RSC Advances p. 3655 - 3665 (2021)
Update date:2022-08-26
Topics:
Gorginpour, Forough
Zali-Boeini, Hassan
Rudbari, Hadi Amiri
A novel porous organic polymer (denoted by Q-POP) was successfully fabricated by free-radical copolymerization of allyl-substituted 2,3-di(2-hydroxyphenyl)1,2-dihydroquinoxaline, and divinylbenzene under solvothermal conditions and used as a new platform for immobilization of copper nanoparticles. The CuNPs@Q-POP nanocatalyst was prepared via incorporating of Cu(NO3)2 into the polymeric network, followed by the reduction of Cu2+ ion with hydrazine hydrate. The obtained materials were characterized through FT-IR, XRD, N2 adsorption-desorption isotherms, ICP, TGA, SEM, HR-TEM, EDX, and the single-crystal X-ray crystallography. The results displayed that Q-POP and CuNPs@Q-POP possessed high surface area, hierarchical porosity, and excellent thermal and chemical stability. The as-synthesized catalyst was utilized for the Ullmann C-N coupling reaction of aromatic amines and different aryl halides to prepare various diarylamine derivatives. All types of aryl halides (except aryl fluorides) were screened in the Ullmann C-N coupling reaction with aromatic amines to produce diaryl amines in good to excellent yields (50-98%), and it turned out that aryl iodides have the best results. Besides, due to the strong interactions between CuNPs, N, and O-atoms of quinoxaline moiety existing in the polymeric framework, the copper leaching from the support was not observed. Furthermore, the catalyst was recycled and reused for five consecutive runs without significant activity loss.
View MoreContact:+0086-21-61984905-1
Address:Building 60,Zimian Park, LongYang industrial Area, 1515Nong,Yuandong Road Fengxian District, Shanghai ,China
Luojiang Chenming Biological Products Co
Contact:+86 15000297032
Address:GROUP NO.4, HE SHENG VILLAGE, PANLONG TOWN,
Shanghai Hongbang Medical Technology CO.,. Ltd
Contact:13671516988 /18917636693
Address:Room1, No67 Building, Yongde Road369, Wujing Town, Minhang Districy, Shanghai CIty, China.
Zhejiang Golden-Shell Pharmaceutical Co.,Ltd.
Contact:+86-576-87501888 / 87501988
Address:No.89 Zhongxing Road. Li'ao, Yuhuan, Zhejiang, China
Xi'an North Information Industry Co., Ltd. Weilv Chemical Department
Contact:+86-29-88156413
Address:Jixiang Road 99 Xi'an Shaanxi Province
Doi:10.1021/acs.orglett.5b02756
(2015)Doi:10.1039/F29858101675
()Doi:10.3390/molecules26030642
(2021)Doi:10.1007/s003390000605
(1932)Doi:10.1021/op9000803
(2009)Doi:10.1055/s-1995-4013
(1995)