title: The use of calcium carbide in one-pot synthesis of symmetric diaryl ethynes.
abstract: An efficient Pd-catalyzed copper and amine free coupling reaction of acetylene and aryl bromides was achieved with calcium carbide as an acetylene source, using inorganic base and easily prepared, air-stable aminophosphine ligand in common organic solvents, providing symmetric diaryl ethynes in one-pot with yields ranged from moderate to excellent.
authors.affiliation: College of Chemistry and Material Science, Wenzhou University, Mid. Xueyuan Rd, Wenzhou 325027, China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Zhang
authors.forename: Huayue
authors.initials: H
authors.lastname: Wu
authors.forename: Zhiqing
authors.initials: Z
authors.lastname: Liu
authors.forename: Ping
authors.initials: P
authors.lastname: Zhong
authors.forename: Lin
authors.initials: L
authors.lastname: Zhang
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Huang
authors.forename: Jiang
authors.initials: J
authors.lastname: Cheng