14547-83-2Relevant articles and documents
A dual chemosensor for Cu2+and Fe3+based on π-extend tetrathiafulvalene derivative
Ma, Yuwen,Leng, Taohua,Qu, Yarong,Wang, Chengyun,Shen, Yongjia,Zhu, Weihong
, p. 14 - 20 (2017)
A new dual chemosensor (TTF-PBA) for Fe3+and Cu2+in different signal pathways was designed and synthesized. The absorption spectrum, fluorescence spectrum and cyclic voltammograms changed in the presence of Cu2+and Fe3+. The optical color changed within 5?s from yellow to orange upon the addition of Cu2+, and it changed to dark yellow when Fe3+existed. The cyclic voltammogram of Cu2+/TTF-PBA changed from Eox?=?0.50?V, Ered?=?0.32?V to Eox?=?0.64?V, Ered?=?0.80?V (vs Ag/AgCl) upon the addition of 2.0 equiv. Cu2+. As for Fe3+/TTF-PBA, its oxidation wave disappeared, and its reduction wave appeared at Ered?=??0.59?V (vs Ag/AgCl) upon the addition of 4.0 equv. Fe3+. The sensor displayed high selectivity for Cu2+and Fe3+over other ions including Pb2+, Zn2+, Ni2+, Ag+, Cr3+, Mn2+, Al3+, Co2+, Pd2+, Hg2+, Fe2+Cd2+, Ce3+, Bi3+and Au3+, the detection limits for Cu2+and Fe3+ion reached as low as 5.33?×?10?7?mol/L and 5.34?×?10?7?mol/L, respectively. Furthermore, when Fe3+existed, Cu2+can be detected sequentially by the sensor through the absorption spectrum and the color change observed by naked-eyes.
Co2(CO)8as a Solid CO (g) Source for the Amino Carbonylation of (Hetero)aryl Halides with Highly Deactivated (Hetero)arylamines
Cheruku, Srinivas,Sajith, Ayyiliath M.,Narayana, Yatheesh,Shetty, Poornima,Nagarakere, Sandhya C.,Sagar, Kunigal S,Manikyanally, Kumara N.,Rangappa, Kanchugarkoppal Subbegowda,Mantelingu, Kempegowda
, p. 5530 - 5537 (2021/05/07)
Carbonylation of (hetero)aryl iodides/bromides with highly deactivated 2-aminopyridines using Pd-Co(CO)4 bimetallic catalysis is accomplished. The use of Co2(CO)8 as a solid CO(g) source enhanced reaction rates observed when compared to CO(g), and excellent yields highlight the versatility of the developed protocol. A wide range of electronically and sterically demanding heterocyclic amines and (hetero)aryl iodides/bromides employed for this study resulted in excellent yields of amino carbonylated products. The developed methodology was further extended to synthesize Trypanosome brucie and luciferase inhibitors.
Copper(I)-catalysed aerobic oxidative selective cleavage of C[sbnd]C bond with DMAP: Facile access to N-substituted benzamides
Ma, Haojie,Lu, Guoqiang,Han, Bo,Huang, Guosheng,Zhang, Yuqi,Wang, Ji-Jiang
supporting information, (2021/06/15)
A base/DMAP system for efficient oxidative cleavage of C(CO)–C(alkyl) bond to generate N-substituted benzamides has been developed in the presence of copper(I) chloride. The usage of inexpensive copper catalyst, broad substrate scope, mild conditions make