title: Spiro-[cyclo-pentane-1,2'(1'H)-pyrido[2,3-d]pyrimidin]-4'(3'H)-one.
abstract: The title compound, C(11)H(13)N(2)O, was obtained by cyclo-condensation of 2-amino-pyridine-3-carbonitrile with cyclo-penta-none. The mol-ecule is built up from two fused six-membered rings and one five-membered ring linked through a spiro C atom. Both the pyrimidine and the cyclo-pentane rings adopt envelope conformations. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds.
authors: School of Chemical Engineering and environment, Beijing Institue of Technology, Beijing 100081, People's Republic of China.
authors: Daxin
authors: D
authors: Shi
authors: Liupan
authors: L
authors: Yang
authors: Jianhong
authors: J
authors: Tang
authors: Xiuzhen
authors: X
authors: Wang
authors: Jiarong
authors: J
authors: Li
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