Ethyl (E)-3-hy-droxy-2-{N-[2-(thio-phen-2-yl)ethen-yl]carbamo-yl}but-2-enoate.
In the title compound, C(13)H(15)NO(4)S, there are two independent but conformationally similar mol-ecules in the asymmetric unit, both having an E conformation of the side-chain C=C group. Intra-molecular N-H⋯O and O-H⋯O hydrogen-bonding inter-actions are present in both molecules. In the crystal, one of the mol-ecule types is linked through inter-molecular hy-droxy-ketone O-H⋯O inter-actions, forming one-dimensional chains extending along [010], whereas the other mol-ecule type shows no associations.
College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620,  People's Republic of China.
Bao-Shuo
BS
Liu
Sheng-Yin
SY
Zhao