152487-69-9Relevant articles and documents
Introduction of Molecular Building Blocks to Improve the Stability of Metal-Organic Frameworks for Efficient Mercury Removal
Jiang, Shu-Yi,He, Wen-Wen,Li, Shun-Li,Su, Zhong-Min,Lan, Ya-Qian
, p. 6118 - 6123 (2018)
With expanding human needs, many heavy metals were mined, smelted, processed, and manufactured for commercialization, which caused serious environmental pollutions. Currently, many adsorption materials are applied in the field of adsorption of heavy metals. Among them, the principle of many mercury adsorbents is based on the interaction between mercury and sulfur. Here, a S-containing metal-organic framework NENU-400 was synthesized for effective mercury extraction. Unfortunately, the skeleton of NENU-400 collapsed easily when exposed to the mercury liquid solution. To improve the stability, a synthetic strategy installing molecular building blocks (MBBs) into the channels was used. Modified by the MBBs, a more stable nanoporous framework was synthesized, which not only exhibits a high capacity of saturation mercury uptake but also shows high selectivity and efficient recyclability.
Design, synthesis and fluorescence behavior of novel chemosensor with a thieno[2,3-b] thiophene fluorophore
Cao, Jing,Yan, Wanghui,Huang, Yiling
, p. 101313 - 101317 (2016)
A novel fluorescent chemosensor, a thieno[2,3-b]thiophene derivative carrying two oxazoline groups (DTTO) was designed and synthesized, which was discovered to exhibit good selectivity to dichromate anions (Cr2O72-). We also found that if the oxazoline group was replaced with a chiral one, for example, (S)-DTTO acted as a chiral fluorescent chemosensor, which exhibited a distinguishing fluorescent response to the enantiomers of mandelic acid.
A highly selective fluorescence chemosensor for Pb(II) in neutral buffer aqueous solution
Cao, Jing,Deng, Hai Yan,Wang, Chen Hui,Xiao, Yao,Ren, Ming,Zhang, You Wei
, p. 777 - 781 (2011)
A 3,4-dimethylthieno[2,3-b]thiophene-based fluorogenic probe bearing benzo[d]-thiazole-2-thio unit (sodium 3,4-bis ((benzo[d]thiazol-2-ylthio)methyl) thieno [2, 3-b]thio-phene-2, 5-dicarboxylate) was developed as a novel fluorescent chemosensor with high selectivity towards Pb(II) over other cations tested. The new probe exhibited good water solubility and only sensed Pb(II) among metal ions examined in neutral 4-(2-hydroxyethyl)-1- piperazineethanesulfonic acid buffer solution. The selectivity and sensitivity of fluorogenic probe to Pb(II) were discussed on the basis of experimental results. Copyright
Synthesis of novel benzo-substituted macrocyclic ligands containing thienothiophene subunits
Mekky, Ahmed E. M.,Elwahy, Ahmed H. M.
, p. E34-E41 (2014)
A facile synthetic approach was adopted toward the synthesis of benzo-fused macrocyclic ligands with thienothiophene group incorporated into the ring system. Thus, treatment of bis(bromomethyl) compound 2 with the K salt of the appropriate bis(phenol)s 3a, 3b, 3c, 3d in boiling DMF led to the formation of the novel macrocyclic diamides 4a, 4b, 4c, 4d in 39-58% yield. Reaction of 2 with the potassium salt (obtained upon treatment of salicylaldehyde 5 with ethanolic potassium hydroxide) in refluxing DMF afforded the novel bis(aldehyde) 6 in 73% yield. Cyclocondensation of 6 with the appropriate bis(N-substituted) cyanoacetamide derivatives 7a and 7b afforded the target macrocycles 8a and 8b in 48 and 55% yields, respectively. Reaction of the bis(aldehyde) 6 with 1,3- and 1,4-diaminopropane 9a and 9b in refluxing ethanol under high-dilution conditions afforded the corresponding macrocyclic Schiff bases 10a and 10b in 41 and 37% yields, respectively. Cyclocondensation of 6 with 1,3-bis(4-amino-5- phenyl-3-ylsulfanylmethyl)propane (15) in glacial acetic acid under high-dilution conditions gave the macrocyclic Schiff base 14 in 46% yield. On the other hand, cyclocondensation of bis(aldehydes) 17 and 20 with 3,4-bis(4-amino-5-phenyl-3-ylsulfanylmethyl)thienothiophene 16 in refluxing acetic acid under high-dilution conditions afforded unexpectedly the novel condensed heteromacrocycles 18 and 21 in 33 and 28%, respectively. The novel bis(amine) 16 was obtained in 50% yield upon treatment of 2 with 4-amino-1,2,4-triazol-3-thione 11 in ethanol/water mixture containing potassium hydroxide.
A facile and convenient one-pot synthesis of polysubstituted thiophenes from 1,3-dicarbonyl compounds in water
Wang, Yan,Dong, Dewen,Yang, Yang,Huang, Jie,Ouyang, Yan,Liu, Qun
, p. 2724 - 2728 (2007)
A facile and convenient one-pot synthesis of polysubstituted thiophenes 2 and polysubstituted thieno[2,3-b]thiophenes 3 from 1,3-dicarbonyl compounds 1 has been achieved in high yields catalyzed by tetrabutylammonium bromide (TBAB) in the presence of Ksu
