title: N-carboxy-L-aspartic anhydride benzyl ester.
abstract: The structure of the title compound, benzyl (1,2,3,4-tetrahydro-2,5-dioxo-1,3-oxazol-4-yl)acetate, C(12)H(11)NO(5), has been determined in an attempt to explain the polymerization observed in the solid state. The molecules are linked by intermolecular hydrogen bonds between the imino group of the five-membered ring and an adjacent carbonyl O atom, along the c axis. Intramolecular hydrogen bonds are also formed, between the imino group and the carbonyl O atom of the ester group. The five-membered rings are arranged in a layer, sandwiched by layers incorporating the benzyl groups. This structure is thought to be preferable for the polymerization of the compound in the solid state, because the five-membered rings can react with each other in the layer.
authors.affiliation: Department of Education, Fukushima University, 1 Kanayagawa, Fukushima 960-1296, Japan. kanazawa@educ.fukushima-u.ac.jp
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Kanazawa
authors.forename: Jun
authors.initials: J
authors.lastname: Magoshi
mesh_terms: D001224:Aspartic Acid / Q000031:analogs & derivatives / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004952:Esters / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular
chemical_list: D004952:Esters; C474839:N-carboxy-aspartic anhydride benzyl ester; D001224:Aspartic Acid