942 - 7956 (2011/07/06)
Several linear, hexa- and tetradentate ligands incorporating a combination of 2,3-dihydroxy-terephthalamide (TAM) and hydroxypyridinone-amide (HOPO) moieties have been developed as uranyl chelating agents. Crystallographic analysis of several {UO2[TAM(HOPO)2]}2- complexes revealed a variable and crowded coordination geometry about the uranyl center. The TAM moiety dominates the bonding in hexadenate complexes, with linker rigidity dictating the equality of equatorial U-O bonding. Hexadentate TAM(HOPO)2 ligands demonstrated slow binding kinetics with uranyl affinities on average 6 orders of magnitude greater than those of similarly linked bis-HOPO ligands. Study of tetradentate TAM(HOPO) ligands revealed that the high uranyl affinity stems primarily from the presence of the TAM moiety and only marginally from increased ligand denticity. Uranyl affinities of TAM(HOPO)2 ligands were within experimental error, with TAM(o-phen-1,2-HOPO)2 exhibiting the most consistent uranyl affinity at variable pH.
The reduction of specific disulfides with titanium(III) chloride
Akers, Hugh A.,Vang, Meng C.,Updike, Tracie D.
, p. 1364 - 1366 (2007/10/02)
The reaction between titanium(III) chloride and disulfides was investigated.Aryl and alkyl disulfides did not react while heterocyclic aromatic disulfides with a nitrogen α to the sulfur were reduced to the corresponding thiols.Products were identified and characterized by nuclear magnetic resonance and inrared spectra; and melting point comparisons with authentic compounds.The reductions occurred only in the presence of citrate and were found to require 2 moles of titanium(III) per mole of disulfide.