Acta Cryst. (2012). E68, o3252
[ doi:10.1107/S1600536812044261 ]

10'-Chloro-3',4'-dihydro-2'H-spiro[cyclopropane-1,7'(6'H)-pyrimido[2,1-a]isoquinolin]-6'-one

K. Okuda, T. Hirota, Y. Nishina and H. Ishida

Abstract: In the title compound, C₁₄H₁₃ClN₂O, the fused hydropyrimidine ring adopts an envelope conformation with one of the methylene C atoms at the flap. The three-membered ring is approximately perpendicular to the attached isoquinoline ring system, with a dihedral angle of 89.44 (11)°. In the crystal, molecules are linked by a weak C-H interaction, forming a helical chain along the c axis.

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