Crystal structure of benzyl 3-oxo-2-oxa-5-aza-bicyclo-[2.2.1]heptane-5-carboxyl-ate.
The title compound, C13H13NO4 (also known as N-benzyl-oxycarbonyl-4-hy-droxy-l-proline lactone), crystallizes with two mol-ecules in the asymmetric unit. They have slightly different conformations: the fused ring systems almost overlap, but different C-O-C-C torsion angles for the central chains of -155.5 (2) and -178.6 (2)° lead to different twists for the terminal benzene ring. In the crystal, the mol-ecules are linked by C-H⋯O inter-actions, generating a three-dimensional network. The absolute structure was established based on an unchanging chiral centre in the synthesis.
Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 sensui-cho tobata-ku kitakyushu 804-8550, Japan.
Suvratha
S
Krishnamurthy
Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 sensui-cho tobata-ku kitakyushu 804-8550, Japan.
Venkataprasad
V
Jalli
Department of Biological Functions and Systems Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu 808-0196, Japan.
Tarun Chand
TC
Vagvala
Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 sensui-cho tobata-ku kitakyushu 804-8550, Japan.
Tetsuji
T
Moriguchi
Department of Applied Chemistry, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 sensui-cho tobata-ku kitakyushu 804-8550, Japan.
Akihiko
A
Tsuge
4-hy­droxy­proline; C—H⋯O inter­actions; crystal structure