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Copper Nanoparticles on Ordered Mesoporous Carbon Nitride Support: a Superior Catalyst for Homo‐ and Cross‐Coupling of Terminal Alkynes under Base‐Free Conditions
Author(s) -
Xu Hang,
Wu Liangying,
Tian Jing,
Wang Jun,
Wang Peng,
Niu Xiyu,
Yao Xiaoquan
Publication year - 2019
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201901296
Subject(s) - catalysis , chemistry , mesoporous material , nanoparticle , copper , nanocomposite , base (topology) , carbon nitride , carbon fibers , mesoporous organosilica , heterogeneous catalysis , combinatorial chemistry , chemical engineering , polymer chemistry , organic chemistry , nanotechnology , mesoporous silica , materials science , composite material , mathematical analysis , mathematics , photocatalysis , engineering , composite number
A novel ordered mesoporous carbon nitride (OMCN) was synthesized as a functionalized support with 2,4,6‐trichloro‐1,3,5‐triazine and benzidine as starting materials in the presence of SBA‐15 as a template. Copper nanoparticles were then loaded on the C–N material to achieve a novel nanocomposite catalyst (Cu NPs‐OMCN). The nanocomposite was utilized as a highly efficient catalyst for homo‐ and cross‐coupling of terminal alkynes under base‐free conditions in ethanol, and various symmetrical and unsymmetrical 1,3‐diynes were obtained with good to excellent yields. Moreover, based on this reaction, a one‐pot approach to synthesize 2,5‐disubstituted thiophenes and furans from terminal alkynes were developed. Furthermore, the heterogeneous catalyst could be recovered and reused conveniently for several times with satisfactory yields.