Fe3O4@SiO2/collagen: An efficient magnetic nanocatalyst for the synthesis of benzimidazole and benzothiazole derivatives
作者:Hossein Ghafuri、Elahe Esmaili、Majid Talebi
DOI:10.1016/j.crci.2016.05.003
日期:2016.8
Résumé In this project, Fe3O4@SiO2 was synthesized and combined with collagen for the preparation of Fe3O4@SiO2/collagen. It was characterized by FT-IR, 1H NMR, VSM, XRD, EDX, SEM and TEM. This nanocatalyst has some interesting advantages such as facile synthetic procedure, high catalytic activity, easy separation and acceptable reusability. It was applied as an efficient nanocatalyst in the synthesis of benzimidazole and benzothiazole derivatives. This method offers several advantages including high yields, short reaction times, easy workup process and environmentally benign reaction conditions.
Palladium catalyzed ortho-halogenation of 2-arylbenzothiazole and 2,3-diarylquinoxaline
作者:Sourav Kumar Santra、Arghya Banerjee、Nilufa Khatun、Asim Samanta、Bhisma K. Patel
DOI:10.1039/c4ra15461d
日期:——
A Pd-catalysed mono and di-o-halogenation strategy has been demonstrated selectively using benzothiazoles and quinoxalines as the directing substrates.
使用苯并噻唑和喹啉作为定向底物,已经演示了一种Pd催化的单一和双卤代策略。
Synthesis and structural characterization of palladium pincer complexes: Sustainable synthesis of benzothiazoles
(ADC) method has been described. The newly synthesized ligand L2 and the Pd(II) complexes in addition to L1 and L3 were characterized by analytical and Fourier transform infrared spectroscopy (FT-IR), UV–visible (UV–vis), and nuclear magnetic resonance (NMR) spectral techniques. Further, the ORTEP views of the complexes 2 and 3 were established by a single crystal XRD study, which evidenced the coordination
Zhong; Zhang; Chen, Journal of the Indian Chemical Society, 2001, vol. 78, # 6, p. 316 - 318
作者:Zhong、Zhang、Chen
DOI:——
日期:——
Peroxide-Free Pd(II)-Catalyzed Ortho Aroylation and Ortho Halogenation of Directing Arenes
作者:Sourav Kumar Santra、Arghya Banerjee、Prakash Ranjan Mohanta、Bhisma K. Patel
DOI:10.1021/acs.joc.6b01170
日期:2016.7.15
A Pd(II)-catalyzed peroxide-free ortho aroylation of directing arenes has been developed via cross dehydrogenative coupling (CDC) in the presence of the terminal oxidant Cu(OAc)2·H2O. Ortho aroylation of directing arenes proceeds via decarbonylation of the in situ generated phenyl glyoxal, which is obtained from 2-acetoxyacetophenone in the presence of the oxidant Cu(OAc)2·H2O. However, changing the