title: Diethyl indolizine-1,3-dicarboxyl-ate.
abstract: The title compound, C(14)H(15)NO(4), was prepared by a 1,3-dipolar cyclo-addition from N-(eth-oxy-carbonyl-methy)pyridinium bromide and ethyl acrylate. The -CO(2) side chains form dihedral angles of 0.2 (3) and 2.4 (3)° with respect to the ring system. In the crystal, two neighbouring mol-ecules form a dimer through weak C-H⋯O interactions. The dimers form a three-dimensional structure via further weak C-H⋯O inter-actions.
authors.affiliation: Department of Applied Chemistry, Nanjing Normal University, Nanjing 210097, People's Republic of China.
authors.forename: Wei-Jin
authors.initials: WJ
authors.lastname: Gu
authors.forename: Jin
authors.initials: J
authors.lastname: Zhuang
authors.forename: Yu-Liang
authors.initials: YL
authors.lastname: Jiang
authors.forename: Bing-Xiang
authors.initials: BX
authors.lastname: Wang