title: (RS/SR)-2-Oxo-4-phenyl-azetidin-3-yl acetate.
abstract: In the title compound, C(11)H(11)NO(3), a modified synthetic acetate derivative, the four memebered β-lactam ring is roughly planar, with a maximum deviation of 0.21 (3) Å, and makes a dihedral angle of 81.46 (14)° with the phenyl ring. In the crystal, a single N-H⋯O hydrogen bond links mol-ecules into a chain parallel to the a axis and thus stabilizes the structure. Although the absolute configuration could not be reliably determined, the compound corresponds to the diasteroisomer (RS/SR).
authors.affiliation: School of Information and Communication Engineering, North University of China, Taiyuan 030051, People's Republic of China.
authors.forename: Yangjun
authors.initials: Y
authors.lastname: Li