title: 2,5-Bis(4-methyl-phen-yl)-4-oxopenta-noic acid.
abstract: The title compound, C(19)H(20)O(3), was obtained from 1,4-bis-(4-methyl-phen-yl)but-3-yn-2-one in the presence of carbon monoxide by Ni(CN)(2) catalysis in a basic aqueous medium. Inter-molecular O-H⋯O hydrogen bonds lead to the formation of hydrogen-bonded carb-oxy-lic acid dimers [graph-set motif R(2) (2)(8)]. Weak C-H⋯O hydrogen bonds between neighbouring dimers further extend the structure to give rise to a three-dimensional supra-molecular network.
authors.affiliation: Zhongshan Polytechnic, Zhongshan, Guangdong 528404, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Zhuang
authors.forename: Yong
authors.initials: Y
authors.lastname: Hou